Alternative Fuels and Vehicles:
July 28, 2021
Legislative Proposals
Melissa N. Diaz
Congress continues to pursue broad goals of reducing petroleum-based fuel consumption and
Analyst in Energy Policy
greenhouse gas (GHG) emissions in road transportation. Legislative proposals in the 116th

Congress—several of which have been reintroduced in the 117th Congress—would have
promoted the deployment of alternative fuels (AFs) and alternative fuel motor vehicle (AFV)

technologies, including the categories of:
 biofuels for use in conventional or flexible-fuel vehicles;
 electricity and plug-in electric vehicles (PEVs; i.e., battery-electric and plug-in hybrid-electric vehicles);
 hydrogen and fuel cell vehicles (FCVs); and
 zero-emission vehicles (ZEVs; e.g., battery-electric vehicles and FCVs).
Federal legislation and regulation enacted since the 1970s established agency authorities, energy goals, and fuel economy and
emissions standards; defined alternative fuels and vehicles; and enacted federal programs. Major federal programs and
incentives include the Corporate Average Fuel Economy (CAFE) standards, production incentives under the Alternative
Motor Fuels Act and the Energy Policy Act of 2005, and tax credits for alternative fuel vehicles and new qualified plug-in
electric drive motor vehicles.
Several major barriers to the adoption of AFs and AFVs exist. These include certain differences between AFVs and
conventional internal combustion engine vehicles (ICEVs), such as the costs of purchase and ownership, as well as driving
range and convenience of refueling. Market forces, in particular the price of petroleum fuels, play a role in the adoption of
alternative fuels and vehicles, which substitute for ICEVs and the petroleum fuels that run them. Advanced technological
challenges also may arise around ensuring the safety of fuel delivery; providing repair and maintenance; and recycling and
disposing of consumed lubricating oils, other fluids, and other parts.
Bills Introduced in the 116th Congress by Incentive
Building on existing programs and addressing various
Type
barriers to adoption, AF and AFV legislation from the 116th
Congress identified by CRS generally falls into three
groups of categories (see figure; Figure 2 for full size).
Some of these policy options have been reintroduced in the
117th Congress or proposed by the Biden Administration,
including proposals that would promote the deployment of
AFVs through producer and buyer incentives, provide for
programs to expand the use of AFVs in buses and other
larger vehicles, and to promote the procurement of AFVs
for government fleets.

Source: CRS from Congress.gov.

Notes: RDD&D = Research, design, development, and
demonstration. Some bil s included provisions that would have
implemented more than one type of incentive and are counted
once for each incentive type that is applicable. Includes bil s that
were enacted and not enacted.
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Contacts
Author Information ........................................................................................................................ 20

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Introduction
Congress maintains a continuing interest in reducing petroleum-based fuel consumption and
greenhouse gas (GHG) emissions in transportation. In 2019, the transportation sector—mostly
motor vehicles—contributed 29% of total U.S. GHG emissions,1 using primarily petroleum-based
fuels, which made up 91% of total fuel consumption.2 To achieve petroleum consumption and
GHG emission reduction goals, Members of Congress introduced numerous legislative proposals
that would have promoted the deployment and use of alternative fuels (AFs)—such as biofuels,
hydrogen, and electricity—and alternative fuel motor vehicle (AFV) technology—such as flex-
fuel, fuel-cell, and electric vehicles (see “Alternative Fuels and Alternative Fuel Vehicles”). The
use of alternative fuels and vehicles has the potential to reduce the transportation sector’s overall
emissions of GHGs, particulate matter, and other air pollutants, by reducing the consumption of
petroleum fuels. The potential for any such reduction varies depending on the fuels and vehicles
that gain in widespread use compared to their conventional counterparts.3
Legislative proposals rely on various approaches to support different aspects of the transportation
sector. Some proposals offer tax incentives for the purchase of AFs or AFVs; offer grants or loans
for transition of fleets to AFVs; authorize funding for research, design, development, and
demonstration (RDD&D) to improve existing technologies and develop new technologies; and/or
establish national policies or standards for emissions or vehicle fleet composition. Some of these
proposals also seek to incentivize the use of AFs in different classes of vehicles, from light-duty
to medium- and heavy-duty.4 Some proposals would extend or expand previously established
programs or policies, while others propose new ones.
Some of these proposals were enacted during the 116th Congress, including provisions to extend
existing tax incentives, grant and loan programs, and research and development activities.5

1 Greenhouse gas (GHG) emissions include carbon dioxide, methane, nitrous oxide, hydrofluorocarbons,
perfluorocarbons, sulfur hexafluoride, and nitrogen trifluoride. U.S. Environmental Protection Agency (EPA),
Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2019, April 2021, Table 2-10, “U.S. Greenhouse Gas
Emissions Allocated to Economic Sectors.” When electricity-related emissions are included, the share of transportation
emissions remains at 29%. EPA, Inventory of Greenhouse Gas Emissions, Table 2-12, “U.S. Greenhouse Gas
Emissions by Economic Sector and Gas with Electricity-Related Emissions Distributed.”
2 Fuels include petroleum, natural gas, biomass (e.g., ethanol), and electricity (consisting of retail sales and electrical
system energy losses). Department of Energy (DOE), Energy Information Administration (EIA), Monthly Energy
Review, May 2021, Table 2.5, “Transportation Sector Energy Consumption.” Motor vehicles accounted for 77% of
total fuel consumption in 2020, including light-duty vehicles, medium- and heavy-duty vehicles, and commercial light
trucks, but not bus transportation (included in “other”). EIA, Annual Energy Outlook 2021 [chart library],
“Transportation Sector Consumption by Mode, AEO2021 Reference Case.”
3 Numerous proposals also would promote the installation and use of alternative fuel infrastructure, though such
proposals are beyond the scope of this report. For additional information on alternative fuel charging and fueling
stations programs and potential deployment issues, see CRS Report R42566, Alternative Fuel and Advanced Vehicle
Technology Incentives: A Summary of Federal Programs, by Lynn J. Cunningham et al., and CRS Report R45747,
Vehicle Electrification: Federal and State Issues Affecting Deployment, by Bill Canis, Corrie E. Clark, and Molly F.
Sherlock.
4 Light-duty vehicles include passenger cars, pickup trucks, sport utility vehicles (SUVs), and minivans. Medium-duty
vehicles include refrigerated trucks, school buses, and smaller transit buses. Heavy-duty vehicles include large transit
buses, tractor-trailer trucks, and construction vehicles. U.S. Department of Transportation (DOT), Field Operations
Guide for Safety/Service Patrols, “Figure 21. Law Enforcement Vehicle Identification Guide,” accessed May 26, 2021,
https://ops.fhwa.dot.gov/publications/fhwahop10014/s5.htm#f21.
5 For more on tax provisions that recently expired or are soon to expire, see CRS Report R46451, Energy Tax
Provisions Expiring in 2020, 2021, 2022, and 2023 (“Tax Extenders”), by Molly F. Sherlock, Margot L. Crandall-
Hollick, and Donald J. Marples.
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This report examines provisions within legislative proposals that would support the broader
deployment of alternative fuels and alternative fuel vehicles; a discussion of relevant enacted
legislation, including definitions of alternative fuels and vehicles found in statute; identification
of major barriers and obstacles to increasing deployment of AFs and AFVs; and an analysis of
legislation introduced in the 116th Congress.
Alternative Fuels and Alternative Fuel Vehicles
CRS identified legislation supporting alternative fuels as defined in the Energy Policy Act of
1992 (EPAct 1992; P.L. 102-486) and subsequent amendments; such fuels are “substantially not
petroleum and would yield substantial energy security benefits and substantial environmental
benefits.”6 Different policy approaches may be more effective in incentivizing particular types of
fuels or technologies. While the goal of AF policies is generally to reduce the use of petroleum
through substitution, many alternative fuels are derived in part from petroleum (e.g., fuel blends)
or may be produced through the combustion of fossil fuels (e.g., electricity and hydrogen
generated from coal or natural gas sources).
Figure 1. Bills Introduced in the 116th Congress by Technology Type
Number of bills that would have promoted each technology type

Source: CRS from Congress.gov.
Notes: Provisions were categorized based on the vehicle or fuel specifically referenced within the text of the
legislation. Some bil s included provisions that would have promoted more than one type of fuel or vehicle
technology and are counted once for each technology type that is applicable. Includes bil s that were enacted and
not enacted.
Figure 1 summarizes the number of bills introduced in the 116th Congress that would have
implemented policies promoting the different types of alternative fuel or vehicle technology. Ten
bills included provisions that would have promoted alternative fuels, 10 bills had provisions to
promote alternative fuel vehicles broadly, 16 bills included policies to promote zero-emission
vehicles (ZEVs) broadly, 26 bills included provisions with electric vehicle-specific policies and
programs, and 17 bills had provisions to promote fuel cell vehicles. Following are descriptions for
AF and AFV categories referenced in these bills.
Alternative Fuels and Alternative Fuel Vehicles. AFs and AFVs generally include all fuels and
vehicles described in this section. Statute and regulation also include coal-derived liquid fuels,
liquid fuel blends derived from renewable sources, and other fuels determined by the Department

6 42 U.S.C. §13211.
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of Energy to be “substantially not petroleum” (e.g., P-series fuels)7 and that would benefit the
general aims of energy security and environmental protection.8 Depending on the program, AFVs
may also include certain hybrid or dual-fuel vehicles not included in other categories, such as
hybrid-electric vehicles.9
Biofuels and Conventional or Flex-Fuel Vehicles. Ethanol, other alcohols, and biodiesel are
derived from biological materials and blended with petroleum-based fuels for use in conventional
or internal combustion engine vehicles (ICEVs). E10, a common form of ethanol in transportation
fuels, is a blend of 10% ethanol by volume with gasoline for use in light-duty ICEVs.10 In the
United States, ethanol is primarily derived from corn grain but may also be derived from other
sources such as sugar cane and wood chips.
E85 contains at least 85% ethanol by volume blended with gasoline or other fuels for use in flex-
fuel vehicles (FFV).11 FFVs have an internal combustion engine and offer the flexibility of using
any combination of gasoline and/or E85.
B100, or “neat biodiesel,” is 100% biodiesel, a liquid fuel manufactured from vegetable oils or
animal fats.12 B100 is then blended with conventional diesel for use in diesel engines, often at the
5% (B5) or 20% (B20) level.
Electricity and Plug-in Electric Vehicles. Electricity is generated from a variety of sources
depending on geographic location of power plants, time of day, and season. It is used to charge
batteries stored onboard light-, medium-, and heavy-duty plug-in electric-vehicles (PEVs),13
which may be dedicated (i.e., battery-electric vehicles) or hybrid (i.e., plug-in hybrid-electric
vehicles).14
Hydrogen and Fuel Cell Vehicles. Hydrogen is extracted from water and other sources (e.g.,
natural gas, coal, and biomass), commonly through the processes of steam reforming—a process
that combines steam and natural gas—or electrolysis—a process that splits water molecules into
hydrogen and oxygen.15 Hydrogen is then used to power fuel cell vehicles (FCVs), where
hydrogen stored in the vehicle is used to generate electricity for operating light-, medium-, and
heavy-duty vehicles.16

7 Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy (EERE), “Alternative Fuel
Transportation Program; P-Series Fuels,” 64 Federal Register 26822, 1999.
8 42 U.S.C. §13211(2).
9 A hybrid-electric vehicle, distinct from a plug-in hybrid-electric vehicle, has a battery that charges through a
regenerative charging process rather than via external electricity and requires gasoline to operate. DOE, Alternative
Fuels Data Center (AFDC), “Hybrid and Plug-In Electric Vehicles,” accessed May 26, 2021, https://afdc.energy.gov/
vehicles/electric.html.
10 AFDC, “Ethanol Fuel Basics,” accessed May 26, 2021, https://afdc.energy.gov/fuels/ethanol_fuel_basics.html.
11 AFDC, “Flexible Fuel Vehicles,” accessed May 26, 2021, https://afdc.energy.gov/vehicles/flexible_fuel.html.
12 Biodiesel was included as an alternative fuel by regulation. DOE, “Alternative Fuel Transportation Program,”
Federal Register 61, no. 51 (March 14, 1996): 10622, https://www.govinfo.gov/content/pkg/FR-1996-03-14/pdf/96-
5702.pdf. AFDC, “Biodiesel Fuel Basics,” accessed May 26, 2021, https://afdc.energy.gov/fuels/biodiesel_basics.html.
13 AFDC, “Emissions from Hybrid and Plug-In Electric Vehicles,” interactive figure, accessed May 26, 2021,
https://afdc.energy.gov/vehicles/electric_emissions.html.
14 AFDC, “Electricity,” accessed May 26, 2021, https://afdc.energy.gov/fuels/electricity.html.
15 AFDC, “Hydrogen,” https://afdc.energy.gov/fuels/hydrogen.html. Other processes also can be used to produce
hydrogen. For more information on hydrogen production and challenges around hydrogen as an energy source see CRS
Report R46436, Hydrogen in Electricity’s Future, by Richard J. Campbell.
16 Hydrogen may also be burned in an internal combustion engine, but for various reasons fuel cells are expected to be
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Natural Gas and Natural Gas Vehicles. Natural gas is extracted from geologic formations, and
is stored for use in transportation as compressed natural gas (CNG) or liquefied natural gas
(LNG).17 CNG, stored in a gaseous state, is suitable for use in light-, medium-, and heavy-duty
vehicles. LNG, cooled and stored as a liquid, is suitable for use in medium- and heavy-duty
vehicles. CNG and LNG vehicles may have a dedicated configuration or hybrid configuration for
use with both natural gas and conventional fuel.
Propane and Propane Vehicles. Propane, or liquefied petroleum gas (LPG), is a byproduct of
the production of natural gas or crude oil.18 LPG may be used in dedicated or dual-fuel vehicles
with light-, medium-, or heavy-duty applications.
Zero-Emission Vehicles. This term is used to describe vehicles that emit zero GHGs while being
operated. Typically, ZEVs include fuel cell vehicles and battery-electric vehicles, but may also
include any other vehicle that similarly emits zero GHGs from the vehicle.19
Statutory Foundation of Federal Policies for
Alternative Fuels and Vehicles
Federal legislation and regulation enacted since the 1970s form the foundation for AF and AFV
policies and programs. These laws and regulations established agency authorities, energy goals,
and efficiency and emissions standards; defined alternative fuels and vehicles; and enacted
federal programs.20
Fuel Economy and Emissions Standards
The Clean Air Act of 1970 (CAA; P.L. 91-604) established initial emissions standards for vehicles
and provided the initial authority for the U.S. Environmental Protection Agency (EPA) to regulate
emissions standards.21 The Energy Policy and Conservation Act (EPCA; P.L. 94-163), enacted in
1975, established Corporate Average Fuel Economy (CAFE) standards for new light-duty
vehicles (e.g., passenger vehicles and light trucks) and provided the initial authority for the
National Highway Traffic Safety Administration (NHTSA) within the Department of
Transportation (DOT) to regulate CAFE standards. Amendments to EPCA in the Energy
Independence and Security Act of 2007 (EISA; P.L. 110-140) established a schedule for

the preferred technology pathway for passenger vehicles. Until 2005, DOE funded R&D for onboard reforming of
hydrogen from petroleum products for fuel cell vehicles. A review panel determined that these technologies were
unable to meet previously established targets and recommended shifting focus to onboard hydrogen storage for fuel cell
vehicles and hydrogen infrastructure. DOE, On-Board Fuel Processing Go/No-Go Decision, DOE Decision Team
Committee Report, August 2004, https://www.energy.gov/sites/default/files/2018/02/f49/
fcto_2004_go_nogo_onboard_fuel_processing_fcv.pdf.
17 AFDC, “Natural Gas Fuel Basics,” accessed May 26, 2021, https://afdc.energy.gov/fuels/natural_gas.html.
18 EERE, Propane Basics, May 2016, https://afdc.energy.gov/files/u/publication/propane_basics.pdf.
19 There may be associated upstream emissions from the production of the fuel, particularly if the original energy
supply is a fossil fuel.
20 AFDC, “Key Federal Legislation,” accessed May 26, 2021, https://afdc.energy.gov/laws/key_legislation.
21 Ibid. Additional authorities for regulating vehicle emissions standards are provided by the Clean Air Act
Amendments of 1990 (P.L. 101-549).
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increasing fuel economy for motor vehicles, mandating at least 35 miles per gallon for model year
2020 compared to about 26.6 miles per gallon in model year 2007.22
Incentives for Manufacturers and Producers
In 1988, the Alternative Motor Fuels Act (P.L. 100-494) established an incentive for vehicle
manufacturers to meet CAFE standards by producing vehicles that could operate on alternative
fuels. At the time, these included ethanol, methanol, and natural gas, which were estimated to
produce less carbon dioxide than similar quantities of gasoline or diesel.23 Alternative fuels were
later defined in the Energy Policy Act of 1992 (EPAct 1992; P.L. 102-486), forming part of the
basis for defining alternative fuels used by subsequent laws, regulations, and programs. That law
also established AFV purchase requirements for federal, state, and certain private vehicle fleets.
The Energy Policy Act of 2005 (EPAct 2005; P.L. 109-58) established new programs and new
authorities to promote the production and use of alternative fuels and vehicles. For example, the
statute established the Renewable Fuel Standard, which mandated a certain volume of renewable
fuel (e.g., ethanol) be blended into transportation fuel nationwide.24 This mandate was expanded
in 2007 by EISA.
Three fuel-related incentives have been established to promote the production of certain biofuels
or renewable fuels for use as fuels or to produce fuel blends with gasoline or diesel. These tax
incentives have been extended in one- or two-year increments, in some cases retroactively.
EPAct 2005 included a tax credit for biodiesel and renewable diesel mixtures.25 The tax credit
may be claimed by producers or blenders for each gallon of biodiesel or renewable diesel used to
produce a biodiesel mixture. This tax credit has been extended through 2022.26
The Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users
(SAFETEA; P.L. 109-59) established tax credits for alternative fuels and alternative fuel
mixtures.27 The tax credit may be claimed by producers for each gallon of certain alternative fuels
used as a fuel or suppliers for each gallon of alternative fuels blended with gasoline or diesel for
use as a fuel. These tax credits were extended through December 31, 2021.28
The second generation biofuel producer credit29 is designed to spur production of second
generation biofuels—liquid fuels produced from renewable biological materials. The tax credit

22 The 2007 legislation was the last time Congress legislated CAFE standards; subsequent changes after 2010 were
regulatory. For more on fuel efficiency and greenhouse gas standards, see CRS Report R45204, Vehicle Fuel Economy
and Greenhouse Gas Standards: Frequently Asked Questions, by Richard K. Lattanzio, Linda Tsang, and Bill Canis,
and CRS In Focus IF10871, Vehicle Fuel Economy and Greenhouse Gas Standards, by Richard K. Lattanzio, Linda
Tsang, and Bill Canis.
23 102 Stat. 2441 Sec. 2. Methanol produced from natural gas or biomass was estimated to produce less carbon dioxide
than similar quantities of gasoline or diesel, or methanol produced from coal.
24 For more on the Renewable Fuel Standard see CRS Report R43325, The Renewable Fuel Standard (RFS): An
Overview, by Kelsi Bracmort and CRS Report R44045, The Renewable Fuel Standard (RFS): Waiver Authority and
Modification of Volumes, by Kelsi Bracmort.
25 26 U.S.C. §6426(c).
26 P.L. 116-94.
27 26 U.S.C. §6426(d) and 26 U.S.C. §6426(e).
28 P.L. 116-94.
29 26 U.S.C. §40(b)(6). AFDC, “Second Generation Biofuel Producer Tax Credit,” accessed May 26, 2021,
https://afdc.energy.gov/laws/10515.
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may be claimed by the producer for each gallon of fuel sold for specified uses. This tax credit was
extended through January 1, 2022.
The federal government also has implemented other policies to promote adoption of alternative
fuel technologies, which are periodically reauthorized by Congress. These include the EPA Diesel
Emissions Reduction program and private activity bonds issued by the Department of
Transportation.30
Incentives for Vehicle Purchasers
Tax incentives have been implemented to incentivize consumer purchases of certain AFVs.
Buyers of fuel cell vehicles (FCVs) may be eligible for a tax credit of up to $8,000 (26 U.S.C.
§30B), for FCVs purchased by December 31, 2021.31 Eligibility for FCVs originated with the tax
credit for alternative motor vehicles, enacted in 2005,32 along with advanced lean-burn
technology vehicles, hybrid vehicles, and other alternative fuel vehicles, with distinct limitations
for each vehicle type.33 Vehicles other than FCVs must have been purchased by December 31,
2010, in order to qualify for the tax credit. In addition, for hybrid vehicles and advanced lean-
burn technology vehicles, the credit was capped at 60,000 vehicles per manufacturer, after which
the credit phased out.34
Buyers of PEVs may be eligible for a tax credit up to $7,500 (26 U.S.C. §30D). The tax credit for
new qualified plug-in electric drive motor vehicles was enacted in 2008, designed as a short-term
subsidy to introduce consumers to new technology.35 The full credit is capped at 200,000 per
vehicle manufacturer, after which the credit is phased out.36 As of January 2020, Tesla and
General Motors surpassed this cap and the tax credit is not currently available for purchasers of
those vehicles.
Other Policies and Programs
The federal government also supports research, design, development, and demonstration projects
for alternative fuel technologies. Congress also has periodically reauthorized a number of funding
programs. These projects and programs are funded through the annual appropriations process.
One such program is the Department of Energy’s Clean Cities program, which supports local

30 CRS In Focus IF11331, The Diesel Emissions Reduction Act (DERA) Program, by Richard K. Lattanzio. DOT,
Federal Highway Administration (FHA), “Private Activity Bonds (PABs),” May 26, 2021, https://www.fhwa.dot.gov/
ipd/finance/tools_programs/federal_debt_financing/private_activity_bonds/.
31 P.L. 116-260.
32 Energy and Policy Act of 2005 (P.L. 109-58).
33 Generally, advanced lean burn vehicles have internal combustion engines that incorporate technology that “achieves
at least 125% of the 2002 model year city fuel economy.” Energy and Policy Act of 2005 (P.L. 109-58). Hybrid
vehicles may include hybrid-electric vehicles, but exclude vehicles that qualify for other tax credits such as plug-in
hybrid-electric vehicles.
34 The credit decreases by percentage over five calendar quarters after the credit is claimed on the 60,000th qualifying
vehicle.
35 The credit for PEVs was established by the Energy Improvement and Extension Act of 2008, enacted as Division B
of P.L. 110-343. As first enacted, the credit was to phase out once 250,000 credit-eligible vehicles were sold. The PEV
phase-out threshold was changed from a 250,000 vehicle limit to a 200,000 vehicle per manufacturer limit in the
American Recovery and Reinvestment Act of 2009 (P.L. 111-5).
36 The credit decreases by percentage over five calendar quarters after the 200,000th qualifying vehicle is purchased.
For more on the tax credit see CRS In Focus IF11017, The Plug-In Electric Vehicle Tax Credit, by Molly F. Sherlock.
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efforts to reduce petroleum use in transportation, including deployment of alternative fuels and
vehicles.37
For a full list of existing programs, see CRS Report R42566, Alternative Fuel and Advanced
Vehicle Technology Incentives: A Summary of Federal Programs, by Lynn J. Cunningham et al.
Discussion of Major Barriers to Adoption
New technologies typically face a number of barriers to industrial and consumer adoption. In the
United States, ICEVs and petroleum fuels benefit from a history as the dominant technology in
road transportation that has facilitated, among other things, familiarity among consumers and vast
infrastructure for production, distribution, and fueling. As a result, broad deployment and
adoption of alternative fuels and vehicles face an incumbent technology with a variety of
advantages. Some policymakers have sought to address the commercialization barriers faced by
AFs and AFVs through legislation and policy. Some of these efforts were undertaken in the 116th
Congress. The following sections describe some of these barriers.
Vehicle Cost
Vehicle cost comprises the upfront cost to purchase a new or used vehicle (to be paid at the point
of sale or via payment plan) and the costs of use and maintenance over its lifetime (e.g., refueling,
maintenance, periodic parts replacement). While a higher upfront cost for some AFVs may be
offset by lower fuel costs over the lifetime of the vehicle depending on the comparative price of
petroleum, higher upfront costs may impose a barrier to consumer acceptance. Due to existing
consumer tax credits that tend to target PEVs, greater focus on PEVs in proposed legislation, and
limited availability of FCVs nationwide, this section focuses more on PEVs.
In the case of new electric vehicle purchases, one study determined the price at which
respondents would consider purchasing an electric vehicle to be $35,765 in the United States (and
$36,000 on average globally).38 For comparison, the average price of a new car in the United
States was $25,826 in 2019,39 and many smaller new ICEVs retail for under $20,000. Tax
incentives can help overcome the higher upfront cost of AFVs by lowering the cost to consumers;
however, the benefit of such tax incentives may only be accessible to consumers with a tax
liability to apply the credit since it is not a refundable tax credit. For the 2018 tax year, 80% of
those claiming the tax credit for new qualified plug-in electric vehicles had an adjusted gross
income of $100,000 or more.40 Manufacturers may also increase prices when consumers receive
tax credits, such that the benefits of the tax credit are shared between the buyer and the seller.41

37 EERE, Clean Cities: Building Partnerships to Cut Petroleum Use in Transportation, DOE/G0-102020-5515, January
2021, https://afdc.energy.gov/files/u/publication/clean_cities_coalitions_overview.pdf.
38 Castrol, Accelerating the EVolution, 2020, p. 17, https://www.castrol.com/content/dam/castrol/master-site/en/global/
home/technology-and-innovation/electric-vehicle-adoption/accelerating_the_evolution_study.pdf.
39 Domestic price of passenger cars sold in the United States, not including vans, SUVs, or light trucks. Oak Ridge
National Lab (ORNL), Transportation Energy Data Book, “Table 11.13. Average Price of a New Car,” 38th ed., August
2020.
40 For comparison, taxpayers with an adjusted gross income of $100,000 or more made up 19% of all tax payers in
2018. Internal Revenue Service, SOI Tax States—Individual Statistical Tables by Size of Adjusted Gross Income, Table
3.3 “All Returns: Tax Liability, Tax Credits, and Tax Payments, by Size of Adjusted Gross Income, Tax Year 2018
(Filing Year 2019),” https://www.irs.gov/statistics/soi-tax-stats-individual-statistical-tables-by-size-of-adjusted-gross-
income.
41 Media reports suggest that Tesla reduced vehicle prices when the tax credit expired, suggesting that Tesla was able to
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Grants and loans for state and local fleet managers support fleet acquisition of AFVs, but some
federal programs are competitive and funding may be limited. Once purchased, the costs of use
and maintenance depend on individual driving patterns and local costs of fuel (e.g., liquid fuels,
electricity). Annual fuel cost data suggest that PEVs—ranging from $450 to $2,450 in annual fuel
costs—may be cheaper to own than gasoline vehicles—ranging from $700 to $4,900.42 Electric
vehicles may also require less maintenance due to fewer moving parts in the electric drivetrain
and fewer lubricants and other fuels.43
Vehicle Performance
Driving range between refueling stops and the convenience of refueling are additional consumer
concerns, especially with respect to PEVs,44 which typically have shorter driving ranges than
ICEVs.45 One survey reported that 60% of respondents made at least one driving trip longer than
200 miles without making stops, which may inform consumer expectations for AFVs.46 While
some RDD&D is focused on increasing driving ranges, some studies suggest that driving ranges
offered by PEVs are sufficient to meet the average daily driving needs of most consumers in the
United States.47
Fuel cell and flex-fuel vehicles have a refueling time comparable to ICEVs, which can take
several minutes to fill up an empty tank. Meanwhile, a PEV may take less than an hour or more
than 12 hours depending on the battery capacity and type of charging equipment.48

capture some of the benefit of the tax credit. See Jack Stewart, “Tesla’s $7,500 Tax Credit Goes Poof, but Buyers May
Benefit,” Wired, January 2, 2019, https://www.wired.com/story/tesla-tax-credit-price-cut/.
42 DOE and EPA, FuelEconomy.gov, Fuel Economy Guide: Model Year 2020, datafile, https://www.fueleconomy.gov/
feg/download.shtml.
43 AFDC, “Maintenance and Safety of Hybrid and Plug-In Electric Vehicles,” accessed May 26, 2021,
https://afdc.energy.gov/vehicles/electric_maintenance.html.
44 In a 2021 survey, 60% of respondents cited range as a top concern. OC&C Strategy Consultants (OC&C), Battery
Late Than Never, April 12, 2021, https://www.occstrategy.com/en/our-insights/our-insight/id/6276/battery-late-than-
never. In a 2019 survey, 51% of respondents cited longer driving ranges would increase their interest in PEVs.
Consumer Reports and Union of Concerned Scientists, Electric Vehicle Survey Findings and Methodology, July 2019,
https://advocacy.consumerreports.org/wp-content/uploads/2019/07/ConsumerReports-UnionofConcernedScientists-
2019-EV_Survey-7.17.19.pdf. According to a Volvo study, 58% of all respondents cited “running out of power” as a
top concern. The Drive, “Americans Cite Range Anxiety, Cost as Largest Barriers for New EV Purchases: Study,”
February 26, 2019, https://www.thedrive.com/news/26637/americans-cite-range-anxiety-cost-as-largest-barriers-for-
new-ev-purchases-study.
45 AFDC, “All-Electric Vehicles,” accessed May 26, 2021, https://afdc.energy.gov/vehicles/electric_basics_ev.html.
The median driving range for gasoline vehicles was 412 miles for model year 2016. EERE, “Fact #939: August 22,
2016 All-Electric Vehicle Ranges Can Exceed Those of Some Gasoline Vehicles,” https://www.energy.gov/eere/
vehicles/fact-939-august-22-2016-all-electric-vehicle-ranges-can-exceed-those-some-gasoline. The median driving
range for electric vehicles was 259 miles on a single charge for model year 2020. EERE, “FOTW #1167, January 4,
2021: Median Driving Range of All-Electric Vehicles Tops 250 Miles for Model Year 2020,” https://www.energy.gov/
eere/vehicles/articles/fotw-1167-january-4-2021-median-driving-range-all-electric-vehicles-tops-250.
46 OC&C, Battery Late Than Never.
47 As an example, based on 2017 data, a PEV with a driving range of 120 miles (e.g., Volkswagen e-Golf) was
sufficient to meet the average daily driving needs of 96% of U.S. drivers where 87% of U.S. drivers had an average
daily driving distance of less than 60 miles. The International Council on Clean Transportation, “Five Things You
Know About EVs That Aren’t Exactly True,” December 2, 2020, https://theicct.org/cards/stack/explaining-electric-
vehicles.
48 Level 1 charging through 120 volts of alternating current (AC) delivers 2 to 5 miles of driving range per hour, level 2
through 240 volts AC delivers 10 to 20 miles of range per hour, and direct current (DC) fast charging (i.e., level 3)
delivers 120 to 240 miles of range per hour. AFDC, “Developing Infrastructure to Charge Plug-In Electric Vehicles,”
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In addition to technology improvements, investment in expansion of existing AF refueling
infrastructure may address these concerns. Access to numerous reliable refueling stations may
mitigate some range anxiety and soften expectations that AFVs provide the same driving range
and refueling experience as ICEVs. A discussion of provisions regarding infrastructure falls
outside of the scope of this report.49
Other performance characteristics that may pose barriers to deployment and adoption of AFVs
include reliability and safety of vehicles, maintenance infrastructure compared to conventional
vehicles, and overall driving experience compared to conventional vehicles.50
Fuel Prices and Consumer Preferences
Historically, the price of oil has demonstrated a certain volatility, increasing and decreasing in
response to changes in global demand and supply, geopolitical events, and other worldwide
events, including the 2020 COVID-19 global pandemic.51 Studies and reports have documented
observations that changes in fuel prices are followed by changes in market shares for smaller
light-duty vehicles (i.e., passenger cars) versus larger light-duty vehicles (i.e., light trucks).
According to a report from the Congressional Budget Office, increases in gasoline prices have
been followed by decreased sales of light trucks and increased sales of passenger cars, which
generally have higher fuel economy;52 conversely, decreases in gasoline prices have been
followed by sales of each vehicle type returning to levels before price increases. This trend was
later observed in 2015, when a decrease in gasoline prices correlated with an increase in sales of
light trucks (e.g., SUVs) and a decrease in passenger car sales.53
It may follow that fuel prices play a role in the adoption of alternative fuels and vehicles, which
substitute for petroleum fuels; however, a 2020 analysis found that vehicle choices may be more
strongly associated with certain driver characteristics than with fuel efficiency or fuel prices,
particularly over the long term.54 EPA data shows that the production share of light trucks has

accessed May 26, 2021, https://afdc.energy.gov/fuels/electricity_infrastructure.html.
49 For additional information on PEV infrastructure see CRS Report R45747, Vehicle Electrification: Federal and State
Issues Affecting Deployment, by Bill Canis, Corrie E. Clark, and Molly F. Sherlock.
50 In a 2021 survey, 26% of respondents cited concerns over the reliability or the “risk of breaking down” of PEVs.
OC&C, Battery Late Than Never. In a 2019 survey, 20% of respondents cited concerns over “performance capability”
of PEVs, particularly the ability of PEVs to provide a “‘responsive’ driving experience.” The Drive, “Americans Cite
Range Anxiety.”
51 Global economic lockdowns pushed oil prices from approximately $60 per barrel at the beginning of 2020 down to
approximately $20 per barrel in April; oil prices approached $50 per barrel by the end of 2020. EIA, Petroleum and
Other Liquids, WTI Spot Prices, May 26, 2021, https://www.eia.gov/dnav/pet/pet_pri_spt_s1_m.htm. For more on oil
and gasoline prices, see CRS Insight IN11246, Low Oil Prices and U.S. Oil Producers: Policy Considerations, by
Phillip Brown and Michael Ratner, and CRS Insight IN11311, U.S. Gasoline Prices: No Driving, No Benefits to
Consumers, by Michael Ratner.
52 Light trucks includes pick-up trucks, minivans, and SUVs. Congressional Budget Office (CBO), “Gasoline Prices
and Vehicle Markets,” chap. 2 in Effects of Gasoline Prices on Driving Behavior and Vehicle Markets (Washington,
DC: U.S. Government Printing Office, 2008).
53 From January to August 2015, nearly 600,000 more light trucks (including SUVs) were sold compared to the same
period in 2014, and 168,000 fewer passenger cars were sold. Eric Morath, “Gas-Price Drop Takes Americans’ Interest
in Fuel Economy Down with It,” The Wall Street Journal, September 4, 2015, https://www.wsj.com/articles/BL-REB-
33972. Benjamin Leard, Virginia McConnell, and Yichen Zhou, “Fleet Vehicles and U.S. Fuel Economy: How Do Fuel
Prices Affect Vehicle Purchase Decisions for Big Buyers?” Resources, April 6, 2018.
54 Driver characteristics include driving patterns, age, and education. Arik Levinson and Lutz Sager, Who Values
Future Energy Savings? Evidence from American Drivers, National Bureau of Economic Research Working Paper
Series, December 2020, p. 37, https://www.nber.org/system/files/working_papers/w28219/w28219.pdf.
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increased to more than 50% for model year 2019 compared to approximately 25% for model year
1985.55 This overall trend is predicted to continue as consumer preferences change and
manufacturers adjust their vehicle lineups.56 Market-based policies may be used to promote
alternative fuels and vehicles, but precise outcomes may be difficult to predict.
Other Challenges
As the variety and number of alternative fuels and vehicles increases, challenges may arise
around ensuring the safety of fuel delivery, providing repair and maintenance, and recycling and
disposing of consumed lubricating oils, other fluids, and other parts. For example, batteries from
plug-in electric vehicles are costly and require valuable minerals to produce.57 Continued research
and development on batteries may yield additional options for reuse and recycling.58 Another
example concerns the safety and efficiency of hydrogen delivery.59 Hydrogen poses a potential
risk of pipeline deterioration, which may result in leakage during transportation.
Proposed Legislation in the 116th Congress
What follows is a discussion of legislation in 2019 and 2020. Each section summarizes bills
introduced in the 116th Congress that were identified as containing AF and AFV provisions.
Figure 2 summarizes the number of bills containing provisions that would have implemented
each incentive type. Overall, 15 bills would have implemented policies pertaining to tax
incentives or rebates for the purchase of an alternative fuel vehicle, while 12 bills would have
implemented policies pertaining to grant or loan programs for bus acquisition, and 11 bills would
have implemented policies supporting manufacturing incentives.

55 EPA, The 2020 EPA Automotive Trends Report, “Figure ES-2. Production Share and Fuel Economy by Vehicle
Type,” January 2021.
56 Tom Voelk, “Rise of SUVs: Leaving Cars in Their Dust, With No Signs of Slowing,” New York Times, March 21,
2020, https://www.nytimes.com/2020/05/21/business/suv-sales-best-sellers.html; Chester Dawson, “As Demand for
Small Cars Weakens, More Auto Makers Drop Them From U.S. Lineups,” Wall Street Journal, January 13, 2019,
https://www.wsj.com/articles/as-demand-for-small-cars-weakens-more-auto-makers-drop-them-from-u-s-lineups-
11547391601.
57 Further, some of those minerals are not available or produced in large quantities in the United States resulting in U.S.
reliance on foreign sources for these minerals. This might create a weakness in the U.S. automotive supply chain.
58 EERE, “Batteries,” accessed May 26, 2021, https://www.energy.gov/eere/vehicles/batteries.
59 For additional information, see CRS Report R46436, Hydrogen in Electricity’s Future, by Richard J. Campbell.
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Figure 2. Bills Introduced in the 116th Congress by Incentive Type
Number of bills with a provision promoting each type of incentive

Source: CRS from Congress.gov.
Notes: RDD&D = Research, design, development, and demonstration. Some bil s included provisions that would
have implemented more than one type of incentive and are counted once for each incentive type that is
applicable. Includes bil s that were enacted and not enacted.
Vehicle Acquisition
One type of policy tool proposed in legislation in the 116th Congress was a compensatory
incentive for the purchase and use of alternative fuels and vehicles. Tax incentives, rebates,
grants, and loans lower the costs for replacing or retrofitting ICEVs with alternative fuel vehicles.
These incentives targeted individual drivers, as well as state and local transit and school bus
operators.
A number of legislative actions supporting the purchase and use of alternative fuels and
alternative fuel vehicles were introduced in the 116th Congress. The Consolidated Appropriations
Act, 2021 (H.R. 133, P.L. 116-260) extended the alternative motor vehicle credit for the purchase
of fuel cell vehicles through December 31, 2021. Other introduced bills included a number of
vehicle acquisition provisions that would have amended existing tax incentives, expanded the
applicability for existing programs, or established entirely new programs. Table 1 includes key
provisions for vehicle acquisition included in legislation introduced in the 116th Congress, but
which were not enacted.
Table 1. Key Provisions for Vehicle Acquisition
Introduced and Not Enacted in the 116th Congress
Provision
Bills
Would have established a $4,500 voucher for the
American Cars, American Jobs Act of 2019 (H.R.
purchase/lease of a new PEV assembled in the United
2510/S. 683)
States, containing at least 45% content of U.S. or
Canadian origin
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Provision
Bills
Would have extended (by date) and/or expanded (by
Affordable American-made Automobile Act (H.R. 5393)
increasing or eliminating the phaseout threshold) the
Clean Energy For America Act (S. 1288)
tax credit for PEVs (varies by bil )
Clean Energy Innovation and Deployment Act of 2020
(H.R. 7516)
Driving America Forward Act (H.R. 2256/S. 1094)
Electric Credit Access Ready at Sales (CARS) Act of
2019 (H.R. 2042/S. 993)
GREEN Act of 2020 (H.R. 7330)
Moving Forward Act (H.R. 2)
Would have amended the tax credit for PEVs to
Affordable American-made Automobile Act (H.R. 5393)
increase the credit amount or allow transfer to a
financing entity
Would have amended the tax credit for PEVs to
Affordable American-made Automobile Act (H.R. 5393)
include previously-owned PEVs
Would have established a new tax credit for
Affordable EVs for Working Families Act of 2019 (H.R.
previously-owned PEVs
5161)
GREEN Act of 2020 (H.R. 7330)
Moving Forward Act (H.R. 2)
Would have extended the alternative motor vehicle
Clean Energy for America Act (S. 1288)
credit for FCVs (finite period or indefinitely)
Tax Extender and Disaster Relief Act of 2019 (S. 617)
Taxpayer Certainty and Disaster Tax Relief Act of 2019
(H.R. 3301)
To amend the Internal Revenue Code of 1986 to
permanently extend the qualified fuel cell motor
vehicles credit (H.R. 1929)
Would have established a tax credit for fuel-efficient
Efficient Vehicle Leadership Act of 2019 (H.R. 7862)
vehicles and a fee on “gas-guzzlers”
Would have reauthorized the Clean School Bus
Clean Commute for Kids Act of 2019 (H.R. 2906)
program; would amend the definition to include electric Leading Infrastructure for Tomorrow’s America Act
vehicles
(H.R. 2741)
Moving Forward Act (H.R. 2)
Would have increased the grant amounts for the Clean
Clean Commute for Kids Act of 2019 (H.R. 2906)
School Bus program
Leading Infrastructure for Tomorrow’s America Act
(H.R. 2741)
Would have established the Clean School Bus Grant
Clean School Bus Act of 2019 (H.R. 3973/S. 1750)
program to replace diesel buses with electric or fuel
cell buses
Would have amended formula grants for buses and bus
INVEST in America Act (H.R. 7095)
facilities and low- or no-emissions grants (ZEVs only)
Moving Forward Act (H.R. 2)
Would have established grants, loan guarantees, and
America’s Clean Future Fund Act (S. 4484)
other investment tools for electric, hydrogen, and
“clean” transportation programs and deployment (e.g.,
school buses)
Would have authorized loans for fixed bus route
Community Health and Clean Transit Act of 2019 (S.
operators to acquire electric or fuel cell buses
2403)
Community Health and Clean Transit Act of 2020 (H.R.
8447)
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Provision
Bills
Would have established grants for energy efficiency
Renew America’s Schools Act of 2019 (H.R. 3322/S.
improvements at public schools (e.g., purchase or lease
1890)
of zero-emission school buses and other operational
vehicles)
Would have formally authorized the Clean Cities
Leading Infrastructure for Tomorrow’s America Act
program for competitive awards for projects (e.g.,
(H.R. 2741)
purchase and use of alternative fuels and vehicles)
Moving Forward Act (H.R. 2)
Would have extended funding for grants for transit
Low or No Emission Bus Access Act of 2020 (S. 3373)
buses and bus facilities of low or no emissions
Would have established a National Climate Bank from
National Climate Bank Act (H.R. 5416)
which to provide low- and zero-interest loans for
schools, municipalities, and nonprofits to acquire ZEVs
Source: CRS from Congress.gov.
Notes: EVs = electric vehicles. FCVs = fuel cell vehicles. PEVs = plug-in electric vehicles, to include battery-
electric and plug-in hybrid-electric vehicles. ZEVs = zero-emission vehicles.
Rebates and Tax Incentives for Individual Taxpayers
Tax incentives for AFVs were included in many bills in the 116th Congress. Numerous Members
sought to expand the overall applicability of the tax credit for PEVs. Several Members proposed
legislation that would have expanded the tax credit to target certain taxpayers that otherwise may
not be receiving the full benefit. Another option would be to allow the credit to be transferred to a
financing entity, which would allow low- and moderate-income taxpayers to capture more of the
value of the credit for which they might not otherwise be eligible. Another proposal could expand
the credit to include previously-owned PEVs (or establish a new tax incentive specifically for
previously-owned PEVs) that could offer another option for lowering the cost of PEVs for more
taxpayers.
Beyond tax incentives, one provision would have established a voucher for the purchase or lease
of a new PEV. As a voucher, this incentive is independent of income and tax liability and would
have broad applicability.
Funding for Local Transportation
Legislation introduced in the 116th Congress included a number of grants and loans programs that
would have provided assistance to states and localities seeking to transition away from diesel fuel
for public transportation and school bus fleets. Members sought to amend the applicability of the
Clean School Bus program, which provides grants for replacing school buses, to add electricity
and remove ultra low-sulfur diesel as eligible fuel types.60 Other bills would have expanded
transit funding for alternative fuel buses, including zero-emission buses, and related
infrastructure. Some bills would have set a zero-emission requirement on new bus acquisitions.
Nationally, programs such as DOE’s Clean Cities program provide assistance at the local level for
states, local governments, and other public transportation operators working to adopt alternative
fuels. Clean Cities’ efforts have yielded results in increasing the number of alternative fuel

60 EPA, “Reducing Diesel Emissions from School Buses,” May 26, 2021, https://www.epa.gov/dera/reducing-diesel-
emissions-school-buses.
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vehicles and the number of vehicle miles traveled on alternative fuels.61 Legislation introduced in
the 116th Congress would have continued the efforts of Clean Cities and programs like it by
authorizing grant programs for statewide transportation electrification and by authorizing loans
for bus operators at the state and local level to acquire electric buses.
Vehicle Manufacturing and Fuel Production
A variety of incentives for manufacturers and fuel producers included in bills introduced in the
116th Congress would have supported alternative fuel adoption by promoting the supply of
alternative fuels and AFVs in order to meet demand or potentially induce demand. With the
passage of the Further Consolidated Appropriations Act, 2020 (P.L. 116-94) and the Consolidated
Appropriations Act, 2021 (P.L. 116-260), various tax incentives for producers of liquid fuels
(including the tax credit for biodiesel or renewable diesel mixtures, the tax credits for alternative
fuel and alternative fuel mixtures, and the second generation biofuel producer credit) were
extended to the end of either 2021 or 2022. Table 2 includes key provisions for vehicle
manufacturers and fuel producers included in legislation introduced in the 116th Congress, but
which were not enacted.
Table 2. Key Provisions for Vehicle Manufacturers and Fuel Producers
Introduced and Not Enacted in the 116th Congress
Provision
Bills
Would have established a Clean Fuel Production credit
Clean Energy for America Act (S. 1288)
for transportation fuels
Would have expanded private activity bonds to include
Affordable American-made Automobile Act (H.R. 5393)
electric vehicle manufacturing and battery
manufacturing facilities
Would have amended the Domestic Manufacturing
Moving Forward Act (H.R. 2)
Conversion Grant program to include PEVs
NO EXHAUST Act of 2020 (H.R. 5545)
USA Electrify Forward Act (H.R. 5558)
Would have amended the Advanced Technology
Advanced Technology Vehicles Manufacturing Program
Vehicles Manufacturing Incentive program to include
Reform Act (H.R. 5860)
heavy-duty vehicles that emit zero GHGs
Moving Forward Act (H.R. 2)
NO EXHAUST Act of 2020 (H.R. 5545)
USA Electrify Forward Act (H.R. 5558)
Would have established a tax credit for manufacturers
GREEN Act of 2020 (H.R. 7330)
of zero-emission heavy vehicles (e.g., plug-in electric
Green VAN Act of 2019 (H.R. 5162)
and fuel cell vehicles)
Moving Forward Act (H.R. 2)
Would have established a tax credit for manufacturers
Green Bus Tax Credit Act of 2019 (H.R. 5163)
of zero-emission buses (e.g., plug-in electric and fuel
cell buses)
Would have established a pilot program for grants for
FREEZER Trucks Act of 2019 (H.R. 5256)
electrification of diesel refrigerated vehicles
Moving Forward Act (H.R. 2)

61 “At the national level, [the Vehicle Technologies Office] develops partnerships and provides technical assistance and
analysis, information resources, and online tools and data. At the local level, [Clean Cities] coalitions leverage these
resources to create networks of local stakeholders and provide technical assistance to fleets implementing alternative
and renewable fuels, idle-reduction measures, fuel economy improvements, and emerging transportation technologies.”
EERE, “About Clean Cities,” accessed May 2021, https://cleancities.energy.gov/about/.
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Source: CRS from Congress.gov.
Notes: GHGs = greenhouse gases. PEVs = plug-in electric vehicles, to include battery-electric and plug-in
hybrid-electric vehicles.
A range of proposed and enacted measure also promoted vehicle manufacturing. The Advanced
Technology Vehicles Manufacturing Loan program also was reauthorized in P.L. 116-260.
Proposed legislation focused primarily on medium- and heavy-duty vehicles. Alternative fuel
medium- and heavy-duty vehicles are more challenging to design and produce than light-duty
vehicles due to their size, while also having higher associated manufacturing costs.62 Bills would
have focused on increasing the deployment of medium- and heavy-duty ZEVs (e.g., plug-in
electric and fuel cell). Some policy proposals would have amended existing grants and loans
programs to include or focus on PEVs. Other proposals would have established tax incentives for
manufacturers of zero-emission heavy vehicles.
National Policies and Research and Development
Proposals introduced in the 116th Congress also included a range of less direct policy options in
support of increased deployment of alternative fuels and vehicles. National standards and
requirements can serve as complements to tax incentives and other compensatory incentives.
Research, development, demonstration, and deployment projects have the potential to yield more
efficient manufacturing or deployment methods for existing technology, as well as facilitate the
development of new technology.
Table 3. Key Provisions for National Policies and Research and Development
Introduced and Not Enacted in the 116th Congress
Provision
Bills
Would have established a national zero-emission
Zero-Emission Vehicles Act of 2019 (H.R. 2764/S.
standard for light-duty vehicles (100% of sales by 2040
1487)
or earlier)
Zero-Emission Vehicles Act of 2020 (H.R. 8635/S.
4823)
Would have established a national strategic action plan
Moving Towards a Safe Climate Act (H.R. 6171)
to reduce GHG emissions, including a target not to
exceed 20% of 2005 emissions in transportation
Would have established a zero-emission requirement
Green Bus Act of 2019 (H.R. 2164)
for public buses purchased with FTA funds
Would have established requirements for federal fleet
Moving Forward Act (H.R. 2)
acquisitions for new light-duty vehicles (100% AFVs by
NO EXHAUST Act of 2020 (H.R. 5545)
2025) and new medium- and heavy-duty vehicles (50%
AFVs by 2050)
Would have required 100% ZEVs for new federal fleet
NO EXHAUST Act of 2020 (H.R. 5545)
light-duty vehicles by 2050
Would have required federal fleet acquisitions of new
Moving Forward Act (H.R. 2)
medium- and heavy-duty vehicles to be zero-emission,
whenever possible

62 “The upfront costs for electric trucks remain a primary barrier to investment in electric trucks … models indicate that
the total cost of ownership for an average electric truck can be lower than a diesel or natural gas equivalent with
adequate incentives.” Center for Climate and Energy Solutions, “Insights on Electric Trucks for Retailers and Trucking
Companies,” February 2020, p. 1, https://www.c2es.org/document/insights-on-electric-trucks-for-retailers-and-
trucking-companies/.
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Provision
Bills
Would have established federal fleet emissions
Moving Forward Act (H.R. 2)
reduction goals to achieve 100% reductions by 2050
NO EXHAUST Act of 2020 (H.R. 5545)
compared to 2015
Would have required federal fleet consumption of
Moving Forward Act (H.R. 2)
alternative fuel to reach 85% of annual total by 2050
Would have required 100% PEVs or ZEVs for the USPS
Moving Forward Act (H.R. 2)
fleet by 2040
Postal Vehicle Modernization Act (H.R. 7969)
Would have required DOD acquisitions for non-tactical To direct the Secretary of Defense to phase-in zero-
vehicles to be zero-emission and would establish a
emission non-tactical vehicles and reduce the
petroleum consumption goal (50% of 2005
petroleum consumption of the Department of Defense
consumption by 2030)
Federal fleet, and for other purposes (H.R. 6932)
Would have authorized RDD&D activities for vehicle
Flexible Grid Infrastructure Act of 2019 (S. 1740)
technologies (to reduce or eliminate petroleum use and Vehicle Innovation Act of 2019 (H.R. 2170/S. 1085)
emissions)
Would have authorized RDD&D activities for energy
BATTERY Act of 2020 (H.R. 8232)
storage (including batteries used in PEVs)
Reducing the Cost of Energy Storage Act of 2019 (S.
1741)
Would have established a fund to support certain
Climate Action Rebate Act of 2019 (H.R. 4051/S. 2284)
RDD&D activities for technologies that reduce or
eliminate GHG emissions, including FCVs and PEVs
Source: CRS from Congress.gov.
Notes: AFVs = alternative fuel vehicles. DOD = Department of Defense. DOE = Department of Energy. FCVs =
fuel cell vehicles. FTA = Federal Transit Administration. GHG = greenhouse gas. PEVs = plug-in electric vehicles,
to include battery-electric and plug-in hybrid-electric vehicles. RDD&D = research, design, development, and
demonstration. USPS = U.S. Postal Service. ZEVs = zero-emission vehicles.
Federal Fleet Requirements
These policies also include proposals that apply specifically to the federal fleet, consisting of
658,000 vehicles all across the country.63 As possibly the largest civilian fleet operator in the
country, the federal government can contribute to demand for existing technology, which may
result in benefits (e.g., larger scale production may reduce costs per vehicle) for smaller entities
and nonfederal consumers.64 The enactment of the CHARGE Act (P.L. 116-160) in 2020 requires
the General Services Administration to issue guidance establishing that agencies may use federal
government credit cards to charge federal PEVs at commercial stations, and the National Defense
Authorization Act for Fiscal Year 2021 (P.L. 116-283) authorized a pilot program for purchasing
AFVs in the Department of Defense. Other policies for federal fleets would have established
government-wide standards for vehicle acquisitions, alternative fuel consumption, and GHG
emissions.
National Standards and Requirements
Proposals for national requirements would have targeted emissions reductions and specifically
promoted ZEVs (e.g., PEVs and fuel cell vehicles), setting a long-term goal for tax incentives,

63 U.S. General Services Administration, Federal Fleet Report FY 2020, https://www.gsa.gov/policy-regulations/
policy/vehicle-management-policy/federal-fleet-report.
64 Government Fleet, “Federal vs. State and Local Fleets,” May 14, 2018, https://www.government-fleet.com/301786/
federal-vs-state-local-fleets.
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grants, loans, and other programs. A national standard requiring 100% ZEV sales by 2040 would
have established a need for an increase in the supply of ZEVs, complementing the tax incentives
and other funding programs that are designed to induce the demand for zero-emission and other
alternative fuel vehicles.
Research and Development
Research, design, development, and demonstration projects have the potential to yield scalable
benefits to deployment efforts for alternative fuels and vehicles. In the 116th Congress, the
Consolidated Appropriations Act, 2021 (P.L. 116-260) authorized broad sustainable transportation
research and development at DOE in the Offices of Hydrogen and Fuel Cell Technologies,
Vehicles Technologies, and Bioenergy Technologies. Other proposals would have authorized
RDD&D for projects designed to reduce petroleum use and emissions in transportation, and
RDD&D specifically for energy storage technology (e.g., PEV batteries). These proposals
indicate an interest in identifying solutions to certain challenges specific to transportation
electrification, while supporting innovation in transportation more broadly.
The outcomes from RDD&D have the potential to impact many aspects of alternative fuel
adoption. RDD&D can be used to discover cheaper materials and efficiencies in production that
may contribute to an overall decrease in manufacturing costs that can be reflected in the prices
available to consumers.
Policy Proposals in the 117th Congress
New and previously proposed policy options have been introduced by Congress and proposed by
the Biden Administration since the start of the 117th Congress.
Some bills from the 116th Congress have been reintroduced, including the Clean School Bus Act
of 2021 (H.R. 1344/S. 506), Electric CARS Act of 2021 (H.R. 1271/S. 395), GREEN Act of 2021
(H.R. 848), Postal Vehicle Modernization Act (H.R. 1636), and USA Electrify Forward Act (H.R.
1879).
The CLEAN Future Act (H.R. 1512), introduced in March 2021, and referred to the House
Committee on Energy and Commerce and other committees, would promote ZEVs through
authorization of a pilot program to electrify refrigerated vehicles, reauthorize the Clean School
Bus Program, formally authorize the Clean Cities program, and reauthorize the Diesel Emissions
Reduction program, among other provisions.65 Similar provisions are included in the LIFT
America Act (H.R. 1848).
In an executive order, President Biden called for a plan to facilitate procurement of ZEVs for
fleets at all levels of government with an emphasis on American- and union-made vehicle
manufacturing.66
The Biden Administration’s proposed American Jobs Plan would promote domestic production of
PEVs and batteries, offer consumer incentives for the purchase of PEVs, and offer grant and
incentive programs for the installation of 500,000 PEV chargers by 2030. The plan also commits

65 House Committee on Energy and Commerce, “E&C Leaders Introduce the CLEAN Future Act, Comprehensive
Legislation to Combat the Climate Crisis,” March 2, 2021, https://energycommerce.house.gov/newsroom/press-
releases/ec-leaders-introduce-the-clean-future-act-comprehensive-legislation-to.
66 Executive Order 14008, “Tackling the Climate Crisis at Home and Abroad,” 86 Federal Register 7619, January 27,
2021.
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to replacing 50,000 diesel transit vehicles, electrifying 20% of school buses, and electrifying the
federal fleet.67

67 The White House, “FACT SHEET: The American Jobs Plan,” press release, March 31, 2021,
https://www.whitehouse.gov/briefing-room/statements-releases/2021/03/31/fact-sheet-the-american-jobs-plan/.
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Appendix. Legislation Introduced in the 116th
Congress
The following table lists all bills cited throughout the report. Legislation is listed in alphabetical
order by bill name, with enacted legislation listed first.
Table A-1. Legislation Introduced in the 116th Congress
Bill Name (Bill Number)
Votes/Hearings
CHARGE Act (H.R. 8191/S. 2193)
Enacted 10/1/2020, P.L. 116-160
Consolidated Appropriations Act, 2021 (H.R. 133)
Enacted 12/27/2020, P.L. 116-260
Further Consolidated Appropriations Act, 2020 (H.R. 1865)
Enacted 12/20/2019, P.L. 116-94
National Defense Authorization Act FY2021 (H.R. 6395)
Enacted 12/20/2019, P.L. 116-283
Advanced Technology Vehicles Manufacturing Program Reform Act

(H.R. 5860)
Affordable American-made Automobile Act (H.R. 5393)

Affordable EVs for Working Families Act of 2019 (H.R. 5161)

American Cars, American Jobs Act of 2019 (H.R. 2510/S. 683)

America’s Clean Future Fund Act (S. 4484)

BATTERY Act of 2020 (H.R. 8232)

Clean Commute for Kids Act of 2019 (H.R. 2906)
Subcommittee markup, 1/9/2020
Clean Energy For America Act (S. 1288)

Clean Energy Innovation and Deployment Act of 2020 (H.R. 7516)

Clean School Bus Act of 2019 (H.R. 3973/S. 1750)

Climate Action Rebate Act of 2019 (H.R. 4051/S. 2284)

Community Health and Clean Transit Act of 2019 (S. 2403)

Community Health and Clean Transit Act of 2020 (H.R. 8447)

Driving America Forward Act (H.R. 2256/S. 1094)

Efficient Vehicle Leadership Act of 2019 (H.R. 7862)

Electric Credit Access Ready at Sale (CARS) Act of 2019 (H.R. 2042/S.

993)
Flexible Grid Infrastructure Act of 2019 (S. 1740)

FREEZER Trucks Act of 2019 (H.R. 5256)

GREEN Act of 2020 (H.R. 7330)

Green Bus Act of 2019 (H.R. 2164)

Green Bus Tax Credit Act of 2019 (H.R. 5163)

Green VAN Act of 2019 (H.R. 5162)

INVEST in America Act (H.R. 7095)

Leading Infrastructure for Tomorrow’s America Act (H.R. 2741)
Committee hearings, 5/22/2019
Low or No Emission Bus Access Act of 2020 (S. 3373)

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Alternative Fuels and Vehicles: Legislative Proposals

Bill Name (Bill Number)
Votes/Hearings
Moving Forward Act (H.R. 2)
Passed House on 7/31/2020, 217-197
Moving Towards a Safe Climate Act (H.R. 6171)

National Climate Bank Act (H.R. 5416)

NO EXHAUST Act of 2020 (H.R. 5545)
Subcommittee markup, 1/9/2020
Postal Vehicle Modernization Act (H.R. 7969)

Reducing the Cost of Energy Storage Act of 2019 (S. 1741)
Subcommittee hearings, 7/9/2019
Renew America’s Schools Act of 2019 (H.R. 3322/S. 1890)

Tax Extender and Disaster Relief Act of 2019 (S. 617)

Taxpayer Certainty and Disaster Tax Relief Act of 2019 (H.R. 3301)

To amend the Internal Revenue Code of 1986 to permanently extend

the qualified fuel cell motor vehicles credit (H.R. 1929)
To direct the Secretary of Defense to phase-in zero-emission non-

tactical vehicles and reduce the petroleum consumption of the
Department of Defense Federal fleet, and for other purposes (H.R.
6932)
USA Electrify Forward Act (H.R. 5558)

Vehicle Innovation Act of 2019 (H.R. 2170/S. 1085)

Zero-Emission Vehicles Act of 2019 (H.R. 2764/S. 1487)
(H.R. 2764/S. 1487) (H.R. 8635/S. 4823)
Zero-Emission Vehicles Act of 2020 (H.R. 8635/S. 4823)

Source: CRS from Congress.gov.
Notes: FCV = fuel cel vehicle. FTA = Federal Transit Administration. PEV = plug-in electric vehicle.

Author Information

Melissa N. Diaz

Analyst in Energy Policy

Congressional Research Service
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Alternative Fuels and Vehicles: Legislative Proposals

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