Electricity: Overview and Issues for Congress
Electricity: Overview and Issues for Congress
Updated February 14, 2025
Congressional Research Service
https://crsreports.congress.gov
R47521
Congressional Research Service
SUMMARY
Electricity: Overview and Issues for Congress
Electricity is of perennial interest to Congress, especially the policy issues of reliability, security, affordability, and greenhouse gas emissions.
The electricity sector is made of up three distinct, but interrelated systems. The generation system consists of power plants that generate electricity. The transmission system generally consists of high-voltage transmission lines that move power across long distances. The distribution system makes final delivery of electricity to most homes and businesses. These systems are owned and operated by utilities with different ownership structures under different regulatory regimes across the country. Most aspects of electricity are regulated at the state or local level. The Federal Energy Regulatory Commission (FERC) primarily regulates electricity sales for resale in interstate commerce, rates for transmission service across state lines, and the reliability of many parts of the generation and transmission systems.
Market forces, such as capital costs and fuel costs, are key determinants of the generation mix, the share of different energy sources used to generate electricity. The U.S. generation mix has been changing since the mid-2000s, resulting in a decreased use of coal and an increased use of natural gas, wind, and solar energy. This change has been driven largely by price declines for natural gas, wind turbines, and solar panels, though federal and state electricity policies and environmental regulations also affect the generation mix.
Multiple factors can potentially disrupt electricity supply, including weather events, cyberattacks, and physical attacks on electricity facilities. Aging infrastructure and the changing generation mix also pose potential reliability risks because of the operational challenges they present. FERC regulates reliability for much of the contiguous United States, though reliability for distribution systems (where most power outages occur) are largely outside of FERC’s jurisdiction. The various threats to electric reliability and security can be prepared for, and responded to, in multiple ways. Congress might consider oversight activities related to current electric reliability and security conditions or the current regulatory framework in place to address risks. Improving reliability and security often comes at a cost to consumers. If Congress were to determine that additional reliability and security investments are needed within the electricity sector, Congress might consider how to allocate these costs among electricity consumers, utility shareholders (in the case of private utility companies), and the federal budget.
Inflation-adjusted residential electricity prices were relatively stable in the 2010s, in large part due to the changing generation mix. In the last several years, however, rate increases in many states have exceeded the pace of inflation due in part to relatively high natural gas prices in 2022 and increasing costs for maintaining transmission and distribution systems. While affordability affects all electricity consumers, low-income households may be more vulnerable than others. Several federal programs (e.g., the Low Income Home Energy Assistance Program) aim to address affordability by providing financial assistance to consumers. Also, federal incentives exist for technologies that can lower electricity usage through efficiency upgrades, onsite solar generation, or other options. Many of these incentives were established by the Infrastructure Investment and Jobs Act (IIJA; P.L. 117-58) and the law commonly known as the Inflation Reduction Act (IRA; P.L. 117- 169). The Trump Administration directed agencies to pause disbursement of some funds from these laws in Executive Order (E.O.) 14154, “Unleashing American Energy,” potentially raising questions about the ability of these programs to address affordability concerns moving forward. Congress might consider oversight of existing federal programs related to electricity affordability, energy efficiency, and other options to reduce electricity bills. Congress might also consider modifications to existing programs to address topics of concern.
Greenhouse gas emissions associated with electricity generation have generally declined since the mid-2000s because of the changing generation mix. Reducing emissions further is an ongoing area of congressional interest. Congress passed many provisions aimed at reducing emissions in IIJA and IRA, and these are also under review by the Trump Administration pursuant to E.O. 14154 and other executive orders. Emissions reductions likely would have costs and benefits. Costs include those associated with building new power plants, retiring existing power plants before the end of their useful life, and building any necessary infrastructure (e.g., transmission lines). Benefits include reduced negative impacts of climate change and improved public health through reduced co-pollutants. Indirect costs and benefits include changes in employment in the electricity sector and its supply chain (e.g., fossil fuel production, solar panel manufacturing). Some in the 119th Congress are reportedly looking to reevaluate many IIJA and IRA programs, including those related to greenhouse gas emissions.
R47521
February 14, 2025
Ashley J. Lawson Acting Section Research Manager
Electricity: Overview and Issues for Congress
Congressional Research Service
Contents
Introduction to the Electricity Sector .............................................................................................. 1
Generation Mix ......................................................................................................................... 1 Ownership Structure and Regulation ........................................................................................ 3
Electricity Reliability and Security ................................................................................................. 6
Additional Resources ................................................................................................................ 8
Electricity Affordability ................................................................................................................... 8
Additional Resources ............................................................................................................... 11
Greenhouse Gas Reduction ............................................................................................................ 11
Additional Resources .............................................................................................................. 13
Figures
Figure 1. U.S. Electricity Generation by Energy Source, 2000-2023 ............................................. 2 Figure 2. Cumulative Utility-Scale Electric Generating Capacity Additions, 2024 ........................ 3
Figure 3. Simplified Schematic of Electric Power Sector Systems ................................................. 4
Figure 4. Regional Transmission Organizations and Independent System Operators ..................... 6
Figure 5. Average Annual U.S. Residential Retail Electricity Prices, 2000-2025 ........................... 9
Tables
Table 1. Average Annual Household Electricity Expenditures, 2020 ............................................ 10
Contacts
Author Information ........................................................................................................................ 13
Electricity: Overview and Issues for Congress
Congressional Research Service 1
lectricity is central to modern life and is of perennial interest to Congress. This report provides an introduction to the electricity sector and discusses three key policy areas: electric reliability and security, electricity affordability, and greenhouse gas reduction.1
Introduction to the Electricity Sector
Generation Mix
Electricity sector participants generally aim to produce and deliver electricity at the lowest possible cost, though public policy goals and environmental regulations are also important factors. As a result, the mix of fuels used to produce electricity is strongly influenced by capital and fuel costs.
The generation mix, the share of different energy sources used to generate electricity, is changing. Much of this change dates to the mid-2000s when development of U.S. shale gas reserves lowered U.S. natural gas prices by half (or more).2 Costs for wind turbines began falling at about the same time, due to technology innovation and increased global production. Largely as a result of these market changes, natural gas and wind grew in the U.S. electricity mix starting around 2010 (Figure 1). Prices for solar panels began declining a few years later for similar reasons as for wind turbines (i.e., technology innovation and increased global production capacity). The corresponding growth in generation from solar energy lagged growth in wind energy by a few years.
1 A brief discussion of these policy areas is available in CRS In Focus IF12288, Energy Transition: Affordability, Emissions, and Security, by Brent D. Yacobucci, Corrie E. Clark, and Ashley J. Lawson.
2 For a history of the U.S. natural gas industry, see CRS Report R45988, U.S. Natural Gas: Becoming Dominant, by Michael Ratner.
E
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Figure 1. U.S. Electricity Generation by Energy Source, 2000-2023
Source: U.S. Energy Information Administration (EIA), Monthly Energy Review, “Table 7.2a Electricity Net Generation: Total (All Sectors)” and “Table 10.6 Solar Electricity Net Generation,” November 2024. Notes: “Other” includes petroleum liquids, petroleum coke, pumped storage (which tends to be a negative value), blast furnace gas and other manufactured and waste gases derived from fossil fuels, non-biogenic municipal solid waste, batteries, hydrogen, purchased steam, sulfur, tire-derived fuel, and other miscellaneous energy sources. “Non-hydro Renewables” includes wood, black liquor, other wood waste, biogenic municipal solid waste, landfill gas, sludge waste, agricultural byproducts, other biomass, geothermal, solar thermal, solar photovoltaic, and wind. Beginning in 2014, EIA reported net generation from small-scale solar photovoltaic facilities that are also included in “Non-hydro Renewables.” Totals may not sum to 100% because of independent rounding.
Solar generation has now overtaken other energy sources (including wind and natural gas) as the most common option for new power plant construction (Figure 2). Batteries are another important energy source, due, in part, to their ability to balance solar generation. Balancing helps reduce operational challenges that can be caused by the variable nature of solar energy.3
3 For additional information on balancing, see CRS In Focus IF11257, Variable Renewable Energy: An Introduction, by Ashley J. Lawson, and CRS Report R45764, Maintaining Electric Reliability with Wind and Solar Sources: Background and Issues for Congress, by Ashley J. Lawson.
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Figure 2. Cumulative Utility-Scale Electric Generating Capacity Additions, 2024
Source: U.S. Energy Information Administration, “U.S. Power Grid Added 20.2 GW of Generating Capacity in the First Half of 2024,” August 19, 2024, https://www.eia.gov/todayinenergy/detail.php?id=62864. Notes: Does not include additions with less than 1 megawatt capacity (e.g., rooftop solar panels).
Ownership Structure and Regulation
The electricity system is made up of three distinct but interrelated systems (Figure 3). The generation system consists of power plants that generate electricity. The transmission system consists of high-voltage transmission lines and associated equipment that move power across long distances.4 The distribution system makes final delivery of electricity to most homes and businesses (some businesses with high electricity demand, such as heavy industry facilities, buy power directly from the transmission system).
4 For additional information about the transmission system, see CRS In Focus IF12253, Introduction to Electricity Transmission, by Ashley J. Lawson.
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Figure 3. Simplified Schematic of Electric Power Sector Systems
Source: CRS, adapted from U.S.-Canada Power System Outage Task Force, Final Report on the August 14, 2003, Blackout in the United States and Canada: Causes and Recommendations, April 2004, p. 5, https://www.energy.gov/ sites/prod/files/oeprod/DocumentsandMedia/BlackoutFinal-Web.pdf. Notes: Not all types of components in each system are shown.
Originally, the electricity system was made up of many vertically integrated utilities in charge of essentially all aspects of these three systems in their service territories, subject to state regulation. In 1935, Congress passed the Federal Power Act, limiting federal jurisdiction to “only those matters which are not subject to regulation by the States.”5 The Federal Power Act established areas of federal jurisdiction as “the transmission of electric energy in interstate commerce” and “the sale of electric energy at wholesale in interstate commerce.” The Federal Energy Regulatory Commission (FERC) regulates these areas. Many aspects of electricity that are of interest to Members of Congress and their constituents—retail rates, the generation mix, siting of facilities, and others—are mostly outside of federal jurisdiction under current law.
Three main ownership models exist within the electricity industry.6 A utility’s ownership model affects how it is regulated.
• Investor-owned utilities (IOUs) are private companies that operate on a for-profit basis. State governments allow them to act as monopolies in their service territory, with no competition for electricity distribution. In return, IOUs are subject to regulation and oversight by state public utility commissions (PUCs). Such regulation includes the profits IOUs may earn.
• Publicly owned utilities (POUs, sometimes called municipal utilities or munis) are owned by local governments and operated on a not-for-profit basis. They are not generally regulated by PUCs. Instead, local governments typically regulate POUs and provide oversight.
• Electric co-operatives (co-ops, sometimes called rural co-ops) are member- owned organizations and operated on a not-for-profit basis. They are typically
5 16 U.S.C. §824(a). For a discussion of the jurisdictional boundaries established by the Federal Power Act, see CRS In Focus IF11411, The Legal Framework of the Federal Power Act, by Adam Vann.
6 Other organizations, such as federal power marketing administrations, irrigation districts, and the Tennessee Valley Authority, own and operate electricity infrastructure, but these are special circumstances.
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located in rural areas and are not generally regulated by PUCs. Instead, co-op members or their elected boards typically regulate co-ops and provide oversight.
In 1978, Congress passed the Public Utility Regulatory Policies Act of 1978 (P.L. 95-617), creating a class of non-utility power producers—qualifying small power and cogeneration facilities—which introduced competition for electricity generation. Congress further promoted competition for electricity generation with the Energy Policy Act of 1992 (P.L. 102-486). As a result, in many parts of the United States, the electricity industry began to transition from vertically integrated local monopoly companies to a business model in which power generation is competitive. This transition is called restructuring or deregulation. However, even when companies compete for generation, the transmission and distribution functions remain primarily operated by utilities regulated by state or local regulators as described above.
In regions with restructured electricity industries, competitive markets largely set the wholesale price of power. These regions are shown in Figure 4. What consumers ultimately pay for electricity is based on auctions in regional transmission organization (RTO) or independent system operator (ISO) systems, wherein generators competitively bid to provide energy. Rates for wholesale transactions of RTOs and ISOs are under FERC’s jurisdiction (except for ERCOT which manages wholesale transactions solely within the state of Texas). Wholesale electricity generation rates depend upon the market rules and structure of the RTO or ISO, and can have cost components for energy, capacity, ancillary services,7 operating reserves, and general system costs and regulatory fees. The retail rate consumers pay is the sum of these generation costs plus transmission and distribution costs and any other costs approved by the utility regulator (e.g., costs associated with low-income bill assistance programs or environmental programs). While FERC is largely responsible for regulation of the interstate transmission system and wholesale power markets, regulation of the distribution function of the electric power business is still largely carried out by state or local authorities.
7 Ancillary services are “services that ensure reliability and support the transmission of electricity from generation sites to customer loads. Such services may include load regulation, spinning reserve, non-spinning reserve, replacement reserve, and voltage support.” U.S. Energy Information Administration (EIA), “Glossary.” For further discussion of ancillary services, see the appendix in CRS Report R45764, Maintaining Electric Reliability with Wind and Solar Sources: Background and Issues for Congress, by Ashley J. Lawson.
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Figure 4. Regional Transmission Organizations and Independent System Operators
Source: Federal Energy Regulatory Commission (FERC), “RTOs and ISOs.” Notes: FERC does not regulate the electricity industry in Alaska, Hawaii, or U.S. territories. Regional transmission organizations and independent system operators do not operate electricity systems in the Northwest, Southwest, or Southeast.
Electricity Reliability and Security
A stable supply of electricity is widely viewed as being critical to the economy, public health, and other aspects of modern life. Many kinds of events can potentially disrupt electricity supply, including weather events, cyberattacks, and physical attacks on electricity facilities. Vulnerabilities in the fuel supply networks for electric power plants (e.g., natural gas pipelines) also pose potential reliability risks. Further, aging infrastructure and the changing generation mix pose potential reliability risks because of the operational challenges they present. Recently, many utilities have announced anticipated electricity demand growth, marking a change from the relatively flat demand for electricity seen over the last 10 years or more (Figure 1).8 Electricity supply shortages, and associated reliability risks, could increase if electricity demand growth outpaces new capacity additions.9
Congress directed FERC to regulate electric reliability, including cybersecurity considerations, in the Energy Policy Act of 2005 (P.L. 109-58). FERC’s authority over reliability covers most of the
8 See, for example, John D. Wilson et al., Strategic Industries Surging: Driving U.S. Power Demand, Grid Strategies, December 2024, https://gridstrategiesllc.com/wp-content/uploads/National-Load-Growth-Report-2024.pdf.
9 For further discussion of potential reliability risks, see, for example, North American Electric Reliability Corporation (NERC), 2024 Long-Term Reliability Assessment, December 2024, https://www.nerc.com/pa/RAPA/ra/ Reliability%20Assessments%20DL/NERC_Long%20Term%20Reliability%20Assessment_2024.pdf.
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generation and transmission systems in the contiguous United States. Alaska and Hawaii are exempt from federal reliability requirements. FERC oversees electric reliability in coordination with the North American Electric Reliability Corporation (NERC). FERC’s authority does not extend to questions of ensuring sufficient electricity capacity is built (resource adequacy). State and local utility regulators have authority over resource adequacy.
Weather events can damage electricity facilities, especially transmission and distribution systems. Prominent events in recent years—hurricanes, wildfires, winter storms, and heat waves—have exposed various vulnerabilities in the electricity system. Numerous options exist to prevent outages from similar events in the future, but they often are more expensive than the status quo. The federal government has provided financial assistance to prepare for and recover from damaging weather events. For example, disaster assistance funds sometimes support electricity system rebuilding, and Congress provided over $10 billion for FY2022-FY2026 for financial assistance for grid reliability and resilience in the Infrastructure Investment and Jobs Act (IIJA; P.L. 117-58), also known as the Bipartisan Infrastructure Law.10
Physical or cyberattacks against electricity facilities can also disrupt electricity supply. For example, in December 2022, two separate physical attacks on the electricity system led to power outages for tens of thousands of customers in North Carolina and Washington.11 A successful cyberattack was reported for an unnamed Western utility in 2019, though the attack did not result in power outages.12 The electricity system has numerous potential cyber vulnerabilities. The industry, its regulators, and federal agencies have taken a variety of actions to boost cybersecurity, but vulnerabilities remain.13
Congress and regulators have responded to reliability and security threats in recent years. For example, in February 2023, FERC approved strengthened reliability standards for extreme cold weather in response to Winter Storm Uri that caused widespread power outages in February 2021.14 IIJA programs aimed to fund upgrades to electricity infrastructure that can improve reliability and resilience. NERC reviewed existing reliability standards related to physical security in response to attacks in late 2022 and identified areas for potential improvement, such as clarification of appropriate risk management activities related to physical security.15
Congress could consider options related to electric reliability and security. Options include
• Continued monitoring of electric reliability and security, and oversight as necessary.
10 For additional information on grid reliability and resilience funding in the Infrastructure Investment and Jobs Act (P.L. 117-58), see CRS Report R47034, Energy and Minerals Provisions in the Infrastructure Investment and Jobs Act (P.L. 117-58), coordinated by Brent D. Yacobucci, and U.S. Department of Energy (DOE), “Grid Resilience and Innovation Partnerships (GRIP) Program,” https://www.energy.gov/gdo/grid-resilience-and-innovation-partnerships- grip-program.
11 CRS Insight IN12074, Electric Grid Physical Security: Recent Developments, by Paul W. Parfomak.
12 NERC, Lesson Learned: Risks Posed by Firewall Firmware Vulnerabilities, September 5, 2019, https://www.nerc.com/pa/rrm/ea/Lessons%20Learned%20Document%20Library/ 20190901_Risks_Posed_by_Firewall_Firmware_Vulnerabilities.pdf.
13 U.S. Government Accountability Office, “Securing the U.S. Electricity Grid from Cyberattacks,” October 12, 2022, https://www.gao.gov/blog/securing-u.s.-electricity-grid-cyberattacks.
14 FERC, Order Approving Extreme Cold Weather Reliability Standards EOP-011-3 and EOP-012-1 and Directing Modifications of Reliability Standard EOP-012-1, February 16, 2023, https://elibrary.ferc.gov/eLibrary/filelist? accession_number=20230216-3062.
15 NERC, Evaluation of the Physical Security Reliability Standard and Physical Security Attacks to the Bulk-Power System, April 14, 2023, https://www.nerc.com/FilingsOrders/us/NERC%20Filings%20to%20FERC%20DL/ NERC%20Report%20on%20CIP-014-3.pdf.
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• Evaluating the effectiveness of the current regulatory framework.
• Providing additional financial assistance to grid infrastructure owners to prepare for, withstand, or recover from power outages.
• Assessing emerging or increasing threats to electricity reliability (e.g., the changing generation mix, malicious actors within the country and overseas, changing weather and climate conditions).
• Identifying electricity customers most vulnerable to power outages and potential policy options to support them.
Additional Resources
CRS Insight IN12074, Electric Grid Physical Security: Recent Developments, by Paul W. Parfomak.
CRS Report R45764, Maintaining Electric Reliability with Wind and Solar Sources: Background and Issues for Congress, by Ashley J. Lawson.
CRS Report R48127, Natural Gas Reliability: Issues for Congress, by Paul W. Parfomak, Ashley J. Lawson, and Michael Ratner.
CRS Insight IN11242, Power Generation and Electric Reliability in the U.S. Virgin Islands, by Corrie E. Clark.
CRS Insight IN12048, Electric Power Transformers: Supply Issues, by Paul W. Parfomak.
CRS In Focus IF12061, Critical Infrastructure Security and Resilience: Countering Russian and Other Nation-State Cyber Threats, by Brian E. Humphreys.
CRS Report R47339, Ensuring Electricity Infrastructure Resilience Against Deliberate Electromagnetic Threats, by Brian E. Humphreys.
Electricity Affordability
High electricity prices can limit some households’ ability to use the amount of electricity they would like and can reduce businesses’ profitability. Electricity prices are influenced by the cost of producing electricity and the cost of delivering electricity to customers (i.e., the power lines). While national nominal residential electricity prices have increased, inflation-adjusted (real) residential electricity prices had been mostly stable or falling for many years after 2010 (Figure 5), driven largely by increasing use of low-cost natural gas.
More recently, between 2019 and 2023, most states saw nominal residential electricity prices grow up to 6% per year (slightly more than inflation).16 Some states saw nominal prices grow up to 12% per year, and one state (North Dakota) saw prices fall.17 Two key drivers behind these price increases were relatively high natural gas prices in 2022 and growing utility expenses for their transmission and distribution systems.18
16 Sydney Forrester et al., Retail Electricity Price and Cost Trends: 2024 Update, Lawrence Berkeley National Laboratory, December 2024, p. 13, https://eta-publications.lbl.gov/sites/default/files/2025-01/ retail_price_and_cost_trends_2024_update_final_v3.pdf.
17 Ibid.
18 Ibid, pp. 18-19.
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Figure 5. Average Annual U.S. Residential Retail Electricity Prices, 2000-2025
Cents per kilowatt-hour
Source: U.S. Energy Information Administration (EIA), Short Term Energy Outlook, December 2024. Notes: Real prices are adjusted for inflation by EIA using the Consumer Price Index for December 2024. Nominal prices are not adjusted for inflation. Rates for 2024 and 2025 are forecast/estimated.
Electricity rates are not entirely indicative of households’ electricity expenditures. Customers’ electricity bills are primarily influenced by rates but are also influenced by consumption. A customer with a high rate might have a low bill if they do not use much electricity. Likewise, a customer with a low rate might have a high bill if they use a lot of electricity. Customers can experience large increases in their bills when their consumption patterns change. For example, hot summers can cause people to increase their use of air conditioners, leading to high electricity bills.
One source of data for household electricity expenditures is the Residential Energy Consumption Survey (RECS) conducted by the U.S. Energy Information Administration (EIA).19 Every four years or so, EIA collects nationally representative information about residential energy consumption and expenditures (i.e., bills). The most recent RECS survey year for which data are available is 2020. For that year, EIA found that, on average, households spent $1,380 for electricity. Expenditures vary by climate, household size, housing characteristics, and other factors. Household income is one factor of continual interest to Congress, based on observations that lower-income households spend a higher share of their income on energy.20 RECS data for expenditures by household income level are shown in Table 1.
19 Background information about the Residential Energy Consumption Survey (RECS) is at https://www.eia.gov/ consumption/residential/about.php. Recently, RECS has been conducted every four or five years, but that time interval has changed since EIA first conducted RECS in 1978. Data for 2020 electricity expenditures are from Table CE2.6, “Annual Household Fuel Expenditures—Totals and Averages, 2020,” https://www.eia.gov/consumption/residential/ data/2020/c&e/pdf/ce2.6.pdf. RECS is conducted on multiyear cycles. The RECS 2024 cycle is currently underway, so 2020 is the most recent year for which data are available.
20 See, for example, a research series conducted by the American Council for an Energy-Efficient Economy (ACEEE), available at https://www.aceee.org/policy-brief/2024/09/data-update-city-energy-burdens. Researchers at ACEEE reported energy burdens based on their analysis of data from the U.S. Census Bureau’s American Housing Survey (AHS). The ACEEE analysis was conducted in 2016, 2018, 2020, and 2024 based on AHS data releases.
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Table 1. Average Annual Household Electricity Expenditures, 2020
Household Income Electricity Expenditures
Less than $5,000 $1,188
$5,000 to $9,999 $1,056
$10,000 to $19,999 $1,089
$20,000 to $39,999 $1,209
$40,000 to $59,999 $1,285
$60,000 to $99,999 $1,404
$100,000 to $149,999 $1,552
$150,000 or more $1,830
U.S. overall $1,380
Source: U.S. Energy Information Administration, Residential Energy Consumption Survey (RECS) 2020, Table CE2.6, “Annual Household Expenditures in the United States—Totals and Averages 2020.” Notes: The most recent year for which RECS data are available is 2020.
Households that have trouble paying their bills can be disconnected for nonpayment. Experts estimate that approximately 1% of U.S. households are disconnected each year.21 The estimate is somewhat uncertain because comprehensive data have not been reported. In December 2022, Congress directed EIA to begin collecting information on disconnection, so improved data may be available in the future.22 EIA proposed details of the data collection in June 2024.23
In the early part of the COVID-19 pandemic, many utilities and utility regulators banned most disconnections, providing some relief for households facing affordability challenges. By the end of 2021, nearly all these pandemic-related disconnection moratoria had expired, and anecdotal evidence suggests that the pace of disconnections in 2022 met or exceeded pre-pandemic levels.
Congress has responded to affordability concerns in recent years. For example, annual and supplemental appropriations to the Low Income Home Energy Assistance Program (LIHEAP) can provide direct financial assistance to eligible electricity customers. Several committees have held hearings on electricity prices and affordability.24 Additionally, prices and affordability were prominent topics of debate in the context of major energy bills in the 117th and 118th Congresses.25 Affordability is likely to remain a topic of interest in the 119th Congress.
21 For more information on disconnections, see CRS Report R47417, Electric Utility Disconnections, by Ashley J. Lawson and Claire Mills.
22 The explanatory statement accompanying the Consolidated Appropriations Act, 2023 (P.L. 117-328) recommends EIA “conduct a monthly survey of electric and heating service providers of final termination notices sent due to bill non-payment, service disconnections due to bill non-payment, and Service reconnections of customers disconnected for bill non-payment, in a form and manner determined by the agency.” Congressional Record, December 20, 2022, p. S8363, https://www.congress.gov/117/crec/2022/12/20/168/198/CREC-2022-12-20-pt1-PgS7819-2.pdf.
23 EIA, “Agency Information Collection Proposed New Survey,” 89 Federal Register 51882-51883, June 20, 2024.
24 See, for example, U.S. Congress, Senate Committee on Energy and Natural Resources, The Reliability, Resiliency, and Affordability of Electric Service in the United States amid the Changing Energy Mix and Extreme Weather Events, 117th Cong., March 11, 2021; and U.S. Congress, House Energy and Commerce Committee, Energy Subcommittee, From Gas to Groceries: Americans Pay the Price of the Biden-Harris Energy Agenda, 118th Cong., September 11, 2024.
25 See, for example, debate in U.S. Congress, House Select Committee on Climate Crisis, A Big Climate Deal: Lowering Costs, Creating Jobs, and Reducing Pollution with the Inflation Reduction Act, 117th Cong., September 29, (continued...)
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Congress could consider additional options related to electricity affordability. Options include
• monitoring the development of federal data collection related to disconnections;
• providing additional support of energy efficiency or distributed electricity generation (e.g., rooftop solar panels, community solar) as ways of reducing customers’ electricity bills;
• evaluating the effectiveness of federal assistance options for consumers (e.g., LIHEAP);
• identifying and promoting best practices among the states;
• providing financial assistance to utilities to reduce potential rate increases utilities might pursue; and
• debating the appropriate role of the federal government in addressing electricity affordability.
Additional Resources
CRS Report RL31865, LIHEAP: Program and Funding, by Libby Perl.
CRS Report R47417, Electric Utility Disconnections, by Ashley J. Lawson and Claire Mills.
Greenhouse Gas Reduction
The change in generation mix illustrated in Figure 1 has led to a decline in greenhouse gas emissions from the electricity sector. Emissions declined 36% between 2005 and 2022, falling from 2,457.4 million metric tons of carbon dioxide equivalent (Mt CO2e) in 2005 to 1,577.5 Mt CO2e in 2022.26 Congress continues to debate the value of implementing federal policies to further reduce electricity sector emissions. Reducing electricity sector emissions to zero was a policy priority for the Biden Administration; the Trump Administration does not support this goal.27
Reducing greenhouse gas emissions in the electricity sector likely would have costs and benefits. Costs include those associated with building new power plants, retiring existing power plants before the end of their useful life, and building any necessary infrastructure (e.g., transmission lines). Benefits include reduced negative impacts of climate change and improved public health through reduced co-pollutants. Indirect costs and benefits include changes in employment in the electricity sector and its supply chain (e.g., fossil fuel production, solar panel manufacturing). Costs and benefits of reducing greenhouse gas emissions in the electricity sector remain a topic of active debate and research.
2022; and U.S. Congress, House Committee on Energy and Commerce, Unleashing American Energy, Lowering Energy Costs, and Strengthening Supply Chains, 118th Cong., February 7, 2023.
26 Estimates of electricity sector greenhouse gas emissions include emissions from generation, transmission, and distribution of electricity. The sector emits several greenhouse gases monitored by the U.S. Environmental Protection Agency (EPA), but carbon dioxide from fossil fuel combustion makes up approximately 97% of total sector greenhouse gas emissions. EPA, Inventory of U.S. Greenhouse Gas Emissions and Sinks 1990-2022, April 11, 2024, Table 2-11, “Electric Power-Related Greenhouse Gas Emissions (MMT CO2 Eq.).”
27 See, for example, Section 4 of Executive Order 14154, “Unleashing American Energy,” revoking a Biden Administration executive order (“Tackling the Climate Crisis at Home and Abroad”) that had articulated a goal of a “carbon pollution-free electricity sector no later than 2035.” Executive Order 14154 of January 20, 2025, “Unleashing American Energy,” 90 Federal Register 8353, January 29, 2025, https://www.federalregister.gov/documents/2025/01/ 29/2025-01956/unleashing-american-energy.
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Researchers have evaluated potential pathways to achieving a zero-emissions U.S. electricity sector (some evaluated achieving this by 2035 and others by 2050).28 While specific technology pathways and cost estimates vary depending upon researchers’ assumptions, studies generally find that a zero-emissions electricity sector would require deployment of wind and solar technologies at a faster pace than has been done to date. Additionally, other sources are likely needed to balance wind and solar (i.e., to provide electricity when the wind is not blowing or the sun is not shining). Balancing sources could be energy storage, nuclear, hydrogen, other renewables such as hydropower or geothermal, or, potentially, fossil fuel-fired power plants using carbon capture and storage technology (CCS).29 Other options to promote balancing include flexible load (i.e., large electricity users that can reduce their consumption in response to changing electricity supply) and expanded transmission capacity.
As discussed in the section “Ownership Structure and Regulation,” states have most authority over deciding what energy sources should be used to generate electricity. A number of states have adopted policies requiring zero-emissions electricity by 2050 or earlier. Additionally, some utilities have adopted voluntary goals.30
The 117th Congress passed two laws aimed, in part, at reducing greenhouse gas emissions in the electricity sector and other sectors of the economy: IIJA and P.L. 117-169, commonly known as the Inflation Reduction Act (IRA). Combined, the laws promote the use of many low- and zero- emissions technologies across the economy. Within the electricity sector, the laws support renewable energy, energy efficiency, energy storage, nuclear energy, CCS, hydrogen, and others. The 119th Congress may debate potential changes to or repeal of some of these provisions. Additionally, in Executive Order (E.O.) 14154, “Unleashing American Energy,” signed January 20, 2025, President Trump directed agencies to “immediately pause the disbursements of funds appropriated through the Inflation Reduction Act of 2022 (P.L. 117-169) or the Infrastructure Investment and Jobs Act (P.L. 117-58).”31
Congress could consider options related to greenhouse gas reduction in the electricity sector. Options include
• conducting oversight on implementation of E.O. 14154;
• evaluating federal incentives for deploying zero-emissions electricity sources, such as those included in IIJA and IRA;
• considering federal requirements to reduce greenhouse gas emissions from the electricity sector;
• monitoring developments related to state greenhouse gas reduction policies (e.g., renewable portfolio standards) and voluntary utility goals; and
• identifying an appropriate greenhouse gas reduction goal (if any) for the United States, and the role of the electricity sector in achieving any economy-wide goal.
28 For a summary of major zero-emissions electricity studies conducted between 2019 and 2021, see Table 2 of CRS Report R46691, Clean Energy Standards: Selected Issues for the 117th Congress, by Ashley J. Lawson.
29 Carbon capture and storage (CCS) potentially captures up to 95% of carbon dioxide emissions from a point source, so additional reductions may be required if CCS were to be used to achieve zero emissions from the electricity sector. For additional background on CCS, see CRS Report R44902, Carbon Capture and Sequestration (CCS) in the United States, by Angela C. Jones and Ashley J. Lawson.
30 For updates on states and utilities with 100% zero-emissions electricity policies, see the Smart Electric Power Alliance’s Utility Carbon Reduction Tracker at https://sepapower.org/utility-transformation-challenge/utility-carbon- reduction-tracker/.
31 Section 7 of Executive Order 14154 of January 20, 2025, “Unleashing American Energy,” 90 Federal Register 8353, January 29, 2025, https://www.federalregister.gov/documents/2025/01/29/2025-01956/unleashing-american-energy.
Electricity: Overview and Issues for Congress
Congressional Research Service R47521 · VERSION 5 · UPDATED 13
Additional Resources
CRS Report R47034, Energy and Minerals Provisions in the Infrastructure Investment and Jobs Act (P.L. 117-58), coordinated by Brent D. Yacobucci.
CRS Report R47262, Inflation Reduction Act of 2022 (IRA): Provisions Related to Climate Change, coordinated by Jane A. Leggett and Jonathan L. Ramseur.
CRS Report R45913, Electricity Portfolio Standards: Background, Design Elements, and Policy Considerations, by Ashley J. Lawson.
CRS Report R46947, U.S. Climate Change Policy, coordinated by Richard K. Lattanzio.
CRS Report R47561, Greenhouse Gas Emissions in the U.S. Electricity Sector: Background, Policies, and Projections, by Jonathan L. Ramseur.
Author Information
Ashley J. Lawson Acting Section Research Manager
Disclaimer
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