Molly Ayala
The government does not supply electricity to its citizens directly. Instead, it regulates the electricity sector and sets policies to ensure a reliable and secure supply of electricity for its citizens. The electricity sector in the US is regulated by different public institutions, with some functional overlaps. The federal government sets general policies through the Department of Energy, while economic regulation of the distribution segment is a state responsibility, usually carried out through Public Utilities Commissions. The Environmental Protection Agency is in charge of environmental regulation, and the Federal Trade Commission prevents anti-competitive practices and protects consumers. The electricity rates vary across states, and consumers can choose their electricity supplier in deregulated states.
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What You'll Learn
- The US federal government sets general policies through the Department of Energy
- The US electricity sector is regulated by different public institutions
- The US has three major synchronous electrical grids
- The US utilises many energy sources and technologies to generate electricity
- The US has experienced an unprecedented surge in electricity demand
The US federal government sets general policies through the Department of Energy
The US federal government sets general policies for the electricity sector through the Department of Energy (DOE). The DOE is an executive department of the US federal government that was created in 1977 in the aftermath of the 1973 oil crisis. It is headed by the secretary of energy, who reports directly to the president of the United States and is a member of the Cabinet. The current secretary of energy is Chris Wright, who has served in this position since February 2025.
The DOE oversees US national energy policy and energy production, as well as the research and development of nuclear power, the military's nuclear weapons program, nuclear reactor production for the US Navy, energy-related research, and energy conservation. It is the largest sponsor of physical science research among US federal agencies, with the majority of this research conducted through its system of National Laboratories. The DOE also directs research in genomics, with the Human Genome Project originating from a DOE initiative.
The DOE faces significant workforce challenges in the coming decade, with a projected retirement rate of 15-25% of its federal employees, including many of its most experienced and skilled professionals. To address these challenges, the DOE must improve its workforce planning, outreach, and recruitment programs to maintain a skilled and experienced workforce capable of meeting its science-driven missions. The DOE is committed to enhancing the quality and efficiency of its human resource operations and has implemented initiatives to reduce organizational redundancies and improve information technology systems.
The DOE has federal responsibility for the design, testing, and production of all nuclear weapons, which it carries out through contractors at various government-owned sites. The DOE's National Nuclear Security Administration (NNSA) works with other US government agencies, multilateral institutions, foreign governments, and commercial contractors to coordinate policy issues related to national security. The NNSA also has semi-autonomous status within the DOE.
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The US electricity sector is regulated by different public institutions
The US electricity sector is a complex network of private and public utilities, regulated by various public institutions at the federal and state levels. While the federal government sets general policies through the Department of Energy, economic regulation of electricity distribution is a state responsibility, carried out through Public Utilities Commissions.
The Federal Energy Regulatory Commission (FERC) plays a crucial role in regulating interstate electricity sales, wholesale electric rates, and licensing hydropower plants. FERC also has jurisdiction over the disposition of assets in the electricity sector, including mergers and corporate reorganizations.
The Environmental Protection Agency is responsible for environmental regulation in the electricity sector, while the Federal Trade Commission ensures consumer protection and prevents anti-competitive practices. Additionally, the Nuclear Regulatory Commission is involved in permitting the construction of new nuclear power reactors.
At the state level, Public Utilities Commissions or Public Services Commissions regulate electricity distribution rates, ensuring that electricity prices remain reasonable for customers. State regulators also oversee power plant investments, requiring utilities to demonstrate the necessity of proposed investments through an integrated resource planning process.
The US electricity sector operates across three major synchronous electrical grids: the Eastern Interconnection, the Western Interconnection, and the Texas Interconnection. Within these grids, Independent System Operators and Regional Transmission Organizations promote competition by providing indiscriminate access to various suppliers.
The electricity sector in the US is thus regulated by a combination of federal and state institutions, each with specific responsibilities and jurisdictions, ensuring the reliable and efficient delivery of electricity to consumers.
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The US has three major synchronous electrical grids
The US electrical power grid is not a single grid but is instead divided into multiple wide-area synchronous grids. There are two major alternating-current (AC) electrical grids in the continental US: the Eastern Interconnection and the Western Interconnection. There are also three minor power grids: the Texas Interconnection, the Alaska Interconnection, and the Quebec Interconnection.
The Eastern Interconnection reaches from Saskatchewan eastward to the Atlantic coast, excluding Quebec, south to Florida, and back west to the foot of the Rocky Mountains, excluding most of Texas. The Eastern Interconnection is connected to the Western Interconnection via seven high-voltage direct current power transmission lines (DC ties) and has a generating capacity of 700 GW. The Western Interconnection stretches from Western Canada south to Baja California in Mexico, reaching eastward over the Rocky Mountains to the Great Plains. The USA part of the Western Interconnection has a generating capacity of 250 GW. The Texas Interconnection covers most of the state of Texas.
Each region delivers power at a nominal 60 Hz frequency. The regions are not usually directly connected or synchronized with each other, but there exist some HVDC interconnectors. The Eastern and Western Interconnections are connected via seven links that allow 1.32 GW to flow between them.
The US uses many different energy sources and technologies to generate electricity. The three major categories of energy for electricity generation are fossil fuels (coal, natural gas, and petroleum), nuclear energy, and renewable energy. In 2023, about 60% of electricity generation was from fossil fuels, 19% was from nuclear energy, and 21% was from renewable energy sources. Natural gas was the top source of US utility-scale electricity generation in 2023, accounting for about 43% of generation. Solar photovoltaic and solar thermal power plants provided about 4% of total US utility-scale electricity and accounted for 18% of utility-scale electricity generation from renewable sources in 2023.
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The US utilises many energy sources and technologies to generate electricity
The US utilises a variety of energy sources and technologies to generate electricity. The sources and technologies have changed over time, with some being used more than others. The three major categories of energy for electricity generation are fossil fuels, nuclear power, and renewable energy sources.
Fossil fuels, including coal, natural gas, and petroleum, are the most common sources of energy for electricity generation. In 2023, about 60% of electricity generation came from these sources, with natural gas being the top contributor at about 43%. Coal, despite a significant decline in production since 2007, still accounted for 16% of energy generation.
Nuclear energy is another major source, contributing about 19% to the total electricity generation in 2023. There are 104 commercial nuclear reactors in the US, and while no new nuclear plants have been built in recent years, there has been a renewed interest in nuclear power since 2005, facilitated by the federal government's Nuclear Power 2010 Program.
Renewable energy sources, such as solar, hydropower, biomass, and geothermal power, are also important contributors to electricity generation. In 2023, about 21% of electricity came from renewable sources. Solar photovoltaic and solar thermal power plants provided about 4% of total utility-scale electricity, while hydropower plants contributed about 6.2%. Biomass and geothermal power each accounted for a smaller percentage, at 1% and less than 1% respectively, of total utility-scale electricity generation.
The US also has pumped-storage hydroelectricity and grid batteries, which are net consumers of electricity due to system losses. The electricity generated is distributed through a complex grid system, consisting of power lines, substations, and transformers, connecting power plants to consumers. The US electric distribution system is efficient, with an efficiency rate of about 91.93%.
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The US has experienced an unprecedented surge in electricity demand
Another factor contributing to the surge in electricity demand is the growing adoption of electric vehicles (EVs) and electric heat pumps. Millions of Americans are purchasing plug-in vehicles and heat pumps, encouraged by federal incentives. In California, electric vehicles make up one-fifth of new car sales, and it is estimated that EVs could account for 10% of power use during peak hours by 2035. Additionally, the impact of global warming, leading to increased air-conditioning usage, is also contributing to the rising demand for electricity.
The increase in electricity demand has put a strain on the grid infrastructure. Data centers, factories, electric vehicle charging depots, and other major electricity users are facing challenges due to lags in grid expansions. Grid planners are forecasting a significant increase in peak demand by 2028, and there are concerns about the grid's ability to keep up with the pace of growth. The construction of new power plants and transmission lines takes multiple years, creating a hurdle for meeting the surging electricity demand.
To address the rising demand, there are considerations for utilizing renewable energy sources and improving energy efficiency. However, debates around the future of natural gas and the potential of alternative solutions are ongoing. The US is facing the challenge of transitioning from coal- and gas-fired power plants to renewable energy sources while also accommodating the increasing demand for electricity. The surge in electricity demand underscores the country's transformation toward a more electrified and technologically advanced economy.
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Frequently asked questions
Depending on the size of your city, different roles within the municipal government are responsible for acquiring electricity for the city. These roles include the City Manager, Operations Manager, and Energy Manager. The City Manager is responsible for the management of day-to-day operations, while the Energy Manager regulates, plans, and monitors the city's energy consumption. The government owns many electric utilities in the United States, but utilities can also be publicly or privately owned.
The government plays a crucial role in regulating and overseeing the electricity sector. They ensure rational resource use by legislating safeguards for renewable resources, such as hydropower and geothermal energy. The government also promotes the development of renewable energy projects through financial initiatives like "guarantee funds" and "revolving funds". Additionally, they set guidelines for the development of the power sector, protect consumer interests, and address energy security issues.
The United States utilizes various energy sources and technologies for electricity generation. The three primary categories are fossil fuels (coal, natural gas, and petroleum), nuclear energy, and renewable energy. Natural gas is the top source, contributing about 43% of U.S. utility-scale electricity generation in 2023. Renewable energy sources, such as wind and solar, have also gained prominence, accounting for about 21% of total U.S. utility-scale electricity generation in the same year.
