Electric power transmission is the bulk movement of electrical energy from a generating site, such as a power plant, to an electrical substation. The interconnected lines that facilitate this movement form a transmission network. This is distinct from the local wiring between high-voltage substations and customers, which is typically referred to as electric power distribution. The combined transmission and distribution network is part of electricity delivery, known as the electrical grid.
The Bonneville Power Administration (BPA) is an American federal agency operating in the Pacific Northwest. BPA was created by an act of Congress in 1937 to market electric power from the Bonneville Dam located on the Columbia River and to construct facilities necessary to transmit that power. Congress has since designated Bonneville to be the marketing agent for power from all of the federally owned hydroelectric projects in the Pacific Northwest. Bonneville is one of four regional Federal power marketing agencies within the U.S. Department of Energy (DOE).
The Pacific DC Intertie is an electric power transmission line that transmits electricity from the Pacific Northwest to the Los Angeles area using high voltage direct current (HVDC). The line capacity is 3.1 gigawatts, which is enough to serve two to three million Los Angeles households and represents almost half of the Los Angeles Department of Water and Power (LADWP) electrical system's peak capacity.
The National Grid is the high-voltage electric power transmission network serving Great Britain, connecting power stations and major substations, and ensuring that electricity generated anywhere on the grid can be used to satisfy demand elsewhere. The network serves the majority of Great Britain and some of the surrounding islands. It does not cover Northern Ireland, which is part of the Irish single electricity market.
Southern California Edison (SCE), the largest subsidiary of Edison International, is the primary electric utility company for much of Southern California. It provides 15 million people with electricity across a service territory of approximately 50,000 square miles.
Path 27, also called the Intermountain or the Southern Transmission System (STS), is a high-voltage direct current (HVDC) electrical transmission line running from the coal-fired Intermountain Power Plant near Delta, Utah, to the Adelanto Converter Station at Adelanto, California, in the Southwestern United States. It was installed by Asea, a company based in Sweden, and commercialized in July 1986. The system is designed to carry power generated at the power plant in Utah to areas throughout Southern California. It is owned and operated by the Intermountain Power Agency, a cooperative consisting of six Los Angeles-area cities, the largest member being the Los Angeles Department of Water and Power (LADWP), and 29 smaller Utah municipalities.
NV Energy is a public utility which generates, transmits and distributes electric service in northern and southern Nevada, including the Las Vegas Valley, and provides natural gas service in the Reno–Sparks metropolitan area of northern Nevada. Based in Las Vegas, Nevada, it serves about 1.3 million customers and over 40 million tourists annually.
Nevada Power Company (NPC) was a Las Vegas-based company that produced, distributed, and sold electricity in the southern part of the state of Nevada. In 2005, it had over 700,000 electric customers in parts of three Nevada counties — a service area of more than 4,000 square miles (10,000 km2). In 1998, Nevada Power merged with Nevada's other major utility, Sierra Pacific Resources. It continued as a subsidiary of Sierra Pacific until 2005, when the company changed its name to NV Energy.
Path 15 is an 84-mile (135 km) portion of the north–south power transmission corridor in California, U.S. It forms a part of the Pacific AC Intertie and the California-Oregon Transmission Project. Path 15 is part of The Western Electricity Coordinating Council's links of electrical intertie paths in the western United States.
Path 61 or the Lugo - Victorville 500 kV Line is a relatively short AC 500 kV power line that runs from Southern California Edison's (SCE) Lugo substation southwest of Hesperia to Los Angeles Department of Water and Power's (LADW&P) Victorville substation north of Victorville, California. Path 61 is part of the Western Electricity Coordinating Council's links of electrical intertie paths in the western United States.This line is an important connection between two out of the four parts that make up the massive Path 46 transmission system in southeast California since the line allows power flow to be rerouted on Path 46 when necessary. Half of the length of the 500 kV power line is owned by SCE to the south and LADW&P to the north. The entire line is located in the Mojave Desert and the High Desert regions of California.
Path 46, also called West of Colorado River, Arizona-California West-of-the-River Path (WOR), is a set of fourteen high voltage alternating-current transmission lines that are located in southeast California and Nevada up to the Colorado River.
Amtrak's 25 Hz traction power system is a traction power network for the southern portion of the Northeast Corridor (NEC), the Keystone Corridor, and several branch lines between New York City and Washington D.C. The system was constructed by the Pennsylvania Railroad between 1915 and 1938 before the North American power transmission grid was fully established. This is the reason the system uses 25 Hz, as opposed to 60 Hz, which is the standard for power transmission in North America. In 1976, Amtrak inherited the system from Penn Central, the successor to the Pennsylvania Railroad, along with the rest of the NEC infrastructure.
The electricity sectors of the Republic of Ireland and Northern Ireland are integrated and supply 2.5 million customers from a combination of coal, peat, natural gas, wind and hydropower. In 2022, 34 TWh were generated. In 2018 natural gas produced 51.8%, while wind turbines generated 28.1%, coal 7%, and peat 6.8% of Ireland's average electricity demand. In 2020 wind turbines generated 36.3% of Ireland's electrical demand, one of the highest wind power proportions in the world. While the United Kingdom was one of the first countries in the world to deploy commercial nuclear power plants, the island of Ireland has never had a nuclear power plant built on either side of the Irish border. Nuclear power in Ireland was discussed in the 1960s and 1970s but ultimately never phased in, with legislation now in place explicitly forbidding its introduction.
Solar power in Nevada is growing due to a Renewable Portfolio Standard which requires 50% renewable energy by 2030. The state has abundant open land areas and some of the best solar potential in the country.
The Champlain Hudson Power Express (CHPE) is a planned high-voltage direct current (HVDC) underwater and underground power cable project linking the Quebec area to the New York City neighborhood of Astoria, Queens. Following completion of a review by the New York State Public Service Commission, construction began in 2022. The line is permitted and expected to be operational in 2026.
The Mead substation is a major electric power interconnection point in the western United States. The station is located in the El Dorado Valley of Nevada just outside of Boulder City, at the end of Buchanan Boulevard south of its grade separation with Interstate 11. The facility is owned and operated by the Western Area Power Administration.
The U.S. state of Utah has the solar potential to provide all of the electricity used in the United States. Utah is one of the seven states with the best potential for solar power, along with California, Nevada, Arizona, New Mexico, Colorado, and Texas. Utah's only investor owned utility currently allows partial net metering for residential systems up to 25 kW and up to 2 MW for non-residential users. In the past RMP allowed full net metering, and partial net metering. Neither of these Schedules allows for new customers to sign up any longer. Utah's municipal utilities and electric cooperatives set their own net metering policies.
Adelanto Converter Station in Adelanto, California, is the southern terminus of the 2,400 MW Path 27 Utah–California high voltage DC power (HVDC) transmission line. The station contains redundant thyristor-based HVDC converters rated for 1,200 MW continuous or 1,600 MW short term overload. The 300-acre (120 ha) station was completed in July, 1986 at a cost of US$131 million. The northern terminus of Path 27 is fossil fueled Intermountain Power Plant in Utah.
The TransWest Express Transmission Line Project (TWE) is a planned bipolar HVDC transmission line between Rawlins, Wyoming and Marketplace substation near Las Vegas.
The Moapa Southern Paiute Solar Project is a 250 megawatt (MWAC) photovoltaic power plant located in Clark County, Nevada on the Moapa River lands of the Southern Paiute people. The project was commissioned in March 2017 and was constructed by First Solar and its sub-contractors in close consultation with the Moapa Band of Paiutes and federal agencies. It is the first utility-scale solar project to be located on North American tribal lands, and is anticipated to evolve as a model for similar future economic and environmental partnerships.