Many countries and territories have installed significant solar power capacity into their electrical grids to supplement or provide an alternative to conventional energy sources. Solar power plants use one of two technologies:
Quay Valley was a proposed 75,000-resident solar power city in Kings County, California that was to have been developed by GROW Land and Water LLC, halfway between Los Angeles and San Francisco. In 2008, the developers of Quay Valley Ranch put the project on hold pending signs of an economic recovery. Planned as the largest new town in California on private land, as of April 2010, the Quay Valley project was tied up in litigation over water rights and it was unknown at that time if the project would move forward. In 2014, a court suit about water rights was settled in favor of the project; a new application for zoning was submitted in February 2015.
Solar power includes solar farms as well as local distributed generation, mostly on rooftops and increasingly from community solar arrays. In 2022, utility-scale solar power generated 145.6 terawatt-hours (TWh), or 3.4% of electricity in the United States. Total solar generation that year, including estimated small-scale photovoltaic generation, was 204 TWh.
Topaz Solar Farm is a 550 megawatt (MWAC) photovoltaic power station in San Luis Obispo County, California, United States. Construction on the project began in November 2011 and ended in November 2014. It is one of the world's largest solar farms. The $2.5 billion project includes 9 million CdTe photovoltaic modules based on thin-film technology, manufactured by U.S. company First Solar. The company also built, operates and maintains the project for MidAmerican Renewables, a Berkshire Hathaway company. Pacific Gas and Electric will buy the electricity under a 25-year power purchase agreement. According to First Solar, it created about 400 construction jobs.
The California Valley Solar Ranch (CVSR) is a 250 megawatt (MWAC) photovoltaic power plant in the Carrizo Plain, northeast of California Valley. The project is owned by NRG Energy, and SunPower is the EPC contractor and technology provider. The project constructed on 1,966 acres (796 ha) of a 4,365-acre (1,766 ha) site of former grazing land. It is utilizing high-efficiency, crystalline PV panels designed and manufactured by SunPower. The project includes up to 88,000 SunPower solar tracking devices to hold PV panels that track the sun across the sky.
Solar power in Romania had an installed capacity of 1,374 megawatt (MW) as of the end of 2017. The country had in 2007 an installed capacity of 0.30 MW, which increased to 3.5 MW by the end of 2011, and to 6.5 MW by the end of 2012. However, the record year of 2013 was an exception, and new installation fell back from 1,100 MW to a moderate level of 69 MW in 2014.
Solar power has been growing rapidly in the U.S. state of California because of high insolation, community support, declining solar costs, and a renewable portfolio standard which requires that 60% of California's electricity come from renewable resources by 2030, with 100% by 2045. Much of this is expected to come from solar power via photovoltaic facilities or concentrated solar power facilities.
Solar power in Arizona has the potential to, according to then-Governor Janet Napolitano, make Arizona "the Persian Gulf of solar energy". In 2012, Arizona had 1,106 MW of photovoltaic (PV) solar power systems, and 6 MW of concentrated solar power (CSP), bringing the total to over 1,112 megawatts (MW) of solar power. As an example, the Solana Generating Station, a 280 MW parabolic trough solar plant, when commissioned in 2013, was the largest parabolic trough plant in the world and the first U.S. solar plant with molten salt thermal energy storage.
Panoche Valley Solar Farm is a 130 megawatt (MW), utility-scale solar photovoltaic power station in the Panoche Valley of Central California's San Benito County. Panoche Valley is crossed by a 230-kilovolt (kV) power line from the Moss Landing Power Plant.
The Blythe Mesa Solar Power Project, also known as the Blythe Solar Energy Center, is a 235 megawatt (MWAC) photovoltaic power plant near the city of Blythe in Riverside County, California. It occupies about 2,000 acres of public land managed by the Bureau of Land Management in the Mojave Desert. The construction uses CdTe thin film panels from the U.S. firm First Solar, and the majority of the output is being sold to Kaiser Permanente and Southern California Edison under 20-year power purchase agreements.
The 21 megawatt Blythe Photovoltaic Power Plant is a photovoltaic (PV) solar project in California. It is located in Blythe, California, in Riverside County about 200 miles (320 km) east of Los Angeles. Commercial operation began in December 2009. Electricity generated by the power plant is being sold to Southern California Edison under a 20-year power purchase agreement. Another 20 MW plant called NRG Solar Blythe II came online in April 2017.
The Centinela Solar Energy Project is a 170 megawatt (MW) photovoltaic power plant located on 2,067 acres (836 ha) of previously disturbed private land southwest of El Centro, California. The project planned to provide at least 235 jobs, generate more than $30 million in tax revenue over its life-time, and deliver enough electricity to power about 82,500 homes. Imperial County gave a green-light to the solar power plant on December 27, 2011, and Secretary of the Interior Ken Salazar approved the right-of-way over 19 acres for the connecting power line on public land.
The Avenal Solar Facility is a 57.7 megawatt (MW) photovoltaic power station in Kings County, California, constructed using 450,900 SHARP-128W thin-film modules. At its completion, it was California's largest photovoltaic facility.
Solar power in Mexico has the potential to produce vast amounts of energy. 70% of the country has an insolation of greater than 4.5 kWh/m2/day. Using 15% efficient photovoltaics, a square 25 km (16 mi) on each side in the state of Chihuahua or the Sonoran Desert could supply all of Mexico's electricity.
Solar power in Florida has been increasing, as the cost of solar power systems using photovoltaics (PV) has decreased in recent years. Florida has low electricity costs compared with other states, which makes individual solar investment less attractive. Florida ranks ninth nationally in solar resource strength according to the National Renewable Energy Laboratory and tenth in solar generation by the Solar Energy Industries Association.
The Dhirubhai Ambani Solar Park at Dhursar village near Pokhran in the Jaisalmer district of Rajasthan is a 40 megawatt (MWAC) photovoltaic power station, set up in 129 days and commissioned in 2012. It is one of a large number of solar parks expected to be built in a 35,000 km2 area of the Thar Desert that has been reserved for solar power projects. The solar park was named after the late Dhirubhai Ambani, the founder of Reliance Industries, and was constructed using 500,000 Cadmium telluride photovoltaics (CdTe) modules by First Solar, and covers an area of 350 acres.
In 2022 Chile produced about 18% of its electricity from solar power, up from 7% in 2018. As of 2022, Chile produces the highest percentage of its electricity from solar in the world. At the end of 2021 Chile was ranked 22nd in the world in terms of installed solar energy.
Campo Verde Solar Project is a 139-megawatt (MWAC) solar photovoltaic power station in Imperial County, California. The project was approved in December 2012. Construction began in early 2013 and was completed the same year. Designed and constructed by U.S. thin-film manufacturer First Solar, the plant uses nearly 2.3 million CdTe-PV modules. Campo Verde Solar was acquired in April 2013 by Southern Power and Turner Renewable Energy. First Solar acquired the project in 2012 from US Solar Holdings LLC, which had developed the project and negotiated the 139 MW PPA with SDG&E.
Mount Signal Solar, also known as Imperial Valley Solar Project, is a 794 MWp (614 MWAC) photovoltaic power station west of Calexico, California, United States, in the southern Imperial Valley, near the Mexican border. The facility is being developed and constructed by 8minutenergy Renewables in three phases, with two completed as of 2018. At full build-out, it will be one of the world's largest PV solar farms with a capacity of about 800 MWp (600 MWAC). The project has been supported by several environmental groups, as the power station was built on low productivity farmland.
Kings–Tulare Regional Station is a planned California High-Speed Rail station serving Kings County and Tulare County, California. It will be located near the intersection of Hanford Expressway and Central Valley Highway, just east of the city limits of Hanford and less than 20 miles (32 km) west of the larger city of Visalia. The construction of the station has been controversial, with Tulare County supporting the station while Kings County, where the station would be located, has strongly opposed the entire California High-Speed Rail project.
