Question: Alamosa photovoltaic power plant developed by SunEdison, sells all output to Xcel Energy, a utility holding company based in what state? 

full_context: Document 1: Northern States Power Company: Northern States Power Company (NYSE: NSP ) was a publicly traded S&P 500 electric and natural gas utility holding company based in Minneapolis, Minnesota that is now a subsidiary of Xcel Energy ().
Document 2: Exelon: Exelon Corporation is an American Fortune 100 energy company headquartered in Chicago, Illinois. It generates revenues of approximately $34.5 billion and employs approximately 34,000 people. Exelon is the largest electric holding company in the United States by revenue, the largest regulated utility in the United States with approximately 10 million customers, and is also the largest operator of nuclear power plants in the United States. It was created in October 2000 by the merger of PECO Energy Company and Unicom, of Philadelphia and Chicago respectively. Unicom owned Commonwealth Edison. Exelon operates regulated utilities in Illinois, Pennsylvania, Maryland, Delaware, New Jersey, and Washington, DC. In October 2009, Exelon had full or majority ownership of 17 nuclear reactors in 10 nuclear power plants. Exelon has operations and business activities in 47 states, the District of Columbia and Canada and is the largest competitive U.S. power generator with approximately 35,000 megawatts of owned capacity. Exelon merged with Constellation Energy Group in March 2012 and acquired Pepco Holdings in March 2016. Exelon consists of eight main operating subsidiaries with Exelon Generation, a deregulated energy generator, Constellation, a deregulated competitive energy supplier, and six regulated utilities, Commonwealth Edison (Illinois), Philadelphia Electric Company (Pennsylvania), Baltimore Gas and Electric (Maryland), Delmarva Power & Light (Delaware and Maryland), Atlantic City Electric (New Jersey), and Potomac Electric Power Company (Washington, DC and Maryland).
Document 3: NSTAR (company): NSTAR was a utility company that provided retail electricity and natural gas to 1.4 million customers in eastern and central Massachusetts, including the Boston urban area. NSTAR became a subsidiary of Northeast Utilities in April 2012. In February 2015, Northeast Utilities and all of its operating companies (Public Service New Hampshire, Connecticut Light and Power, Yankee Gas, and NSTAR Gas and Electric) became one large company known as Eversource Energy.
Document 4: Navajo Generating Station: Navajo Generating Station is a 2250 megawatt net coal-fired powerplant located on the Navajo Indian Reservation, near Page, Arizona United States. This plant provides electrical power to customers in Arizona, Nevada, and California. It also provides the power for pumping Colorado River water for the Central Arizona Project, supplying about 1.5 million acre feet (1.85 km) of water annually to central and southern Arizona. As of 2017 permission to operate as a conventional coal-fired plant is anticipated until 2017-2019, and to December 22, 2044 if extended. However, in 2017, the utility operators of the power station voted to close the facility when the lease expires in 2019.
Document 5: NRG Energy: NRG Energy, Inc. is a large American energy company, dual-headquartered in West Windsor Township, New Jersey, and Houston, Texas. It was formerly the wholesale arm of Xcel Energy, and was spun off in bankruptcy in 2004.
Document 6: Beneixama photovoltaic power plant: Beneixama photovoltaic power plant is a 20 MW photovoltaic power plant located in Beneixama, Spain. The plant consists of approximately 100,000 solar panels, encompassing an area of approximately 500,000 m. The panels are City Solar PQ 200 modules made of polycrystalline silicon solar cells.
Document 7: Avra Valley Solar Generating Station: The Avra Valley Solar Generating Station is a 34 MW (DC, 25 MW AC) photovoltaic power plant in Avra Valley, Pima County, Arizona, owned by NRG. It uses single axis tracking that is designed to be maintenance free over the twenty year design life of the system. The panels are mounted on a north-south axis and rotate each day to follow the sun from sunrise to sunset, increasing the output by about 20%. Power is being sold to Tucson Electric Power in a 20-year power purchase agreement.
Document 8: Alamosa photovoltaic power plant: Alamosa photovoltaic power plant, is an 8.22 MWp photovoltaic power plant located in San Luis Valley, Colorado, USA. The power plant was developed by SunEdison, sells all output to Xcel Energy, and was completed in December 2007.
Document 9: Amonix: Amonix, Inc. is a solar power system developer based in Seal Beach, California. The company manufactures concentrator photovoltaic (CPV) products designed for installation in sunny and dry climates. CPV products convert sunlight into electrical energy in the same way that conventional solar photovoltaic technology does, except that they use optics to focus the solar radiation before the light is absorbed by solar cells. According to a comparative study of energy production of solar technologies, CPV systems require no water for energy production and produce more energy per megawatt (MW) installed than traditional PV systems. Amonix has nearly 70 Megawatts(DC) of CPV solar power systems deployed globally, including Southwestern U.S. and Spain. In May 2012, the Alamosa Solar Generating project, owned and operated by Cogentrix Energy, began commercial operation. This is the largest CPV power plant in the world and is expected to produce enough clean renewable energy per year to power more than 6,500 homes and will avoid the emissions of over 43,000 metric tons of carbon dioxide per year. The Alamosa Solar Generating Project is supported by a power purchase agreement (PPA), which is a long-term agreement to sell the power it will generate. Under the project’s PPA, the Public Service Company of Colorado will buy the power generated by the solar facility for the next 20 years. In July 2012, Amonix set the world record for photovoltaic module efficiency at 33.5% (full regression analysis) under nominal operating conditions, verified by the National Renewable Energy Laboratory. In April 2013, Amonix broke the record set in July 2012, demonstrating photovoltaic module efficiency at 34.9% (full regression analysis) under normal concentrator standard operating conditions (CSOC), also verified by the National Renewable Energy Laboratory. In August 2013, Amonix announced it had achieved a 35.9% photovoltaic module efficiency rating under concentrator standard test conditions (CSTC) as calculated by NREL. In June, 2014, the assets of Amonix were acquired by Arzon Solar, LLC for the purpose of continued development of CPV technology and products.
Document 10: Xcel Energy: Xcel Energy Inc. is a utility holding company based in Minneapolis, Minnesota, serving more than 3.3 million electric customers and 1.8 million natural gas customers in Minnesota, Michigan, Wisconsin, North Dakota, South Dakota, Colorado, Texas and New Mexico. It consists of four operating subsidiaries: Northern States Power-Minnesota, Northern States Power-Wisconsin, Public Service Company of Colorado, and Southwestern Public Service Co.
Document 11: NorthWestern Corporation: NorthWestern Corporation owns NorthWestern Energy, a utility company that serves South Dakota, Nebraska, and Montana that is based in Sioux Falls. As of December 31, 2007, the company serves approximately 650,000 customers. The company's corporate headquarters are located in Sioux Falls while the headquarters for the South Dakota operations (and which was the headquarters for the old NorthWestern Public Service Company) are in Huron, SD.
Document 12: CMS Energy: CMS Energy (), based in Jackson, Michigan, is an energy company that is focused principally on utility operations in Michigan. Its principal business is Consumers Energy, a public utility that provides electricity and natural gas to more than 6 million of Michigan’s 10 million residents. Its non-utility businesses are focused primarily on domestic independent power production. Consumers Energy has operated since 1886.
Document 13: Eversource Energy: Eversource Energy (formerly known as Northeast Utilities) is a publicly traded, Fortune 500 energy company headquartered in Hartford, Connecticut and Boston, Massachusetts, with several regulated subsidiaries offering retail electricity and natural gas service to more than 3.6 million customers in Connecticut, Massachusetts and New Hampshire.
Document 14: Solar power in Nevada: Solar power in Nevada has been growing, due to a Renewable Portfolio Standard which requires 20% renewable energy by 2015, and 5% from solar power. Nevada, at the end of 2007, became home to then-largest photovoltaic power plant in the world, the 14.2 megawatt (peak) Nellis Solar Power Plant, which, by selling the renewable energy credits (RECs), was able to provide Nellis Air Force Base with electricity for only 2.2 cents/kWh, compared to the 9 cents they are paying Nevada Power. Since then many larger solar power stations have been built in Nevada, with more proposed.
Document 15: Olmedilla Photovoltaic Park: The Olmedilla Photovoltaic Park is a 60-megawatt (MW) photovoltaic power plant, located in Olmedilla de Alarcón, Spain. When completed in July 2008, it was the world's largest power plant using photovoltaic technology.
ground_truth: Minnesota