Coordinates: 38°12′19″N 104°34′00″W / 38.20528°N 104.56667°W / 38.20528; -104.56667

Comanche Solar Project

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Comanche Solar Project
A view of an array looking east from Lime Road.
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CountryUnited States
LocationPueblo, Colorado
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StatusOperational
Construction beganAugust 2015
Commission dateSeptember 2016
Construction cost$253 million
OwnerNovatus Energy
OperatorSwinerton Renewable Energy
Solar farm
TypeFlat-panel PV
single-axis tracking
Site area900 acres (364 ha)
Power generation
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Nameplate capacity156 MWp, 120 MWAC
Capacity factor27.7% (average 2017-2020)
Annual net output291 GW·h, 323 MW·h/acre
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Layout of the facility.

The Comanche Solar Project is a 120 megawatt (MWAC) photovoltaic power station near the city of Pueblo, Colorado. It became the largest solar facility in the state when it came online in late 2016. The electricity is being sold to Public Service of Colorado, a subsidiary of Xcel Energy, under a 25-year power purchase agreement (PPA). Xcel determined through an open bid process that the PPA's terms were competitive with natural gas.[1][2][3]

Construction details

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The project occupies a total of about 900 acres split into two parcels that are adjacent to the coal-fired Comanche Generating Station; thus providing access to existing high-capacity substation and transmission infrastructure. It uses 502,056 Trina Solar polycrystalline silicon panels that are mounted in rows and onto single-axis trackers.[4][5] The rows are organized into 75 blocks, and the electricity produced from each block is connected to the electric grid through an inverter built by TMEIC.[1]

In early 2015, SunEdison awarded an EPC contract for the project to Renewable Energy Systems (RES) of Broomfield.[6] Work at the site began in August and proceeded through the winter months, with most balance of system (BOS) construction activities completed by April 2016.[1] The panel installation, electrical integration, and acceptance testing proceeded through the summer, enabling the start of commercial operations in September.[7] The completed facility is operated and maintained by Swinerton Renewable Energy.[4]

Development and ownership history

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The project was originated by Community Energy, which completed many of the initial negotiations such as the grid integration strategy, land leases, and required permits.[8] SunEdison announced its acquisition of the project in July 2014 concurrent with the results of Xcel's open solicitation/competitive bid process.[3] In August, SunEdison announced its strategy to finance the $253 million Comanche project using a novel special purpose vehicle named "First Reserve".[9][10] As designed with its partner Everstream Capital Management, this funding mechanism - a special type of warehouse - would expand to meet demand from new investors as Comanche (and future projects) moved into construction, thus reducing the need for incremental equity contributions by SunEdison while preserving a first right of call provision for its TerraForm Power yield co.[1][11][12]

With all requirements in place, the start of construction was announced in August 2015.[6] Most BOS work was complete by the time that SunEdison filed for Chapter 11 bankruptcy protection on April 21, 2016.[1] Nevertheless, work at Comanche and other SunEdison projects continued unabated due to the company's receipt of $300 million in bankruptcy debt financing.[13] On May 16, 2017 Novatus Energy announced its purchase of the operating Comanche facility, although terms were not disclosed.[14][15][16]

Electricity production

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Generation (MW·h) of Comanche Solar [7]
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total
2016 29,335 23,889 17,647 13,721 84,592
2017 11,466 17,862 24,991 27,586 32,522 35,245 30,570 25,582 21,429 25,376 16,188 16,621 285,438
2018 15,452 18,172 23,498 28,477 32,816 35,266 30,739 30,690 29,497 21,995 18,131 13,127 297,860
2019 15,125 15,937 23,742 27,950 29,756 33,470 31,681 32,251 26,622 26,168 16,264 11,855 290,821
2020 16,771 17,112 26,628 28,533 33,986 32,285 31,235 29,451 26,492 19,131 16,898 12,209 290,731
2021 13,370 11,618 18,124 21,098 21,311 29,678 33,758 30,274
Average Annual Production (years 2017-2020) ---> 291,122

See also

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References

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