Comanche Solar Project

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]

Comanche Solar Project
The General Layout of the Facility
CountryUnited States
LocationPueblo, Colorado
Coordinates38°12′19″N 104°34′00″W
StatusOperational
Construction beganAugust 2015
Commission dateSeptember 2016
Construction cost$253 million
Owner(s)Novatus Energy
Operator(s)Swinerton Renewable Energy
Solar farm
TypeFlat-panel PV
single-axis tracking
Site area900 acres (364 ha)
Power generation
Nameplate capacity156 MWp, 120 MWAC
Capacity factor27.7% (average 2017-2019)
Annual net output291 GW·h, 324 MW·h/acre
A view of part of the array looking east from Lime Road

Construction details

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

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
Generation (MW·h) of Comanche Solar [7]
YearJanFebMarAprMayJunJulAugSepOctNovDecTotal
2016 29,33523,88917,64713,721 84,592
2017 11,46617,86224,99127,58632,52235,24530,57025,58221,42925,37616,18816,621 285,438
2018 15,45218,17223,49828,47732,81635,26630,73930,69029,49721,99518,13113,127 297,860
2019 15,12515,93723,74227,95029,75633,47031,68132,25126,62226,16816,26411,855 290,821
Average Annual Production (years 2017-2019) --->291,373

See also

References
  1. "Pueblo Solar Power - Renewable Energy Systems has wrapped up construction of the largest solar facility in Colorado". altenerg.com. September 2016. Retrieved February 15, 2019.
  2. "Coming soon: The biggest solar farm east of the Rocky Mountains". fortune.com. August 20, 2015. Retrieved February 15, 2019.
  3. "SunEdison acquires Comanche Solar project from Community Energy". renewable-technology.com. July 24, 2014. Retrieved February 15, 2019.
  4. "Swinerton - Comanche". swinertonrenewable.com. Retrieved February 15, 2019.
  5. "Novatus - Comanche". novatusenergy.com. Retrieved February 15, 2019.
  6. "RES Selected to Construct Comanche Solar Project". prnewswire.com. August 20, 2015. Retrieved February 15, 2019.
  7. "Comanche Solar, Monthly". Electricity Data Browser. Energy Information Administration. Retrieved November 4, 2019.
  8. "Community Energy's 120 MW Comanche Solar Project Provides Bulk of Solar Power in Approved Xcel Energy Resource Plan". communityenergysolar.com. March 4, 2014. Retrieved February 15, 2019.
  9. "SunEdison Closes $253 Million of Financing, Breaks Ground on 156 Megawatt Solar Project in Colorado". prnewswire.com. August 20, 2015. Retrieved February 15, 2019.
  10. "SunEdison Turns To 'Warehouse' To Fund Comanche Solar And Other Large-Scale Projects". solarindustrymag.com. August 25, 2019. Retrieved February 15, 2019.
  11. "Everstream Capital Management - Comanche". everstreamcapital.com. Retrieved February 15, 2019.
  12. "Warehouse 8K". sec.gov. May 6, 2015.
  13. Bomey, Nathan (April 21, 2016). "SunEdison files for Chapter 11 bankruptcy". USA TODAY. Retrieved February 3, 2019.
  14. "Novatus Energy acquires the 156 MW Comanche solar project in Colorado". novatusenergy.com. May 16, 2017. Retrieved February 15, 2019.
  15. "Novatus goes deeper into solar with Colorado's largest plant". pv-magazine-usa.com. May 19, 2017. Retrieved February 15, 2019.
  16. "Novatus to Acquire First Reserve Comanche Project". relationshipscience.com. March 13, 2017. Retrieved February 15, 2019.
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