Southern Power commissions 150MW Wyoming solar plant

Facebook
Twitter
LinkedIn
Reddit
Email
Southern Power's South Cheyenne Solar project.
The South Cheyenne project is Southern Power’s first in Wyoming. Image: Southern Power

US energy company Southern Power has commissioned its 150MW South Cheyenne Solar project in Laramie County, in the state of Wyoming.

The company acquired the project from PV manufacturer QCells last September, and began construction immediately, with QCells remaining involved as the engineering, procurement and construction (EPC) provider. Southern Power has also signed a 20-year power purchase agreement (PPA) with a data centre manager and Cheyenne Light, Fuel and Power, a subsidiary of energy firm Black Hills Energy, to use power generated at the project.

This article requires Premium SubscriptionBasic (FREE) Subscription

Unlock unlimited access for 12 whole months of distinctive global analysis

Photovoltaics International is now included.

  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Unlimited digital access to the PV Tech Power journal catalogue
  • Unlimited digital access to the Photovoltaics International journal catalogue
  • Access to more than 1,000 technical papers
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

“We are thrilled to announce that South Cheyenne Solar has reached commercial operation, marking a significant milestone for our team and all who have worked tirelessly on this project, and we are equally excited to see our footprint expand with our first operational site in Wyoming,” said Southern Power president Robin Boren.

The project is Southern Power’s 30th solar plant, and its first in Wyoming to reach commercial operation, pushing the total capacity of the company’s solar portfolio to 2.7GW. The company’s total renewables portfolio has a capacity of 5.2GW, so the majority of its clean energy capacity is now provided by solar projects.

The news is also a positive development for the Wyoming solar sector more broadly, which has one of the smallest solar markets in the US. According to the Solar Energy Industries Association (SEIA), Wyoming had just 124MW of capacity in operation at the end of 2023, meaning that the commissioning of the South Cheyenne project has more than doubled the state’s operating capacity.

The SEIA expects Wyoming to add 685MW of new capacity between now and 2028, the 43rd-most among US states, as part of the association’s target of solar accounting for 30% of US electricity generation by 2030.

17 June 2025
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 17-18 June 2025, will be our fourth PV ModulelTech conference dedicated to the U.S. utility scale solar sector. The event will gather the key stakeholders from solar developers, solar asset owners and investors, PV manufacturing, policy-making and and all interested downstream channels and third-party entities. The goal is simple: to map out the PV module supply channels to the U.S. out to 2026 and beyond.
7 October 2025
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 7-8 October 2025 is our third PV CellTech conference dedicated to the U.S. manufacturing sector. The events in 2023 and 2024 were a sell out success and 2025 will once again gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing in the U.S. out to 2030 and beyond.

Read Next

February 17, 2025
Round-up of community solar news with new legislations progressing in the US states of Missouri and Iowa, while New Mexico started construction on the first project in the state.
February 17, 2025
Lee Zeldin said the EPA should "reassume responsibility" for funds issued under the Greenhouse Gas Reduction Fund.
February 17, 2025
Zelestra has signed a power purchase agreement (PPA) with electric vehicle manufacturer Tesla to sell 57MW of solar capacity.
February 14, 2025
Nozomi Energy has appointed Shizen Operations, a subsidiary of the Shizen Energy Group, to manage a 312MW solar portfolio in Japan.
February 14, 2025
Environmental Law & Policy Center argued that PJM’s scoring system would favour specific resource classes, such as combined cycle gas.
February 13, 2025
A report from CEA says that the impact of the new Republican administration on the provisions under the IRA remains “uncertain”.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
February 19, 2025
Tokyo, Japan
Solar Media Events
March 11, 2025
Frankfurt, Germany
Solar Media Events
March 18, 2025
Sydney, Australia