Desert Sunlight solar project gets go-ahead from Department of Interior; construction to begin soon

Facebook
Twitter
LinkedIn
Reddit
Email

US Secretary of the Interior Ken Salazar has greenlighted the Desert Sunlight Solar Farm, a 550MW (AC) solar power project to be developed, built, and operated by First Solar on 4100 acres of public lands in the California desert outside Joshua Tree National Park. Construction on the site could begin within days.

“The issuance of Desert Sunlight’s Record of Decision (ROD) is a major milestone in the project’s permitting process and paves the way for construction to begin by mid-August, maintaining the project’s eligibility for the DOE’s loan guarantee program,” Frank De Rosa, First Solar’s senior VP of North American project development, told PV-Tech. 

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Desert Sunlight is the beneficiary of a conditional loan guarantee commitment of $1.88 billion, which was announced in June by the US Department of Energy. 

“The 550MW Desert Sunlight project will be the largest PV project on federally managed land in the United States and one of the two largest PV solar projects in the world,” he continued, “both of which are being developed by First Solar.” (The other is the 550MW [AC] Topaz Solar Farm, located in the Carrizo Plain area of San Luis Obispo County, CA.)

Although he could provide any detail on the timeline of the construction phases planned at the project or any update on a potential buyer/owner for the site, De Rosa did say that nearly 9 million of the company’s Series 3 cadmium telluride thin-film PV panels will be deployed.

First Solar has two signed power purchase agreements for the project, one for 250MW with Southern California Edison, the other for 300MW with Pacific Gas & Electric.

An onsite substation and a 230kV generation tie line will connect the project to the Red Bluff substation, which will convert the power from 230kV to 500kV for transmission on SCE’s regional grid.

De Rosa noted that in regards to eventual interconnection of the power plants’ output to the two utilities’ grids, the solar company is “not planning on energizing one off-taker before the other.”

The PV farm will create more than 630 jobs at peak construction and pump an estimated $336 million into the local economy. When built, Desert Sunlight will produce enough electricity to power over 165,000 homes.

About $197 million of the $336 million that the project is expected to generate for the local region will be in the form of wages. More than three-quarters of the total impact will occur during the construction period, with the remainder taking place over the project’s 25-year operating period.

The project, located about six miles north of Desert Center, will also generate about $27 million in sales and property tax revenue to Riverside County.

As part of Interior’s commitment to responsible development of renewable energy, the Desert Sunlight project underwent extensive environmental review and mitigation, with the final environmental impact statement issued on April 15. 

The Bureau of Land Management (BLM) worked in close coordination with Desert Sunlight, the National Park Service, and other stakeholders to significantly reduce the proposed project’s total footprint from 19,000 acres down to 4,144 acres. 

In addition, BLM requires that Desert Sunlight provide funding for acquisition and enhancement of more than 7,500 acres of suitable habitat for desert tortoise and other sensitive wildlife species to help mitigate the project’s potential impacts.

The decision authorizes BLM to offer Desert Sunlight Holdings a right-of-way grant to use these public lands for 30 years if all rents and other conditions are met.

The ROD also approves amendments to the bureau’s California Desert Conservation Area Plan, identifying the Desert Sunlight Solar Farm site as available for solar energy development and identifying 14,500 acres in the Project Study Area as unavailable for solar energy development.

A copy of the project Record of Decision, which also includes the amendment to the California Desert Conservation Area Plan, can be found here

Read Next

September 11, 2025
Founder Group has won a RM10 million (US$2.3 million) engineering, procurement, construction and commissioning contract for a 30MW solar plant in Malaysia.
September 11, 2025
German renewable energy developer ib vogt has signed a 70MW solar PV virtual power purchase agreement (vPPA) in Romania.
September 11, 2025
Madison Energy Infrastructure has raised US$800 million to accelerate the deployment of clean energy assets across the US. 
September 11, 2025
The PEARL Consortium has developed perovskite solar cells with carbon electrodes with a conversion efficiency of 21.6%.
September 11, 2025
The EBRD has launched a new programme to improve access to green financing and support energy investments such as renewable power projects.
September 11, 2025
Constant Energy has secured THB300 million (US$9.4 million) in green financing from HSBC to expand large-scale solar and battery storage projects in Thailand. 

Subscribe to Newsletter

Upcoming Events

Solar Media Events
September 16, 2025
Athens, Greece
Solar Media Events
September 30, 2025
Seattle, USA
Solar Media Events
October 1, 2025
London, UK
Solar Media Events
October 2, 2025
London,UK
Solar Media Events
October 7, 2025
Manila, Philippines