Loan guarantee countdown: DOE finalizes $337M for Mesquite Solar 1 PV project in Arizona

September 29, 2011
Facebook
Twitter
LinkedIn
Reddit
Email

As the Sept. 30 deadline for closing loan guarantees approaches, the US Department of Energy has finalized another one, this time for $337 million for the 150MW (AC) Mesquite Solar 1 power plant in Arizona. The project is owned by Sempra Energy, which has signed a 20-year power purchase agreement to sell the electricity generated to Pacific Gas & Electric.

The project, which will be built by EPC lead Zachry Holdings, will see more than 800,000 Suntech crystalline-silicon PV modules installed, with inverters supplied by Advanced Energy, marking the first utility-scale plant in the US to feature the company’s transformer-less, liquid-cooled technology. Schletter has been contracted to provide the mounting systems for the arrays.

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

The power plant will be located in Maricopa County, Arizona, about 45 miles west of Phoenix, and is expected to generate approximately 350,000MWh of electricity in its first full year of production, said to be enough to power some 31,000 homes. Some 400 construction jobs will also be created.

When DOE announced the conditional commitment for the Mesquite project loan guarantee in June, the amount was stated at $359.1 million.  

Sempra said previously that Mesquite Solar 1 will be the first part of what is planned to be a 700MW project. The initial phase construction is under way, with completion scheduled for 2013.

Read Next

April 20, 2026
Solar PV accounted for more than a quarter of total global energy demand growth in 2025, becoming the single largest contributor to new energy supply, according to the International Energy Agency.
April 20, 2026
Solar PV installations for the first three months of 2026 reached 1.4GW in Italy, according to data from trade body Italia Solare.
April 20, 2026
The US Patent and Trademark Office (USPTO) issued a Final Written Decision on patent litigations launched by Chinese solar manufacturer Trina Solar.
April 20, 2026
NTPC Green Energy, the renewables arm of state power company NTPC, has commissioned 237.5MW of a 300MW solar project it is building in Rajasthan.
April 20, 2026
Chinese PV manufacturer JinkoSolar has launched a new lightweight solar module designed for low-load-bearing rooftops.
April 20, 2026
US Customs and Border Protection (CBP) has detained solar modules produced by Vietnam-based solar manufacturer VSUN under the Uyghur Forced Labor Prevention Act (UFLPA).

Upcoming Events

Solar Media Events
June 16, 2026
Napa, USA
Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
March 9, 2027
Location To Be Confirmed