ContourGlobal has announced a 509-megawatt solar power plant with a massive battery storage system as part of a 2,000-acre project. Under a long-term agreement, Tesla will receive 90 percent of the facility’s expected electricity output.
Project Sterling was officially launched with a groundbreaking ceremony on October 6. The facility, however, will begin operations in 2028. Once operational, it will become ContourGlobal’s largest renewable energy asset worldwide.
According to Electrek, Sterling is expected to generate more than 1.1 terawatt-hours (TWh) of electricity annually, enough to supply a year’s worth of electricity to a city of 100,000 to 120,000 residents.
Located in Mohave County, 20 miles north of Lake Havasu City, the facility spans more than 2,000 acres and will incorporate over 760,000 solar modules alongside more than 300 battery storage containers.
The storage system will use lithium iron phosphate (LFP) batteries with liquid cooling and integrated fire-protection technology. The batteries can deliver full power for about four hours. The combined solar and storage system can supply clean electricity for up to 16 hours each day.
Arizona has become a pioneer in solar development with 13,198 MWdc installed across the state. Currently, the state generates about 18.23 percent of its electricity from solar, powering nearly two million homes. “The partnership reinforces Arizona’s role in regional grid reliability,” stated PV Magazine in a report.
Project Sterling is expected to add 509 megawatts (MW) of direct-current (DC) solar capacity to Arizona, corresponding to 450 MW of alternating-current (AC) capacity. 4 gigawatt-hours (GWh) of electricity.
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