Masdar's $950M Lockhart Complex Adds 173.7 MW Battery, 365 MW Solar

Terra-Gen held a ribbon-cutting at the Hinkley site on Nov. 10, according to its release on PR Newswire, and Masdar announced the milestone on Nov. 13, The National reported. Terra-Gen is owned jointly by Masdar and Igneo Infrastructure Partners. The companies say the complex produces enough electricity for about 350,000 homes and businesses a year.

The battery figure is a power rating, not stored energy. Neither the release nor the two news reports give a MWh figure or a duration for the 173.7 MW, so the hours of storage cannot be worked out from what has been published. Measured on the stated ratings, the complex has about 0.48 MW of battery power for every 1 MW of solar.

What the Lockhart complex contains

Terra-Gen says the site has more than 925,000 solar modules and 248 battery enclosures. First Solar supplied the modules and Nextpower the tracking systems. Cupertino Electric was the balance-of-plant engineering, procurement and construction contractor, and EPC Services was the high-voltage contractor.

Construction ran four years, created more than 1,000 on-site jobs and logged 880,000 hours worked, Terra-Gen said. The company expects the facility to generate more than $40 million in property tax revenue over its operating life.

Power is sold under a mix of offtake agreements with corporate buyers and long-term power purchase agreements (PPAs) with California load-serving entities. None of the sources names the buyers, the contract lengths or the prices.

Where the storage sits in Terra-Gen's fleet

Terra-Gen describes its gross operating portfolio as 4.4 GW of wind, solar and battery projects, including 5.6 GWh of energy storage across 34 sites, mostly in California and Texas. Its project page for the Lockhart co-located energy storage lists 128.7 MW and 515 MWh for a San Bernardino County storage project that reached commercial operation in 2026. The release does not say whether that project is part of the 173.7 MW, so the two figures should not be added or compared.

Solar sites that carry batteries are becoming common in the US, as Voltgrid News reported from EIA data on co-located batteries at new solar plants. Storage tied to a named buyer is also showing up behind data centers, as in Lydian's Faraday battery in Utah.

Masdar said it has invested about $3 billion in the US, plans a further $20 billion over the next decade and aims for a US portfolio of up to 25 GW by 2030, citing demand from AI, advanced manufacturing and electrification.

What is not confirmed yet

None of the three sources gives an energy capacity in MWh or a duration for the full 173.7 MW of storage, and none names the battery supplier or the offtakers. The financing behind the $950 million figure is not described either, and the site's cost is Terra-Gen's own stated figure.