Tesla’s Megapack battery storage systems will soon power a massive new utility-scale battery energy storage system (BESS) in California. Arevon Energy has officially kicked off construction of the $600 million, 300 MW/1,200 MWh Nighthawk Energy Storage Project in Poway, just outside San Diego, with completion expected in January 2026.
The Nighthawk facility will be capable of powering up to 385,000 homes for four hours each day during peak demand, helping stabilize California’s energy grid and reduce the risk of brownouts and blackouts. The project is being developed, owned, and operated by Arevon, which is also behind a 200 MW Tesla Megapack-powered BESS that recently went live in Barrio Logan, also near San Diego.
“What sets the Nighthawk Energy Storage Project apart is Arevon’s years of experience and proven track record in successfully developing safe, reliable renewable energy and battery storage projects in California and throughout the United States as well as the project’s design, which includes added safety measures and will comprise the safest and most advanced batteries on the market today,” said Arevon CEO Kevin Smith.
“Battery storage is the way of the future, and Arevon is pleased to bring this essential energy solution to Poway, where we are committed to being a great community partner through the project’s multi-decade life.”
Tesla’s Megapack systems have become a cornerstone of grid-scale energy storage projects worldwide — from Nevada and Hawaii to Japan, China, Australia, and across Europe. They were recently selected to power China’s largest grid-scale battery energy storage plant and are quickly becoming the backbone of a cleaner, more resilient energy grid in the U.S.
Construction of the Nighthawk facility is being handled by California-based Rosendin and is expected to create over 130 local jobs. Over the life of the project, Nighthawk is projected to generate more than $30 million in payments to the local government, with the City of Poway receiving approximately $12 million to support infrastructure, schools, and public services.
Tesla, meanwhile, recently celebrated its 1,000th Megapack produced at its Shanghai Megafactory, following last year’s milestone of 10,000 units built in Lathrop, California. To support growing demand, the EV and energy giant also recently signed a $4.3 billion deal with LG Energy Solution for U.S.-made LFP batteries, reportedly for use in Megapack and other energy storage products.
