Copia Power has reached a major construction milestone at its Maricopa Energy Center in Maricopa County, Arizona, where hundreds of Tesla Megapacks have now been installed as part of a large solar-plus-storage project. The facility combines utility-scale battery energy storage with on-site solar generation to support grid reliability and flexible power delivery.
Copia Power announced a total of 594 Tesla Megapacks have now been installed. Once completed, the project will pair 2,200 MWh of battery energy storage with a 550 MW solar facility, making it one of the largest Megapack deployments in the world to date.
According to Copia Power, the battery energy storage system (BESS) will play a critical role in delivering flexible, dispatchable power—helping stabilize the grid during periods of peak demand and when solar generation drops. Large-scale storage like this allows renewable energy to be shifted from periods of excess production to times when electricity is needed most, improving both reliability and efficiency.
This massive project milestone comes as Tesla’s Energy division continues to post strong growth. In its latest financial results, Tesla reported that revenue from the segment increased 25% year-over-year to $3.84 billion, while storage deployments reached a record 14.2 GWh in Q4, bringing full-year deployments to 46.7 GWh.
Tesla has described 2025 as a pivotal year for positioning itself as a supplier of “clean, affordable and rapidly deployable energy capacity”, particularly as global electricity demand accelerates due to electrification, AI data centers, and grid modernization efforts. Projects like Maricopa demonstrate how Tesla’s energy products are being deployed at scale to meet those challenges.
