Ambrosia Energy has announced plans to construct a 10 gigawatt-hour battery factory near Austin, Texas, with the goal of supporting off-grid data centers through clean energy solutions. The factory, which will span 150,000 square feet, aims to reach full production capacity within two to three years and will enable the company to produce batteries that can power about a 300-megawatt clean energy plant annually. This move follows Ambrosia’s emergence from stealth mode earlier in 2026, focusing on combining solar power with battery storage to deliver continuous, affordable energy to data centers at a target cost of $100 per megawatt hour.

Co-founded by Ben Longmier and Sara Spangelo, who previously sold their satellite constellation company Swarm to SpaceX, Ambrosia is working on its first commercial power plant in West Texas. Scheduled for completion later this year, the plant will combine 300 megawatts of solar panels with 660 megawatt-hours of batteries to provide a steady 30 megawatt power output aiming for 99.3% uptime. The company’s model involves “overbuilding” solar and storage capacity to guarantee reliable, round-the-clock service, positioning it as a cost-competitive alternative to natural gas-powered data centers favored by major tech companies.

The startup has been optimizing cost efficiencies by simplifying key components like solar mounts and battery packs and manufacturing many parts in-house. By assembling battery packs with fewer parts—about a hundred times less than typical competitors—and sourcing cells externally, Ambrosia has reduced costs dramatically, achieving roughly 1.3 times the cost of raw battery cells compared to the 5 to 7 times markup seen in most stationary storage systems. This innovative approach to battery manufacturing supports their aim to provide low-cost, reliable clean energy solutions rapidly and at scale.

Ambrosia Energy has already demonstrated a pilot power plant capable of continuous 200-kilowatt output for over 100 days, proving their technology’s reliability. Their strategy to integrate solar and battery resources provides a scalable pathway to power data centers sustainably and efficiently. The company’s planned factory and upcoming West Texas facility signal a significant step toward transforming how off-grid data centers can be powered with clean energy, helping to reduce the reliance on fossil fuels and meet the growing demands for sustainable data infrastructure.