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Lunar Energy has raised over $230 million to expand its operations in the U.S. home battery storage market. This funding includes a $102 million Series D round led by B Capital and Prelude Ventures, alongside a $130 million Series C round.

Founded by former Tesla energy chief Kunal Girotra, Lunar develops software to optimize home batteries. The company plans to expand into Texas, Puerto Rico, and Hawaii, and increase production capacity to 100,000 units per year by 2030.

The U.S. home energy storage market added nearly 4.9 gigawatt-hours in 2025, a 60% increase from the previous year. Tax credits for residential batteries will remain in place until 2027, contributing to future demand.