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Lunar Energy secures $232 million to expand home battery systems and VPP software. The Mountain View-based ClimateTech firm will use the funding to expand home battery deployments and scale AI-driven virtual power plant software nationwide. Mountain View - based Lunar Energy has secured a total of $232 million across its Series C and Series D funding rounds to accelerate the deployment of residential battery systems and scale its AI-powered Virtual Power Plant (VPP) software. The latest $102 million Series D round was oversubscribed and led by B Capital and Prelude Ventures, following an earlier, undisclosed $130 million Series C round led by Activate Capital. The combined funding will support Lunar's national expansion after a strong rollout in California and further development of its distributed energy software platform, Lunar Gridshare. The platform currently operates some of the largest VPP programs in the United States, enabling utilities and energy providers to manage distributed energy resources more efficiently. Additional investors participating across both rounds include DCVC, Piva Capital, Leitmotif, Sunrun, Itochu Corporation, and Q Capital Partners. Founded on the belief that the energy transition requires tightly integrated hardware and software, Lunar Energy develops home battery systems paired with AI-driven optimization tools. The company has already deployed thousands of systems and manages approximately 650 MW of distributed devices across multiple regions globally. Commenting on the funding, founder and CEO Kunal Girotra said the investment reinforces Lunar's long-held view that neither hardware nor software alone can solve electrification challenges. He added that the new capital will help homeowners transition to cleaner energy while actively supporting a more resilient electricity grid. Lunar's Gridshare platform is currently used by Sunrun to manage distributed power plants across several U.S. markets, including New England, Hawaii, and Puerto Rico. In California, Community Choice Aggregators are using the platform to design and operate new distributed energy programs, while utilities and energy retailers in Europe and Asia are also partnering with Lunar to advance grid modernization. For homeowners, Lunar's AI-led approach has translated into measurable financial benefits. In 2025, customers participating in VPP programs earned an average of $464, along with additional savings of $338 compared to conventional battery usage. Lunar's systems are designed in California and assembled in Georgia and Washington, supporting domestic manufacturing and eligibility for clean energy tax incentives. Investors highlighted Lunar's integrated model as a key differentiator in a rapidly evolving energy storage market. B Capital's Jeff Johnson said the company's ability to combine intelligent battery hardware with advanced optimization software positions it as a critical player in strengthening grid resilience and improving household energy affordability. Prelude Ventures Managing Director Tim Woodward noted that Lunar's system architecture and software intelligence have driven strong market traction, while Activate Capital Managing Partner Raj Atluru emphasized the growing importance of distributed storage solutions amid rising power demand, aging infrastructure, and climate-related grid disruptions.

The Silicon Valley startup wants to enter new markets, like Texas, and enroll more customers in virtual power plants that make the grid more reliable and…

VPP software provider Lunar Energy raises $232 million. Lunar will use the funding to expand its products and scale its Gridshare platform Integrated home battery systems and virtual power plant (VPP) software provider, Lunar Energy, has raised $102 million in a Series D funding round led by B Capital and Prelude Ventures. Lunar Energy will utilize the funding to expand its hardware and software products. It will also use the funding to scale its AI-driven distributed power software platform, Lunar Gridshare. Lunar Energy said this platform is managing major distributed resources/VPP programs in the U.S. The company had earlier raised $130 million in an unannounced Series C funding round led by Activate Capital. Funding from these two rounds totaled $232 million. These funding rounds also included participation from DCVC, Piva Capital, Leitmotif, Sunrun, Itochu Corporation, and Q Capital Partners. Lunar Energy is managing 650 MW of distributed energy devices. The company's major clients include residential solar and battery storage provider Sunrun, which utilizes the Gridshare platform for its distributed power plants in multiple markets, such as New England, Hawaii, and Puerto Rico. The platform is also used by non-profit electricity procurement entity, California Community Choice Aggregators, to develop and deploy new distributed power programs across the state. Lunar Energy's clients also include utilities and retailers in Europe and Asia. The company said its VPP earned customers an average of $464 per customer. It also claimed that the software provided customers with an additional $338 in savings compared to a standard home battery operating mode. Venture capital investment in energy storage gained momentum in 2025, rising 30% year over year to $4.8 billion across 75 deals, even as total corporate funding for the sector declined 19% to $16.2 billion, according to Mercom Capital Group's Annual and Q4 2025 Funding and M&A Report for Energy Storage. Overall corporate funding totaled $16.2 billion across 119 deals in 2025, down from $19.9 billion raised through 116 deals in 2024. Despite the decline in total capital raised, deal activity increased 3% during the year, indicating continued investor engagement in the sector.