October 23, 2025
Founded by veterans of SolarBridge, Enphase, SunPower, OutBack Power, and ABB, Stormentum is developing a patented “Cellular Inverter” architecture that cuts hardware costs by 50% and prepares installers for the post-incentive, storage-first era.
Austin, TX — October 23, 2025 — With $2M in pre-seed funding, Stormentum is advancing development of its storage-first inverter system, giving installers flexibility as solar incentives expire and storage becomes the foundation of home energy. The company’s storage-first “Cellular Inverter” platform reduces hardware costs by 50% and lowers total system costs by up to 30%, helping installers deliver affordable energy independence to homeowners.
“Residential solar and storage is at a crossroads,” said Patrick Chapman, co-founder and CEO of Stormentum. “With federal incentives for solar phasing out at the end of 2025 and storage adoption surging, the industry needs systems purpose-built for this new reality. Installers need tools that lower costs and unlock battery choice, and homeowners need affordable, reliable backup.” Stormentum delivers both with a modular, battery-agnostic inverter that combines an entirely new inverter architecture with open integration, lowering costs and accelerating the transition to the storage era of home energy.
“It’s been decades since we’ve seen a truly new architecture for power conversion in the residential solar sector, and with the massive growth of home energy storage, it’s needed.” said Craig Lawrence, Partner at Energy Transition Ventures and former solar industry executive. “Stormentum is building an innovative solution that leverages the batteries that are now table stakes for residential energy, using them to drive down the cost of installations.”
With a founding team that previously built SolarBridge Technologies to a successful exit with SunPower, and who brings decades of collective experience at Enphase, SunPower, OutBack Power and ABB, Stormentum brings unmatched technical expertise and market insight to one of the fastest-growing sectors in clean energy.
Supported by backing from leading climate-tech investors led by Energy Transition Ventures and with participation from Cyan Ventures and Climate Capital, Stormentum is advancing patent-pending prototypes of its Core and Cell products.
About Stormentum
Stormentum is accelerating energy independence by helping solar installers provide storage-first systems that homeowners can actually afford. Its Cellular Inverter system cuts hardware costs by 50%, works with the widest range of third-party batteries, and reduces total system costs by up to 30%. Unlike legacy solar that backfeeds to the grid or proprietary battery platforms that lock installers into costly ecosystems, Stormentum delivers the affordable foundation for storage-first home energy. Stormentum is backed by Energy Transition Ventures, Cyan Ventures, and Climate Capital.
About Energy Transition Ventures
Energy Transition Ventures LLC is a venture capital fund manager headquartered in Houston, Texas, investing in early-stage startups that benefit from or drive the energy transition.
MEDIA CONTACT
info@stormentum.com