By Battery Power Staff
January 29, 2026 | This month, a few funding rounds for battery energy storage systems, geothermal power, and solid-state batteries.
$223M: Financing for Grid-Scale Battery Energy Storage System
Terralayr has raised $223 million, including a $93 million upsizing option. The funding will help Terralayr to scale its grid-scale battery energy storage system (BESS) portfolio as well as its flexibility-as-a-service platform LAYR. LAYR is a platform where BESS owners and optimizers can rent out or procure BESS flexibility under tolling agreements at different durations and sizes by virtualizing projects’ capacity.
$97M: Series B for Geothermal Power Generation and Energy Storage
Sage Geosystems closed over $97 million in Series B funding to advance its geothermal power generation and energy storage solutions, including its first commercial next-generation geothermal power generation facility that will be deployed at an existing Ormat power plant. The facility will use Sage’s proprietary technology to extract geothermal heat energy from hot dry rock, supplying reliable and affordable carbon-free power. Sage’s next-generation pressure geothermal technology transforms the Earth’s natural heat and pressure into a reliable, secure, and commercial-scale energy source for power generation, long-duration energy storage, and district heating.
$57.5M: Series B for Vehicle-Grade Solid-State Battery Products
Tailan New Energy has completed a $57.5 million in Series B+ financing. The funds from this round will be used to accelerate the industrialization process for the company’s vehicle-grade solid-state battery products, increase investment in the research and development of key solid-state battery technologies, promote the construction of the company’s first mass production line for all-solid-state batteries, strengthen the talent system construction in the new stage, and continuously consolidate the company’s first-mover advantage in the application of solid-state batteries in multiple scenarios and dimensions.
$43M: Series A for Hybrid and Electric Marine Propulsion
Fleetzero announced a $43 million Series A financing and the opening of a new manufacturing and R&D facility in Houston. The funds will be used to expand manufacturing of Fleetzero’s Leviathan hybrid and electric marine propulsion system, which is being deployed globally on commercial vessels. Fleetzero’s new headquarters in Houston will serve as the company’s hub for manufacturing and R&D. The facility includes a production line with an initial capacity of 300 MWh/year of marine ESS systems, a marine robotics and autonomy lab, and a marine propulsion R&D center. Fleetzero plans to expand its Houston production capacity up to three GWh/yr over the next five years.
