Bihar Batteries is a Spanish startup (founded 2023) developing sodium‑ion batteries for commercial and industrial stationary energy storage. Products emphasize safety, wide temperature range, 1–8 hour charge/discharge, and use of abundant raw materials.
Bihar Batteries, founded in 2023 and headquartered in Oiartzun, Spain, develops and manufactures sodium‑ion batteries for stationary energy storage. The company focuses on commercial and industrial applications, aiming to accelerate deployment of sodium‑ion systems that offer an alternative to lithium‑ion chemistry. Bihar Batteries works with research partners to scale cell development and deliver safe, sustainable storage solutions. Its stated mission is to help businesses become decentralized energy hubs by reducing electricity costs, improving reliability, and supporting renewable integration across European markets.
Bihar Batteries’ core technology is sodium‑ion cells developed in collaboration with CIC energiGUNE. The chemistry uses abundant sodium—sourced from seawater—and hard carbon anodes derived from refined timber. Design priorities are safety, cycle life and supply‑chain resilience: cells support 100% depth of discharge, operate from –20°C to 60°C, and enable 1–8 hour charge/discharge profiles. The technology is electrochemically similar and complementary to lithium‑ion, targeting stationary storage where high cycle life, thermal stability and lower reliance on critical minerals are critical. Development includes cell R&D and scale‑up toward full prototype validation.
Bihar Batteries offers sodium‑ion cells and integrated battery systems for commercial and industrial stationary energy storage. Key features include wide temperature operation, high power capability, flexible 1–8 hour charge/discharge rates, and 100% depth of discharge. Products are aimed at on‑site energy management, backup power, renewable integration, and grid services rather than automotive or consumer electronics.
In the past year Bihar Batteries completed development of its first full‑scale sodium‑ion battery prototype in collaboration with CIC energiGUNE and conducted internal testing. The initiative received support under Spain’s Renoval program (linked to RePowerEU). External partner validation is planned for late 2025, with a commercial production target set for 2026 to enable scale‑up for industrial stationary storage applications.
Bihar Batteries is privately held. Public sources as of late 2025 do not disclose specific investors, venture funding rounds, or equity partners. The company has participation in public support programs (Renoval) and collaborates with research institutions for technology scale‑up, but no detailed investor or ownership information is publicly available.
