What is H2?
Based in South Korea, H2 specializes in the development and manufacturing of flow battery technology, a critical component for modernizing electrical grids and integrating intermittent renewable energy sources. Unlike traditional lithium-ion alternatives, H2's flow batteries offer superior scalability and longevity, making them ideal for large-scale industrial and utility applications. The company leverages top-tier engineering expertise to address the inherent challenges of energy storage, focusing on safety, efficiency, and environmental sustainability. By bridging the gap between energy generation and consumption, H2 is effectively shaping the future of the energy landscape, providing the infrastructure necessary for a carbon-neutral economy.
How much funding has H2 raised?
H2 has raised a total of $31M across 2 funding rounds:
Series B
$15M
Debt
$16M
Series B (2021): $15M, investors not publicly disclosed
Debt (2025): $16M led by K-Run Ventures, Lighthouse Combined Investment, and STIC
Key Investors in H2
K-Run Ventures
Krun Ventures is a venture capital firm established to help domestic startups with strong technological competitiveness grow into global star enterprises.
Lighthouse Combined Investment
LHCINVEST is a venture capital company established by mid-sized manufacturing companies in the southeastern region of South Korea, focusing on collaborative growth.
STIC
STIC Investments is one of the largest and most experienced private equity firms in Korea, with a proven track record across multiple business cycles.
What's next for H2?
With this latest capital, H2 is well-positioned to transition from a technology-focused startup to a global enterprise leader in the energy storage market. The strategic focus will likely shift toward commercializing its next-generation flow battery modules and expanding its manufacturing capacity to meet international demand. As the global energy sector continues to prioritize grid stability and decarbonization, H2's ability to deliver reliable, long-duration storage will be a key differentiator. Investors are closely watching the company's ability to execute on its operational roadmap, particularly as it seeks to integrate its solutions into large-scale infrastructure projects across Asia and beyond. The firm's focus on sustainable energy ecosystems remains the cornerstone of its long-term growth strategy.
See full H2 company page
