News Summary

Moonwatt, a Netherlands-based clean tech startup, has successfully raised $8.3 million in seed funding to advance its solar energy storage solutions. Founded in 2024, Moonwatt is developing a battery-based storage system optimized for solar power plants using sodium-ion technology. This innovative approach aims to address the variability of solar energy by storing excess power generated during daylight for use during high-demand periods. The sodium-ion cells present a cost-effective alternative to lithium-ion, utilizing more readily available raw materials. Moonwatt’s system is designed to increase solar plants’ capacity factor to 80%, potentially doubling their return on investment. The seed round, co-led by Daphni and LEA Partners, underscores the industry’s interest in dedicated solar storage solutions, which are crucial for the continued growth of renewable energy. Moonwatt plans to pilot its technology in Europe next year, with commercial deployments anticipated by 2027.