Solar-cap

About

Founded in 2024, Solar-cap is a private headquartered in Zwolle, Netherlands with approximately 1-10 employees specializing in Solar, Energy Storage.

Solar-cap is a Dutch renewable energy company founded by Jasper Over, headquartered in Zwolle. The company specializes in intelligent energy storage solutions designed to maximize the use of excess solar energy generated by residential photovoltaic systems. Rather than feeding surplus electricity back to the grid—an increasingly costly practice—Solar-cap's systems redirect this energy to heat domestic hot water using electric boilers. The core product line includes modular packages (80L, 100L, 120L, 150L) equipped with a Solar-Switch controller, Solar-Mix advanced regulator, flexible hose connections, and mounting hardware. The system works in tandem with existing central heating boilers, automatically supplementing with gas heating during winter months when solar generation is insufficient. Users can save up to 80% on gas consumption for hot water and avoid grid feed-in penalties. Solar-cap was selected for the KVK Innovation Top 100 in 2025 and emphasizes simplicity, affordability, and minimal environmental impact.

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