Photoncycle develops an innovative year-round solar energy system designed to solve the seasonal mismatch between solar energy generation and household heating demand. Its proprietary technology converts surplus summer solar power into green hydrogen and processes it into a stable, solid-state storage medium stored in compact underground units holding up to 10,000 kWh of energy. The system integrates a reversible fuel cell, energy processing unit, and heat recovery to provide homes with continuous renewable heat and electricity.

Targeting European residential markets with high solar adoption and shifting net-metering policies, Photoncycle offers its solution via a subscription model designed to lower upfront installation costs and protect consumers from volatile winter energy prices. The scale-up is advancing commercial rollouts in Northern Europe, supported by partnerships with major homebuilders and plans for large-scale manufacturing facilities.