Pre Seed · Climate Tech · Langenselbold, Germany · Founded 2024 · 1–10 employees
cosy.green is a German climate technology startup providing AI-supported heating optimization systems tailored for existing multi-family residential buildings. By connecting smart thermostats in individual living units with a central boiler controller, the system uses real-time algorithms to balance heat generation and distribution dynamically. This approach reduces heating energy consumption and carbon emissions by up to 30% to 40% without requiring expensive building energy retrofits. In 2025, the company secured the state-level push! start-up grant from the Hessian Ministry of Economics, Energy, Transport, Housing. In mid-2026, the firm launched a digital crowd-investing campaign on FunderNation, securing over 192,091 EUR from more than 90 micro-investors against a valuation of up to 3.3 million EUR.
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