CleanTech Start-Up 1KOMMA5° Extends €150 Million Pre-IPO Funding Round

1KOMMA5°, a German home electrification Start-Up and CleanTech unicorn, led by Philipp Schröder(Co-Founder and CEO), Barbara Wittenberg(CTO), Micha Grüber(Co-Founder and CFO), Jannik Schall(Co-Founder and CPO), Philip Liesenfeld(Co-Founder and COO), Sascha Koppe(Chief Revenue Officer), Sophia Rödiger(Chief Marketing Officer), Carsten Buchberger(Chief People Officer), Marie-Isabelle Heiss(Chief of Staff), Fabian Hafner(Head of Regulatory & Public Affairs), Lars Schüttemeyer(VP Development B2B), and Sascha Schnorbach(VP Development B2C), 1Komma5° extended its €150 million pre-IPO funding round initially closed in December 2024, bringing Sabanci Climate Ventures, the climate tech investment arm of Sabanci Group, on board as a new shareholder. To date, 1KOMMA5° has raised almost €400 million in equity and remains debt-free. Existing investors include Hamilton Lane, CalSTRS, G2VP, Porsche Ventures, Eurazeo, b2venture, eCapital, 2150vc, Norrsken, Blue Elephant Ventures, the Haniel and Schürfeld family offices, and Jan Klatten.

The new funding will accelerate the growth of Heartbeat AI, 1KOMMA5°’s energy management platform and virtual power plant (VPP), helping millions of homes in Europe and Australia transition from fossil fuels to clean, low-cost electricity.

1KOMMA5° has maintained profitability in its core hardware business despite a challenging European market, while steadily expanding Heartbeat AI and its virtual power plant to drive software revenue. The company plans to invest over €100 million between 2025 and 2027 to scale its software operations. Heartbeat AI already controls more than 500 megawatts of flexibility capacity, making it Europe’s largest residential virtual power plant. Founded in 2021, 1KOMMA5° now serves over 120,000 customers and employs nearly 2,500 people globally.