1KOMMA5° Extends €150M Pre-IPO Round for Energy Software

Hamburg-based 1KOMMA5°, a ClimateTech unicorn, extended its €150 million pre-IPO funding round. Sabanci Climate Ventures, the ClimateTech investment arm of Sabanci Group, joined as a new shareholder. This extension aims to accelerate organic growth and scale Heartbeat AI, their energy management software.

The company also plans significant investments in its software business.

The pre-IPO round initially closed in December 2024. 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. This funding supports the expansion of their virtual power plant (VPP) capabilities.

Scaling Energy Management Software

Founded in 2021, 1KOMMA5° employs approximately 2,500 people globally. It serves over 120,000 customers across 80 locations in seven markets. The company offers integrated renewable energy solutions like photovoltaics, electricity storage, heat pumps, and EV charging stations.

1KOMMA5° has maintained profitable growth in its core hardware business. The company will invest over €100 million into its Heartbeat AI software business from 2025 to 2027. Heartbeat AI currently controls over 500 megawatts of flexibility capacity, making it Europe's largest holistic residential virtual power plants. Competitors like Sonnen and Enpal also operate in this space.

To date, 1KOMMA5° has raised nearly €400 million in equity and remains debt-free. The company reported €520 million in revenue for 2024, with organic sales growing 36% to €490 million. This growth positions 1KOMMA5° as a key player in climate technology. Tesla Energy also offers comprehensive home energy solutions.