German Startup 1KOMMA5° Extends €150 Million In Pre-IPO Round

The fresh capital will help boost organic growth and expand Heartbeat AI, the company’s energy management software and virtual power plant (VPP).

The extension adds Sabanci Climate Ventures, the ClimateTech arm of Sabanci Group, as a new investor. Existing backers include Hamilton Lane, CalSTRS, G2VP, Porsche Ventures, Eurazeo, b2venture, eCapital, 2150vc, Norrsken, Blue Elephant Ventures, the Haniel and Schürfeld family offices, and Jan Klatten.

Philipp Schröder, CEO and Co-founder of 1KOMMA5°, says: “We are excited to have the backing of another strong long-term investor, supporting us on our way to market leadership in the megamarket of home electrification. Despite two years of recession in Germany and regulatory challenges, we’ve maintained profitable growth.

“With Heartbeat AI, we are now aiming to become the last energy company consumers will ever subscribe to in their lifetime by replacing conventional utilities via AI-based, automated direct electricity procurement – delivering always the cheapest and cleanest electricity, for decades to come!”

Founded in 2021 by Jannik Schall, Micha Grueber, Michael Hinderer, Philip Liesenfeld, and Philipp Schröder, 1KOMMA5° is a ClimateTech startup focused on CO2-neutral energy, heating, and mobility.

The company employs around 2,500 people and serves over 120,000 customers across 80 locations in 7 global markets. It offers integrated energy solutions including solar panels, battery storage, heat pumps, and EV charging stations.

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Despite a challenging market for solar and heat pumps in Europe, 1KOMMA5° has continued to grow revenue and stay profitable in its core hardware business. At the same time, it has made major investments in its Heartbeat AI energy management software and virtual power plant (VPP) to drive software-based income.

Between 2025 and 2027, the company plans to invest more than €100 million in scaling Heartbeat AI, which already manages over 500 megawatts of flexible capacity—making it Europe’s largest residential virtual power plant.

So far, 1KOMMA5° has raised nearly €400 million in equity funding and remains debt-free. In February, the company announced €520 million in revenue for 2024, with €490 million from organic growth, alongside continued expansion of Heartbeat AI, according to EU-Startups.

About 1KOMMA5°

Founded in July 2021, 1KOMMA5° aims to make all buildings CO2-neutral using solar, batteries, heat pumps, and EV chargers, managed by its AI system, Heartbeat. The software optimizes energy use and trading. With 100,000+ customers, 1KOMMA5° now operates in 7 countries and leads Europe’s residential virtual power market.