Energy transition startup receives 7 million euros in Series A financing

A total of four new investors join the company, and existing investors such as High-Tech Gründerfonds (HTGF) and renowned business angels again contribute fresh capital.

The selection of the four new Series-A investors was quite deliberate. For example, the funding round is led by Cologne-based VC BitStone Capital, the leading PropTech fund with strong expertise in the real estate industry. As co-investors, 10x Founders brings extensive experience in the software-as-a-service sector and impact investor BonVenture brings a clear sustainability focus. As an international investor from the energy sector, Helen Ventures from Finland is also participating in the financing round.

The software “opti.node” developed by simplifies the management of wind and solar plants. As the “digital lubricant of the energy turnaround”, opti.node takes over the fulfillment of numerous bureaucratic requirements in particular: With opti.node, plant operators can easily automate the creation of invoices, tax forms and notifications to the authorities. The software is already being used to manage around 10,000 wind energy and solar plants. is thus the market leader in Germany.

For Matthias Karger, founder and managing director of, however, this is just the beginning: “The future energy supply will be based on millions of renewable energy plants and every major building will also be a power plant at the same time. Many new providers such as real estate managers and citizen energy cooperatives are driving the change with new business models. In doing so, they are regularly confronted with the complicated rules and bureaucratic requirements of the energy market. This results in enormous market potential and further growth opportunities for us.”

“Rising energy and CO2 prices and the desire for security of supply are making renewable energy installations for real estate more attractive than ever. makes it easy for professional owners to evaluate this potential and to operate the plants successfully and legally secure. I am pleased to support the team in this socially important task,” explains Marc Stilke, Venture Partner at BitStone Capital and future Chairman of the Advisory Board at will therefore invest the seven million euros received in Series A in the further development of the software. The goal is to build a comprehensive software platform that enables professional system operators from the commercial and real estate sectors to implement new business models such as solar power direct deliveries (e.g. tenant power or power purchase

agreements/PPAs) and self-supply effortlessly. To this end, the software is being enhanced with additional functions and expanded into an end-to-end solution platform.