8 million euros in Series A for Suena engergy

Eneco Ventures and 4impact capital on board. The strategic investors are supporting the Hamburg-based start-up with capital to expand its business model.
News by Marc Nemitz Marc Nemitz · Hamburg, 18. September 2025

The Hamburg-based tech startup suena energy has closed a Series A financing round of 8 million euros. The round was led by Dutch energy company Eneco via its investment arm Eneco Ventures. Impact investor 4impact capital and existing investors InnoEnergy, J.O.S.S., Santander and Energie 360° also participated again.

This financing round is a strategic milestone for us and enables us to take our business model to the next level

Dr. Lennard Wilkening, co-founder and CEO of suena energy

Focus on European expansion and co-location storage

suena energy intends to use the capital to strengthen its market position in the energy storage market. The focus of the growth strategy is on Europe-wide scaling and the optimization of storage systems in combination with renewable energies.

The company is paying particular attention to the rapidly growing segment of co-located storage systems, i.e. storage solutions that are operated together with renewable energy systems. These require close coordination of technology, regulation and economic efficiency.

AI-supported trading platform

The platform developed by suena energy, the Energy Trading Autopilot, enables fully automated, AI-based marketing of flexibility on relevant electricity and balancing power markets.

The system processes real-time data and forecasts and calculates optimal schedules for battery storage within milliseconds. This is intended to maximize revenues and reduce risks and battery ageing.

Support from international investors

Eneco Ventures is contributing its experience in building scalable energy solutions. 4impact capital complements the consortium as an impact investor with a focus on climate-positive technologies.

The ability to optimize complex systems such as the combination of renewable energies and storage in real time is a crucial building block for the energy transition. suena energy has the potential to become the market leader in this area.

Till Wyszynski, Investment Director at Eneco Ventures

The existing investors also confirm their confidence in suena energy. InnoEnergy emphasized that the start-up's solution makes battery storage more economically attractive and at the same time raises it to a system level that is necessary for the stable expansion of renewable energies.

Founded in Hamburg, suena energy sees itself as a provider for the algorithmic and AI-supported trade optimization of battery storage and renewable energies. The start-up offers solutions for stand-alone storage systems, combined PV and wind projects at the same location and portfolio optimization. The aim is to make the integration of renewable energies more efficient and thus contribute to the development of a resilient, decentralized and climate-neutral electricity system. Startbase already reported a successful pre-seed for suena energy in 2022.


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