Partnership: Repono and suena join forces to optimize revenues of large-scale battery storage in Germany
- Dr. Lennard Wilkening
- May 7
- 4 min read
Hamburg, 5th of May, 2025 – The energy transition is increasing market volatility and intensifying pressure on grids, demanding that battery storage systems deliver not just stability, but also strong, long-lasting returns. To address these challenges, Repono AB, a leading developer, operator and financier of utility-scale battery storage projects, and suena energy, a specialist in automated trading optimization, have entered into a long-term strategic partnership. The joint goal: to maximize the economic efficiency of battery storage projects in Germany, enhance revenue stability, and strengthen grid reliability. The first joint projects are planned to reach a total installed power capacity of 250 MW and are expected to begin commercial operations from 2027 onwards.
 Repono is currently evaluating a project pipeline in Germany with a planned storage capacity of over 500 MWh to be developed within the next 3 - 5 years. Repono contributes its expertise in project development, operation and financing, while suena, as an AI-driven flexibility trader, ensures market participation and revenue optimization. By intelligently operating across all relevant power and ancillary service markets, suena ensures that the battery assets are utilized to their full economic potential – while factoring in battery aging and capacity degradation.
Battery storage as a key technology for risk-resilient grid stability
The growing integration of intermittent renewable energies such as wind and solar is causing increased volatility in the electricity grid. Battery storage systems play a crucial role in preventing grid congestion and ensuring a stable power supply. However, many existing systems are currently operated in isolated, single-market applications, leaving significant revenue potential untapped. This is where the partnership between Repono and suena comes into play: Through thorough project assessments, detailed market analysis and revenue forecasting, paired with intelligent trading optimization, the partners enable efficient project financing, flexible asset operation, and maximum profitability.
Unlocking battery value through smart operation
With its Energy Trading Autopilot, suena delivers automated and optimized trading of battery storage systems across all relevant energy markets, including:
This cross-market optimization approach allows storage assets to react dynamically to changing conditions and price signals in real time. By combining suena’s software-driven market access with Repono’s large-scale development pipeline, this partnership sets the foundation for a scalable operating model that enhances profitability and grid integration, as well as supporting a more effective use of grid infrastructure by enabling flexible capacity where it’s needed most.
Harmen de Kool, CEO of Repono: "suena is our perfect partner in designing and building our blueprint of the full hardware and software stack from the physical storage hardware on site up to generating resilient and diversified storage revenues from the energy markets. The Energy Trading Autopilot software seamlessly fits Repono’s strategy to industrialize the construction, financing and operation of storage systems. It consistently performs well in the market, is easily scalable, and offers plug-and-play as well as low-intervention automation. The perfect enabler to monetize storage and accelerate the deployment."
Dr. Lennard Wilkening, CEO of suena energy: "With Repono, we have found a partner who shares our vision of a smart, green and flexible energy future. The energy transition needs efficient storage systems – and these systems need intelligent trading strategies. By combining Repono's expertise in large-scale battery projects with our AI-driven trading service, we are providing a scalable model for maximizing the reliability and profability of battery storage systems in Germany and beyond."
Christian Bauer, CEO DACH of InnoEnergy, the impact investor driving the industrialization of cleantech innovation: "As a strategic investor in Europe's cleantech ecosystem, our mission is to build resilient value chains that drive sustainable economic growth. Today, two of our portfolio companies, suena energy and Repono, are joining forces to address some of the most critical challenges in the energy transition: ensuring grid stability, the failure of which we have unfortunately just recently experienced in Europe, and economic viability. This partnership is an example of how technological innovation and smart business models can accelerate the transition to a sustainable energy future while generating profits.”
Blueprint for scalable deployment across Europe
The partnership between Repono and suena can serve as a blueprint for future battery storage initiatives across Germany and Europe. It demonstrates that technological excellence and smart trading strategies must go hand in hand to unlock the full potential of energy storage. In addition to market optimization, suena supports project financing through its accurate revenue forecasts. The company is remunerated through a profit-sharing model tied directly to realized trading revenues. Looking ahead, the cooperation is set to expand to markets beyond Germany, helping to accelerate the energy transition through intelligent and efficient battery storage operation. About Repono
Repono AB is a leading owner and operator of utility-scale battery storage systems in Europe. With a project pipeline exceeding 500 MWh, Repono plays an active role in stabilizing the power grid and enabling the integration of renewable energy. Find out more: https://www.repono.com
About suena
suena energy is the first fully algorithmic and AI-based provider for trading optimization of battery storage and renewable energy assets. With its Energy Trading Autopilot, suena enables real-time trading strategies that maximize revenue, extend battery life, and minimize risk. Find out more: https://www.suena.energy
About InnoEnergy Transitioning Global Energy. Transitioning Every Industry. InnoEnergy is industrialising clean tech innovation to enable and grow a global net zero economy. Active in Europe and the US, the company invests in early-stage start-ups and the current and future workforce, building resilient clean tech value chains that drive sustainable economic growth. Through its ecosystem – with 1,400 partners and 39 shareholders spanning industry, finance, public policy, and academia – the company scales the energy transition at speed.
Today, InnoEnergy supports 160+ clean tech start-ups and scale-ups, 4 of which are industrial unicorns. These companies have raised more than €30 billion to date, created 40,000 jobs, and are on track to generate €110 billion in revenue and reduce 2.1 gigatons of CO2 by 2030. In support of the EU’s climate and industrial goals, InnoEnergy leads industrial alliances in batteries and solar, and accelerates uptake of green hydrogen through its acceleration. Pinpointing market gaps, InnoEnergy launches new industrial champions, in sectors including batteries, steel or fertilisers.
InnoEnergy was established in 2010 by the European Institute of Innovation and Technology (EIT), a body of the European Union, as one of its first Knowledge and Innovation Communities (KIC). In 2025, the EIT and InnoEnergy entered into a new partnership, where they will continue collaborating on specific projects.
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