Important information at a glance
In the press section of Entelios AG you will find current information and news about our company, our projects and developments in the energy market. As a pioneer in the marketing of decentralised flexibility, we are setting new standards in the energy industry and are actively driving forward the energy transition. Find out more about our innovative solutions, partnerships and our contribution to the secure and sustainable energy supply of the future.
Entelios at a glance
Entelios AG is a leading provider in the field of energy services and specialises in the marketing and optimisation of decentralised energy resources. The company aggregates flexible capacities from industrial loads, energy generation plants and battery storage systems in order to increase energy efficiency and generate additional revenue.
With innovative solutions, Entelios contributes to the integration of renewable energies and promotes the stability of the electricity grid. Thanks to state-of-the-art technologies, the company is actively supporting the energy transition and shaping the energy market of the future. Entelios combines technical expertise with sustainable commitment to drive forward the transition to a sustainable energy system.
Current publications
Press releases
Blog posts
Upcoming events
The smarter E
23. June 2026
– 25. June 2026
Munich, Trade Fair
Smarter E Europe, Europe’s largest trade fair for the energy sector. It focuses on innovative solutions and technologies in the field of renewable energies, including photovoltaics, energy storage and electromobility. In addition to the exhibition, the trade fair offers an extensive accompanying program with conferences, podcasts and expert interviews. The event serves as an important networking platform for experts, companies and innovators to exchange views on the latest developments and trends in the energy industry and to shape the future of sustainable energy.
Energy Storage Summit Germany
15. September 2026
– 16. September 2026
Berlin
On 15 and 16 September 2026, the German storage community will meet at Energy Storage Summit Germany in Berlin. The event focuses on market opportunities, regulation and business models for battery storage in the German power market.
Entelios will be on site to demonstrate how large-scale storage assets can be optimally integrated into power markets through intelligent flexibility marketing and cross-market optimisation, creating stable and predictable revenue streams.
References and success stories
With an output of 6.4 MW and a capacity of 21.6 MWh, Stadtwerke Hünfeld operates what is currently the largest battery storage system in Hesse. As a so-called three-hour system, the storage facility is particularly well suited to responding to short-term fluctuations in the power grid – a feature that is becoming increasingly important as the share of renewable energies rises.
The trading is carried out through Cross-Market-Optimisation, which specifically includes all relevant markets – including balancing energy (FCR and aFRR) as well as day-ahead and intraday markets. Entelios is responsible for the technical integration and...
With the successful prequalification of the Schkölen ground-mounted PV plant (37.4 MWp) for the aFRR market, we have set a milestone in the energy transition together with Sunnic Lighthouse and 50Hertz.
For the first time, a PV plant in Germany is performing grid-supporting tasks in the control energy market – both by reducing output in the event of a power surplus and by feeding power into the grid in the event of a shortfall.
The stand-alone battery storage facility in Karstädt strengthens Obton A/S's regional grid stability while also benefiting from market-optimised flexibility trading. The BESS has a power capacity of 20.7 MW and an energy capacity of 35 MWh and is traded by Entelios on several short-term markets such as the intraday and balancing energy markets.
Thanks to its medium-voltage grid connection (20 kV) and its geographical location in the 50Hertz control area, the storage facility is optimally integrated into the German electricity grid. The focus is on data-based cross-market optimisation, which allows the available flexibility to be used...
With another large-scale storage facility in Tangermünde, Obton A/S is expanding its German storage portfolio with another strategically located project in the 50Hertz control area. The front-of-the-meter storage facility, with a power capacity of 15.8 MW and an energy capacity of 32 MWh, contributes to local grid stability and enables cost-effective marketing on short-term markets.
Entelios is responsible for automated cross-market optimisation, including participation in the PRL and SRL balancing energy markets and active management on the day-ahead and intraday markets. Intelligent control maximises revenues while making a useful...
In Föhren, Rhineland-Palatinate, SCHOENERGIE is implementing an innovative combination of photovoltaic and battery storage. The 21 MW / 55 MWh battery storage system is directly coupled with a 17 MW PV plant and is connected to the grid via a 20 kV medium-voltage interface.
Since October 2025, Entelios has been trading the system across various short-term electricity markets (FCR, aFRR, Day-Ahead, Intraday), ensuring optimal revenue generation. The project also uses our Cross-Market Optimisation, which has been specifically designed for co-located systems. The battery storage unit is operated in Amprion's grid zone and delivers important...
With an output of 137.5 MW and a capacity of 306 MWh, one of the largest battery storage facilities in Europe is being built in Alfeld, Lower Saxony. The project, realised by Entelios, enspired and Obton, is intended to strengthen grid stability, integrate renewable energies and drive forward the energy transition from 2026. The storage facility ensures grid stability by participating in balancing markets, stores surplus energy and optimises market integration. The partnership combines Entelios' marketing expertise, enspired's AI optimisation and Obton's investment and sets new standards for large-scale storage technology.
ECO POWER ONE, a pioneering battery storage project by ECO STOR GmbH in Bollingstedt, Schleswig-Holstein, marks a significant advancement for the energy transition. With a power capacity of 103.5 MW and an energy capacity of 238.5 MWh, the battery system will make a substantial contribution to grid stability and energy security starting in January 2025.
The battery power plant of Versorgungsbetriebe Bordesholm (VBB) has been in operation since 13 May 2019 and serves as a prime example of a sustainable and decentralised energy supply throughout Germany. With an output of 15 MW and a capacity of 15 MWh, the power plant is in normal operation in the balancing energy markets and on the spot and intraday markets. In the event of a failure of the upstream transmission grid, the battery power plant for Bordesholm enables a self-sufficient, off-grid and black-start capable supply from 100% renewable energies from PV, biogas plants and CHP units.
With the launch of the new SEAL system service product on 22 May 2024, industrial flexibility will be used to stabilise the grid. SEAL replaces the Switch-off Loads Ordinance (AbLaV), which expired in June 2022, and enables electrical consumers to be switched off quickly in order to stabilise the grid frequency.
Entelios AG is the first marketer in Germany to qualify for SEAL. Since July, two Alzchem carbide furnaces with a total output of 50 MW have been successfully marketed. The systems can be switched off at short notice in the event of grid fluctuations and quickly switched back on again.
Your contact for all PR questions
Benjamin Dausch
Head of Marketing
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