EP NL AND ENECO INVEST IN 200 MWh BATTERY STORAGE PROJECT AT ENECOGEN IN ROTTERDAM PORT

15.7.2025

EP NL and Eneco are realising a large-scale battery project at Enecogen’s Europoort power plant, in which both parties hold a 50% stake. The battery will have a connection capacity of 50 MW and an energy storage capacity of 200 MWh, enabling it to supply electricity for four hours. This will provide more flexibility for the Dutch electricity system when the battery is put into operation in 2027.

Battery storage enables electricity to be stored when there is more available than is needed, for example when a lot of solar and wind energy is generated. This stored electricity can then be delivered precisely when demand exceeds the available green power. This ensures that the production of green power is restricted less frequently. Additionally, price spikes are smoothed out and the battery can be used to reduce grid congestion.

Enecogen is responsible for maintenance and operations. The EP NL and Eneco trading departments control the battery.

Batteries are indispensable and acceleration is necessary.
Batteries are indispensable for the energy transition. Yet the development of battery projects in the Netherlands lags behind that in other countries. This is because batteries in the Netherlands have to pay to take power from the grid. While the battery at the Enecogen power plant has the advantage of using the existing grid connection, grid costs often present a bottleneck to the profitability of battery projects. While the possibility of entering into a time-dependent transportation contract and thus getting a discount on the grid tariff is important, it is not enough to offset the Netherlands’ lag in the battery field. Therefore, the Netherlands should apply an exemption from the net tariff for batteries, as they do in Germany and Belgium.

Karen de Lathouder, COO Assets Eneco : “It’s fantastic that we can invest in this new battery, which is a breakthrough after years of development. At the same time, it’s a shame that this is only the Netherlands’ first homegrown battery. We are still miles away from achieving the battery capacity required in the Netherlands to prevent power shortages and grid congestion, as well as reducing emissions from our energy system sufficiently. As in Belgium and Germany, batteries in the Netherlands should be exempt from grid charges to enable this acceleration..”  

Martin Bartošovič CEO EP NL: “This collaboration demonstrates how market knowlegde, technological innovation and partnership come together in a concrete project that directly contributes to a more stable and sustainable energy system. By investing in this battery, we are investing not only in flexibility, but also in the future of the Dutch energy supply.” 

Batteries mainly provide short-term flexibility, but they are not the only link in a future-proof electricity system. Long-term flexibility is also needed. With the sharp increase in solar and wind power, controllable power plants run less and less frequently and investment in them is increasingly difficult. But they are still needed for times when there is little solar and wind available. Therefore, a capacity mechanism is needed to secure this long-term flexibility in our power supply. Both tracks reinforce each other and are necessary for a stable energy supply.

About EP NL
With an installed capacity of 2.6 GW, EP NL is the third-largest power plant operator in the Netherlands. As a reliable energy partner, EP NL is playing a key role in the energy transition. The company’s areas of focus include flexible generation, energy trading, and customised solutions for businesses. Its power plants are at the heart of the business, providing flexibility and security of supply in an ever-changing energy landscape. Through the EP NL energy label, EP NL supplies businesses with electricity and gas and offers innovative energy management solutions. EP NL is part of the European energy company EPH, contributing to a stable and future-proof energy system in the Netherlands. epn.nl

About Eneco  
Eneco is an international energy company dedicated to accelerating the energy transition. As part of our One Planet Plan, we aim to achieve complete climate neutrality for our own energy consumption and that of our customers by 2035. To achieve this, we must radically electrify our energy production and supply, phase out natural gas, and accelerate the adoption of sustainable heating solutions. We are investing in sustainable production methods, energy storage solutions, and smart energy systems for consumers and businesses. Together, we are working towards a future where sustainable energy is accessible to all. www.eneco.nl

About Enecogen 
Enecogen is one of the cleanest and most efficient (>60%) gas power stations in Europe. Despite its low CO₂ and NO_x emissions, the company is continuously working to reduce them even further. The plant has a capacity of 950 MW, enough to power one and a half million households. Yet the team consists of only 47 people. Enecogen is also one of three official black start sites in the Netherlands. This recovery facility enables power plants to start up independently without relying on the external grid. Consequently, the Dutch electricity supply can be restored step by step. www.enecogen.nl    

Note for media
For more information, footage or interview requests, please contact:

EP NL
Spokesperson: Esther Warta
📧  esther.warta@epnl.nl
Project contact: Bas van Beemt
📧  bas.vandenbeemt@epnl.nl

Eneco
Spokesperson: Marnix Heijboer
📞 +31 6 61579851
📧 marnix.heijboer@eneco.com