Wijdewormer | S4 energy

S4 Wijdewormer
Where space meets grid strength

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In Development

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Ready-To-Build

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Under Construction

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Site In Operation

About S4 Wijdewormer

The Wijdewormer project is a 150 MW / 600 MWh battery energy storage system located in the municipality of Wormerland, in the province of Noord Holland. Positioned at a strategic location within the Dutch high-voltage grid, the project is designed to address grid congestion and strengthen system stability in a region with rapidly growing renewable generation.

Currently under development, Wijdewormer will play a key role in balancing supply and demand and supporting a resilient and flexible electricity system in Noord Holland.

Project Details

Capacity 150 MW / 600 MWh
Duration 4 hrs
Status Under development
COD 2029
BESS technology Technology LFP Batteries
Grid operator TenneT

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Project Highlights

  • 150 MW / 600 MWh battery project supporting grid stability in Noord Holland
  • Strategically located to relieve grid congestion and support renewable integration
  • Developed in close coordination with local authorities and safety agencies
  • Designed with strong focus on safety, noise reduction, and spatial integration

Impact

It is estimated to avoid up to 45,000–55,000 tonnes of CO₂ emissions annually, equivalent to:

  • Approximately 25,000–30,000 cars taken off the road
  • Clean power flexibility comparable to 28,000–35,000 homes each year
  • Avoiding the emissions of roughly 13,000–16,000 flights
  • Equivalent to the annual CO₂ absorption of 2.2–2.8 million trees
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Frequently Asked Questions

The Wijdewormer project addresses one of the core challenges of the energy transition: balancing electricity supply and demand in a system increasingly dominated by variable renewable generation. By providing large-scale battery storage, the project enables surplus renewable electricity to be stored and released when needed, supporting grid stability and relieving congestion in the province of Noord Holland. This aligns with both national and European objectives to integrate renewables while maintaining a reliable electricity system, as highlighted by TenneT’s emphasis on the urgent need for storage capacity.

With a capacity of 150 MW / 600 MWh, Wijdewormer is strategically positioned to deliver significant stabilisation capacity at a critical location in Noord Holland. Its scale and connection to the transmission grid operated by TenneT allow it to function as a major flexibility buffer for the region, strengthening energy security and supporting the continued growth of renewable generation.

The project is designed as a future-proof battery park using the most reliable and modern storage technologies available. Extensive discussions with the regional safety authority have informed the design, and S4 Energy aims to select the quietest available battery technology to minimise noise impact for nearby residents while delivering robust, long-term grid support.

Safety has been a central consideration throughout the project’s development. The design and implementation have been closely coordinated with the regional safety authority to ensure a high level of safety during both construction and operation. The project will comply with all applicable statutory and industry safety and quality standards, with final technology and certification details to be confirmed.

S4 Energy has engaged proactively with the local community and authorities. In summer 2023, kitchen-table conversations were held with nearby residents, complemented by two public information evenings and communication through the local newspaper. Together with the municipality and the province, S4 Energy developed a spatial and ecological integration plan that fits the cultural and environmental character of the area. This inclusive approach helps ensure local acceptance while delivering societal value through enhanced grid reliability and support for the energy transition.

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