TWS Technology, a global leader in lithium-based battery and energy storage solutions, has reached a new milestone in its global deployment strategy with the commissioning of a grid-connected commercial and industrial (C&I) energy storage system in the Netherlands.

This project, designed for a municipal sewage treatment plant, is part of TWS’s Energy Storage Project Case Series and highlights the company’s commitment to supporting sustainable infrastructure through innovative, high-performance energy technologies.

As the Netherlands accelerates its renewable energy transition, the intermittency of green power sources like solar and wind poses ongoing challenges for municipal services. Facilities such as sewage treatment plants, which require continuous and stable electricity supply, are particularly vulnerable to fluctuations in grid stability and rising energy costs during peak hours. In response, TWS delivered a tailor-made solution that enhances energy resilience while directly supporting the country’s broader climate objectives.

A new model for rapid deployment

Commissioned in May 2025, the project features a 500 kW / 978 kWh energy storage system built using three TWS ProeM outdoor liquid-cooling energy storage cabinets. The system also includes five 100 kW power conversion systems (PCS), one DC combiner, and one AC combiner. What sets this project apart is its modular, plug-and-play design that allows for rapid installation without the need for traditional foundation work.

This on-site installation-free model avoids several weeks of construction and complex wiring typically required for energy infrastructure, significantly lowering upfront costs and eliminating the carbon footprint associated with concrete-based foundation building. The pre-assembled system can be connected and fully operational within just eight hours—cutting commissioning time by up to 80% compared to conventional setups. The design also adapts flexibly to varied ground conditions, making it ideal for urban and industrial environments where time and space are critical.

Delivering long-term performance and value

TWS’s energy storage system is engineered to deliver strong long-term performance across multiple dimensions: economic efficiency, operational reliability, and environmental impact. It enables the sewage treatment plant to complete two full charge and discharge cycles each day, taking advantage of electricity pricing differentials throughout the day. By strategically controlling energy demand and reducing peak load, the system is expected to save the facility over €120,000 annually in electricity costs.

Beyond economic gains, the system also ensures operational continuity. A built-in diesel generator interface allows the facility to switch to backup power in the event of grid disruptions, ensuring that critical wastewater treatment services remain uninterrupted around the clock. This level of reliability is crucial for maintaining public health standards and the smooth operation of urban infrastructure.

On the environmental front, the project delivers a significant reduction in annual carbon emissions—estimated at approximately 280 tons. This supports the municipal authority’s target of achieving carbon neutrality by 2030, contributing to cleaner urban environments and more resilient public services.

Towards a smarter, greener energy ecosystem

The success of this project illustrates the strategic value of energy storage in transforming public infrastructure. It not only strengthens the reliability of local services but also contributes to grid stability by helping to manage demand during peak hours. In doing so, it supports greater integration of renewable energy into the local power mix and reduces the strain on aging grid infrastructure.

For TWS Technology, this project marks another important step in its European expansion and reinforces its status as a reliable partner for public and private sector stakeholders seeking high-efficiency, low-carbon energy solutions. Building on this success, the company plans to deepen its collaboration with municipal departments and industrial clients, expanding the scope of energy storage applications across sectors.

Through ongoing investment in research and development, and a focus on performance, adaptability, and sustainability, TWS Technology aims to support the evolving needs of the energy sector by providing solutions designed to enhance grid stability and contribute to environmental objectives.

Image Credit: TWS Technology

Banner title: Supporting carbon neutrality: TWS powers Dutch wastewater plant with clean energy

Photo description: TWS Technology grid-connected energy storage

Alternative text for photo: The photo shows a TWS Technology energy storage cabinet installed at a municipal site, part of the company’s grid-connected energy storage system in the Netherlands. The unit is housed within a fenced enclosure and positioned on a concrete foundation, suggesting a secure and operational deployment.

Link caption: tws-technology-empowers-the-netherlands-low-carbon-goals-with-grid-connected-energy-storage/

Article description (100 words): TWS Technology has deployed a 500 kW / 978 kWh grid-connected energy storage system at a municipal sewage treatment plant in the Netherlands, marking a key step in the country’s low-carbon transition. The plug-and-play solution features TWS’s ProeM liquid-cooling cabinets and enables rapid, foundation-free installation in just eight hours. Designed for high efficiency and reliability, the system supports two daily charge-discharge cycles, reduces peak power demand, and lowers electricity costs by over €120,000 annually. It also cuts CO₂ emissions by around 280 tons per year, ensuring stable operations while contributing to the municipality’s 2030 carbon neutrality targets.

Page description 135 words: TWS Technology has successfully commissioned a grid-connected commercial and industrial (C&I) energy storage system at a municipal sewage treatment plant in the Netherlands, supporting the country’s low-carbon transition. This 500 kW / 978 kWh project uses TWS’s ProeM liquid-cooling cabinets and a modular plug-and-play design that eliminates the need for traditional construction, allowing for full deployment in just eight hours. The system delivers strong performance across economic, operational, and environmental dimensions—cutting annual electricity costs by over €120,000 and reducing CO₂ emissions by approximately 280 tons. With seamless backup power capability and a two-cycle daily discharge model, the solution ensures uninterrupted operations and grid flexibility. This milestone reinforces TWS’s leadership in sustainable energy and its role in accelerating clean energy infrastructure across Europe through smart, scalable battery storage solutions.