Energy Storage Facility in Urzut – another step in Mostostal Warszawa’s green transformation

At Mostostal Warszawa, we treat sustainable development as an integral part of our business strategy. Our actions are aligned with the directions set by ACCIONA, which focuses on decarbonization, energy efficiency, and the development of innovative green energy solutions.

Projects carried out in Urzut with full support from ACCIONA serve as a practical example of implementing these principles and are regarded as a model approach. They not only reduce CO₂ emissions but also increase operational efficiency and energy security—step by step, in a thoughtful and long-term manner.

Photovoltaics as the foundation

We began the energy transformation in Urzut by launching a 50 kWp photovoltaic installation, which was later expanded by an additional 100 kWp. As a result, we significantly increased green energy production, reducing CO₂ emissions by approximately 109 tonnes annually and achieving measurable savings in electricity costs.

Electromobility in practice

An important element of our strategy is the development of electromobility. A charging station for electric vehicles, powered by energy from our own PV installation, has been launched at the Base, supporting the gradual electrification of our fleet. This solution not only reduces emissions but also enables efficient use of locally generated energy.

Energy Storage – a step toward independence

A new stage in the development of energy infrastructure in Urzut is the implementation of an energy storage system. This solution makes it possible to store surplus energy and use it at night, when energy is not being generated, or during periods of increased demand.

As a result, we increase energy self-consumption, reduce losses, and minimize dependence on external suppliers. The installation of the energy storage system means that our Base in Urzut is gradually becoming a zero-energy building.

An integrated energy ecosystem

In 2026, we plan to further develop the system by integrating additional infrastructure elements: a heat pump as the main source of heating, and systems that reduce heat loss (an automatic gate drive and air curtains). This approach enables full utilization of energy generated on-site—without the need to feed it back into the grid.

Environmental and economic benefits

The implemented solutions translate into tangible benefits. We estimate that an energy storage system with a capacity of 140 kWh will generate savings of nearly €10,000 per year. At the same time, the entire system contributes to further CO₂ emission reductions—by an additional 21 tonnes annually, bringing the total to 130 tonnes per year, with the potential to reach as much as 210 tonnes over the next decade.

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