Rejlers wins assignment for Trelleborgs Energi on unique energy solution

Kuststad 2025 is a comprehensive urban development project in Trelleborg, where climate neutrality is one of the guiding principles. Trelleborgs Energi, with the support of the Swedish Energy Agency and together with Granitor and Serneke, will develop an innovative energy concept for the new district. The goal is to create a unique energy solution based on a combination of low-temperature district heating, solar cells, batteries and hydrogen storage. Rejlers has previously delivered a pre-study and is now also participating in the next step: a feasibility study for the project.

More than 7,000 homes will be built, and major investments are being made in business and infrastructure in Trelleborg's largest urban development project ever - Kuststad 2025. The goal is to make the sea accessible, while creating a modern and completely climate-neutral district.

In the first phase of the project, Västra Sjöstaden, in a property jointly owned by Granitor and Serneke, a unique energy concept is planned that is based on balancing and optimizing different types of power and energy sources. The energy system consists of several parts: electricity production with solar cells, energy storage in battery storage and local hydrogen production where the generated residual heat is utilized in a new low-temperature district heating network.

Rejlers has previously supported the project partners in the development of a pre-study with an overall risk analysis. The project is now entering the next stage, a feasibility study, which will be completed in the first half of 2024 and form the basis for future investment decisions and permit processes.

The study will include an in-depth risk analysis and places great emphasis on optimising control systems, investigating energy balancing and possible business models. The study also includes the development of a comprehensive system solution for the local district heating network.

"This project is a good example of how to combine new technologies to create sustainable societal values. Here, we will concretize an innovative, robust and flexible energy solution that not only has zero emissions but also increases the degree of self-sufficiency in the city," says Magnus Sahlin, CEO of Trelleborgs Energi. 

"We are pleased to be involved in driving this unique initiative forward, as it provides the opportunity to explore and realize the potential of cross-sectoral collaborations. The vision is to create an energy system in micro format that reflects the connections between different energy sectors. By integrating and optimising these connections, we can take a big step forward towards creating a more efficient and sustainable energy system for the future," says Ulrik Björk, Business Area Manager at Rejlers' Energy Division.

"Trelleborg is at the forefront when it comes to locally produced green energy. They are part of the Nordic hydrogen corridor and the investment that is now being made in Kuststad 2025 is exactly the type of initiative that is required for Sweden to cope with the energy transition," says Malin Ljung Eiborn, Sustainability Director at Rejlers.

The new district of Västra Sjöstaden in Trelleborg comprises approximately 1,800 new homes, two preschools and commercial space. The first block is scheduled for occupancy at the turn of the year 2025/26.   

For further information, please contact:
Sara Kimell, Head of division Energy, Rejlers Sweden, +46 70 144 38 99,
Malin Sparf Rydberg, Director of Communications, Rejlers Group, +46 70 477 17 00,
Magnus Sahlin, CEO Trelleborgs Energi, +46 734 42 25 73,

About Rejlers
Rejlers is one of the leading engineering consultancy firms in the Nordic region. With cutting-edge expertise, we help companies, public authorities and other organisations meet tomorrow's societal challenges. Our services are important building blocks for achieving a sustainable society. Founded in 1942, Rejlers success is built on the ability to constantly embrace new knowledge. Our vision "Home of the learning minds" guides us to continuous learning, development and growth. With operations in Sweden, Finland, Norway and the United Arab Emirates, Rejlers has around 3300 experts in technology areas such as energy, industry, infrastructure and real estate. In 2022, the company had a turnover of 3.5 billion SEK and its class B share is listed on Mid Cap, Nasdaq Stockholm.

About Trelleborgs Energi
Trelleborgs Energi is a local energy company, based in Sweden's southernmost municipality. Our mission is to actively drive the transition to a safe and fossil-free Trelleborg. Our business includes the delivery of a reliable and secure electricity grid as well as the offer of fossil-free district heating and electricity to our customers. We are also developing new, sustainable energy solutions, for example in hydrogen. All for our future generations.