Energy storage

Flexibility is crucial for the future energy supply, which implies the ability to store energy. This is due to both shifting demand and fluctuating energy sources such as solar, wind, and surplus heat. Artelia has experience with multiple technologies in energy storage.

Thermal pit storage in Aarhus

Artelia has assisted Kredsløb in developing a preliminary project for the establishment of pit thermal storage at several locations within Aarhus Municipality. This involves a comprehensive assessment of feasibility, considering all planning, environmental, and technical factors, as well as an examination of the economic aspects through the calculation of both CAPEX and OPEX.

The purpose of the preliminary project was to provide Kredsløb with a solid basis for decision-making. Additionally, data and results from the preliminary project can be used to optimize the future configuration of the facility.

Client Kredsløb

Services Client consultancy, hydraulics, P&ID for the connection between storage and transmission network, thermohydraulic modeling for simulating the operation of the storage, geotechnics, and economic planning

26,000 m³ Accumulation Tank in China

At winter, temperatures are low in northern China. In the large cities, district heating networks have been established, but there is no tradition of building heat accumulation tanks. The Chinese have been inspired by countries like Denmark and have seen the benefits of establishing heat storage systems in terms of flexibility and supply security.

As consultant for FORCE Technology, Artelia has helped design a heat accumulation tank of 26,000 m³ in the city of Liaoyuan.

The tank can store and deliver 1188 MWh of heat.

Client FORCE Technology

Ydelser Design of steel for the tank’s shell, roof, and bottom considering earthquakes, pipe calculations, design of diffusers for water input and output, component list, I/O list, instruments, P&ID, heat loss calculation, and optimization of design through CFD modeling in collaboration with FORCE.

New Lid for Dronninglund’s Pit Thermal Storage

As client consultant for Dronninglund District Heating, Artelia assisted in replacing the insulated lid structure on the company’s pit thermal storage, which annually stores summer solar heat production and thereby ensures significant savings on heating bills for consumers. When the sun is available, the energy can be stored and then released at other times when production costs are high. Similarly, varying amounts of surplus heat can be stored and converted into district heating when needed.