In general

SEAS-NVE will, in cooperation with DTU Energi, Aarhus University’s Geoscience, Dansk Energi, Energinet.dk and Rockwool, attempt to provide a groundbreaking solution to saving energy from renewable energy sources for future use in the next few years. The project will store energy from renewable sources for future use. The type of energy storage the project is working on is high temperature, thermal storage of energy. Thermal energy is generally called heat energy in everyday speech. By developing high temperature thermal storage, whereby energy is stored in rock heated to 600 degrees with air, the goal is to save energy from renewable energy sources, such as solar and wind, for several days and up to one week. Very simply put, the project is based on:

  1. Building a warehouse and testing whether it can hold the heat, and not least, redeploy it with the correct speed and quantities, so that the energy can be reused.
  2. Examining the market and our tax structure – when and how often will such storage be needed and, because current legislation is not intended for storage – how will our taxes on energy affect storage.

Helping solve Denmark’s future energy challenges in as CO2-neutral way as possible.

In the pilot phase, the energy storage facility is located at DTU Risø Campus. If the test results are positive, the project will enter a demonstration phase (from 2020 to 2024), where the project will be tested on a larger scale. It is not yet planned where the “real” full-scale warehouse will be located, but it is expected to be in Region Zealand if the market develops as expected.

It’s still too early to say anything about how it will look. In scale, it will be a building similar to IKEA or Netto’s central warehouse in Køge – but even bigger. In principle, the storage can be dug down to a groundwater table, and earthworks can be laid over it. So it may look like an ordinary hill that you can walk and stand on, with no disadvantage to the surrounding residents.

No, it is not dangerous. 600 degree heat can be dangerous, but the project will be secured so that no one can come into direct contact with the 600 degree hot air.

It is too early to answer, but the goal is for the energy storage to be as environmentally friendly and cheap as possible. By using known technology and rock rather than animals, advanced technology and chemical compounds, it will be both economically and environmentally beneficial.

The storage is a large-scale plant based on economies of scale, so it will not be possible to buy energy storage for private use.

Yes, at this point in time we are looking at familiar rock types, such as basalt, which you might have in their driveway. However, the final choice of material is something we will investigate with the geologists from Aarhus University during the project.

SEAS-NVE’s role

SEAS-NVE sees a social and commercial opportunity in the project, which will benefit our shareholders and customers in the long term.

SEAS-NVE will always be committed to saving energy.

It will not affect your electricity bill. The entire budget for the project is under SEAS-NVE’s development department and will therefore have no impact on your electricity bill. The pilot phase itself is funded by public finances from the Energy Technology Development and Demonstration Programme (EUDP), which accounts for 70 percent of the total budget for the entire pilot phase of the project.