In Dagebüll, Germany, INVADE will integrate the various assets such as renewable energy sources (wind energy, PV plants, biomass), batteries at both community and household levels within the existing infrastructure, and ICT tools at the pilot site.
The application of energy storages in private households creates direct experience relevant for the possibility of integrating storages in Germany. This promotes acceptance and proves the benefit of demand-response in private households. Increasing self-consumption ratios and reducing costs is an important goal for private households. There will be at least 10 private households with individual battery capacity of 10 kWh engaged in the pilot site.
The village of Dagebüll located in Schleswig-Holstein has about 900 inhabitants. Thanks to its excellent position in Northern Frisia its wind production exceeds the local consumption considerably. This overshoot becomes more and more a problem, because wind farms need to be run down (up to 40%) due to the overload of the local grid.
Bigger storage capacities of about 100kWh can be useful. Although that does not allow bridging lack of wind, but enables balanced production, in order to fulfil the production forecasts. Balance energy is not wasted, but optimised, allowing forecasts from 15 up to 60 minutes. This can reduce electricity production costs considerably for the benefit of the wind turbine operator. There are general investor’s scenarios to install these devices, which are still quite expensive.
INVADE could be the first step to implement parts of this scenario. Furthermore, the good local community cooperation makes the incorporation of several private households more likely. Smaller storage capacities (around 10kWh) for private households, may be connected to a bigger electricity storage. We also aim to incorporate the PV and biomass plants available into INVADE.
In addition to the mentioned technical challenges, Dagebüll aims to create charging points for E-vehicles and E-bikes within the frame of a “green energy label”, which would contribute to the overall INVADE concept implementation.
Stakeholders involved are AUKOS GmbH and ABE group. The INVADE project will also involve the local utility and the DSO associated in the project. They have the following goals:
- Contribution to grid stability
- Reducing grid operating cost
- Participating on technology development
The project plans to incorporate local authorities in order to increase acceptance and political importance. INVADE may work as a sample project for the community and can be seen as a first step to increase the ratio of locally consumed energy supporting local added values.