Cross-sectoral energy storage - concept development, demonstration and evaluation

Project management:

 

Jelto Lange, M.Sc.

Prof. Dr.-Ing. Martin Kaltschmitt

Funding: Stiftung Energieforschung Baden-W├╝rttemberg
Project volume:4 years
Project term:10/2016 - 10/2020

The share of fluctuating power production from wind and photovoltaics in total power generation has increased significantly and will continue to rise. Thus, the need to implement measures for ensuring a safe, cost-effective and environmentally sustainable energy supply, despite increasing fluctuations, becomes increasingly apparent.

Against this background, the aim of the project is to investigate a cross-sectoral storage option in detail and, on the basis of this, to identify existing storage concepts and the resulting business models, demonstrate these in cooperation with an energy supplier that supplies end customers, and evaluate them based on the results of the demonstration.

The storage concept envisages the implementation of heating cartridges in existing heating systems of private households in order to be able to switch between heating with electricity and natural gas. By operating the electric heating cartridges in times, when the power production based on fluctuating renewable energies would otherwise surpass the demand for electricity, natural gas can be substituted by otherwise unused renewable energy. By reconversion of the substituted, easily storable natural gas, as soon as the demand for electric energy again exceeds the electricity supply from renewable energies, the overall concept represents a possibility of energy storage. The goal is, to supply system services and improve the integration of renewable energies by decentrally and intelligently coordinating a large number of such systems.

Therefore, within the framework of the project, the described concept should be analyzed in detail and tested in a demonstration. The results of the demonstration will then be used for a comprehensive concept assessment.