Energy Storage Research

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Energy Storage Research – an International Comparison
Office of Technology Assessment at the German Parliament (TAB)


According to different frameworks and initial situations in existing energy systems Energy Storage Systems (ESS) are holding a different important role with respect to e.g. electricity load management or temporary storage of heat. Unquestionable, the importance of ESS to foster the operability of energy systems will increase with the transition (liberalisation, decentralisation, RES etc.) of the systems and the further implementation of volatile energy resources.

The study’s focus is to analyse and compare international research strategies in the field of energy storage in countries and regions with important research activities.

Energy storage serves the spatial and/or temporal uncoupling of energy availability and energy demand. ESS is used in multiple applications:

  • Traffic: e.g. battery systems, on-board H2 storage, flywheel, supercaps etc.
  • Electricity Grids (both integrated and isolated grids): e.g. battery systems, intermittent large scale renewable H2 production, pumped storage, compressed-air storage, SMES etc.
  • Heating and Cooling in Buildings (both local and district heating/ cooling & transport of heat storage media etc.): Underground Thermal Energy Storage, latent heat storage, thermo-chemical storage, long-term storage, large-scale storage etc.
  • Process Heat (both for low-temperature and high-temperature (incl. power generation) applications): thermal storage, thermo-chemical storage, system integration etc.

In the context of this study the focus is on storage systems, which have a high technical and economic relevance for the operability of the energy system such as frequency stabilisation, reduction of power failures, thermal storage or integration of fluctuating energy resources.

More information

Contact at IZT: Michael Knoll


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