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ECEM : European Climatic Energy Mixes


European Climatic Energy Mixes (ECEM) is a Copernicus Climate Change Services Project (C3S) developing, in close collaboration with the energy sector, a proof-of-concept model – or demonstrator. Its purpose is to enable the energy industry and policy makers to assess how well energy supply meets demand in Europe over different time horizons, focusing on the role climate has on energy supply and demand.

The energy sector is undergoing a major transformation. The established model of traditional thermal power plants providing most of the ‘firm’ power to match a variable demand is being challenged by the steadily increasing share of power supply from variable renewable energy (RE) sources, such as wind and solar. Demand variability is also increasing as a result of the widespread use of embedded small-scale generation (e.g., rooftop solar) and air-conditioning, and can further change in response to price signals, and to an ever-changing climate. At the same time, the cost of batteries has started to noticeably decrease, making electrical storage increasingly economically viable.

Energy companies and operators, such as TSOs, and energy policy makers benefit from the co-designed climate service demonstrator as it includes a set of tools for better assessing energy mix options over Europe. Importantly, the demonstrator aims to:

  • Ensure that the country energy mixes properly reflect climate conditions including their variability, and it therefore allows end-users to better assess the optimal supply mix that can meet demand in the most cost effective manner;
  • Offer a coherent approach for the climate variables/indicators used in power demand/supply balance, an added value with respect to current practice in the sector, where climate data and derived ESCIIs are not always physically homogeneous and/or in balance.


This transformation in the energy sector is taking place against a variable and changing climate. Given the weather-and climate-dependency of both renewable energy and demand (even in the case of large storage uptake), it is important to develop this robust climate-based tool to advise energy planners and policy makers.

Project information

University of East Anglia

Electricité De France (EDF, France), the Met Office (UK), ARMINES (France), the University of Reading (UK) and the Agency for new technologies, energy and sustainable development (ENEA, Italy)

Source of funding

Reference information



climate services, energy mixes, renewable energy, transformation


2016 - 2017

Climate impacts

Extreme Temperatures, Storms


Sector Policies



Geographic characterization


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