The objective of this report is to provide recommendations for long-term R&D priorities for crosscutting EC funded projects in the energy domain. Nineteen JRC experts analysed synergies and issues of the future energy system in following areas:
* objectives of Horizon 2020 projects were compared with national and international projects;
* key energy technologies for a cost-effective energy transition using the energy system model JRC-EU-TIMES;
* development trends of LCEO technologies with regard to their potential to provide grid support services; and
* R&D synergies between LCEO technologies to accelerate development and use research budgets efficiently.JRC.C.7-Knowledge for the Energy Unio