| MULTIPLY | EUROPEAN | GUIDELINES |
| Renewable energy sources like PV and wind turbines have a less stable energy output than conventional sources. When renewables will become more dominant, energy storage will become an important element of an energy system. Cities have proposed solutions to address this but most are in an idea phase and lack implementation. Further research is needed in order to be able to implement these solutions. | |
| ENERGY PRODUCTION AND NETWORKS // STORAGE | |
HYDROGEN
Long term storage and industrial use
