Hydrogen is an energy carrier, a fuel and a raw material, which if produced adequately can reduce GHG emissions, strengthen energy independence and mitigate the challenges posed by variability and intermittency of renewable energy systems as it offers a clean, sustainable, and flexible option to convert renewable electricity into a chemical energy carrier for use in mobility, heat and industrial applications. As the “gaseous form of electricity”, it is an enabler for sectoral integration.
Source: Hydrogen Council
"Sectoral integration means the integration of the power sector with the transport, the industry and the heating and cooling sectors via the use of all energy carriers such as electricity and hydrogen to achieve European climate and energy goals”
Renewable power generation is characterised by variability and intermittency. As the renewables’ penetration increases, the problem of balancing supply and demand for operators of electricity networks also rises. Periods of non-consumption-oriented production of renewable energy are usually managed by curtailing renewable power sources because the electricity cannot be sold at the time of generation. Hydrogen offers valuable advantages in this context, as it avoids CO2 and particles emission, can be deployed at large scale, and can be made available everywhere.
Sectoral Integration can be best illustrated using the following picture:
Sectoral Integration Rationale Hydrogen Europe download