Hydrogen has been produced with electricity from Renewables and it has been used as a storage medium. Now when needed by demand unable to be satisfied from intermittent Renewables, it needs to be used to produce energy. Several ways are possible or under development: 1.Hydrogen Fuel Cells 2.Internal Combustion Engine driven generators 3.Hydrogen Combustion Turbine driven generators.
Hydrogen Fuel Cells can be assumed for use in typical commercial and industrial applications until such time as other technologies become more commonly deployed. The assumed facility could have a modular series of stacks for Hydrogen production, storage, and energy production. With Renewables producing the initial energy, these Hydrogen solutions would ensure the complete facility would be 100% RE during intermittencies.