Hydrogen is a storage device, but compressed air has a higher efficiency rate (70% vs 50%) (source, various Chinese research papers on storing solar, wind, hydro, and geothermal energy)
Hydrogenics Corporation, a leading developer and manufacturer of hydrogen generation and hydrogen-based power modules, has announced it has been awarded a one megawatt hydrogen energy storage system to be deployed in the City of Hamburg, Germany.
(Oysters only do that in certain months, coal trains do it 24/7/365)
If you don't want coal, fight for hydrogen.
http://www.gasworld.com/news/regions/wes…