You can add 5% hydrogen to the natural gas in the german grid at the moment without changing much infrastructure, up to 15% in the medium term. Here is a pilot

You can add 5% hydrogen to the natural gas in the german grid at the moment without changing much infrastructure, up to 15% in the medium term. Here is a pilot project: http://www.eon.com/en/media/news/press-releases/2013/6/13/power-to-gas-unit-injects-hydrogen-into-natural-gas-system-for-f.html http://www.eon.com/en/media/news/press-releases/2013/6/13/po...