The Nikkei reports that Fuji Electric Co. is marketing a fuel cell power plant that can run on either city gas (predominantly methane) or propane. This is to allow the unit to operate as a reliable power supply for hospitals, even if the supply of gas from the grid is interrupted. Switching from one gas to the other can be done in around 30 seconds.
Fuji Electric manufactures an in-house 100 kW phosphoric acid fuel cell system. It has sold a number of units in Japan to date and this year started marketing its system in Europe. Earlier this year, it also supplied a unit for a smart grid demonstration project in the USA.