This group covers R&D directed towards the transformation of energy resource minerals
into heat, steam or electricity; and the conversion of coal, natural gas, oil shale
and tar sands to liquid fuels. It includes hydrogen-based energy systems and fuel
cells.
a) Transformation of renewable energy resources into heat, steam or electricity is
included in Group 1708 Renewable energy. b) Engines for use in transport other than internal hydrogen combustion engines are
included in Group 2415 Transport equipment.