To ask the Secretary of State for Energy and Climate Change what assessment he has made of the potential contribution of guanidine to his Department's renewable energy strategy. (323017)

None. Guanidine is a potential chemical carrier for hydrogen—which can be used in modified internal combustion engines (ICEs), turbines or fuel cells. Guanidine is a solid at room temperature. Its advocates claim that this offers some advantages over the current methods for storing hydrogen as a compressed gas or cryogenic liquid.