Biogas - a methane-rich fuel made from rotting food waste or sewage - has huge potential as a clean, green fuel for the UK. But a perverse web of subsidies, rules and contracts could mean UK councils are about to kiss goodbye to the real power of waste...
In the cut-throat world of clean energy investment, is it more important that things are done for the right reason, or that the right thing gets done? We may not like the answer...