The country's energy security is an issue the winning party have have to address after the general election, as is the requirement to decarbonise the economy, as Julian Rush writes.
Say energy to most people - and most politicians - and they'll talk to you about electricity. In fact, electricity generation, using gas, coal, nuclear and renewables, accounts for only a third of Britain's energy use, with another third taken by heating homes and offices and by industrial processes, mainly using gas, and another third by transport, almost exclusively from oil.