Nuclear: Around 20% of our electricity is generated by nuclear reactors, where uranium atoms are split to create heat (known as nuclear fission). The nuclear power stations we have in the UK are due to be closed and several companies have plans for a new generation of reactors to be built from 2018 onwards.
Renewables: Renewable energy creation through wind farms, solar farms and wave power make up around 25% of our electricity. The EU have set targets of around 30% of electricity to be created through renewable sources by 2020.
Import: finally, we are connected to systems in France, the Netherlands and Ireland through interconnector cables. This allows us to import and export electricty when economical. Around 6% electricity was imported into the UK last year.