What role does nuclear power play in UK and what are alternatives?

The options remaining, with three projects shelved and old plants reaching end of road

• Hitachi scraps 16bn nuclear power station in Wales
• Does Hitachi decision mean the end of UK's nuclear ambitions?

Britain's old nuclear power stations supply about a fifth of electricity supplies and are a key part of the energy system. However, their share of the mix has been gradually shrinking as renewables have grown and energy demand has fallen.