Press Association: The Government today signalled the go-ahead for a new generation of coal-fired power stations – but insisted they would be made to reduce their carbon emissions. Energy Secretary Ed Miliband said up to four new coal plants could be built before 2020, which he said was “important for our energy mix”. But he said at least a portion of each new power station must be fitted with the technology to trap and store their carbon dioxide underground. His announcement to MPs …