The world’s first detailed route map to ending a nation’s use of fossil fuels is both “ambitious and affordable”, according to the UK government’s official advisers, and would see half of the cars on the road being electric by 2030 and 10,000 giant wind turbines in the North Sea. The Climate Change Committee’s analysis found that the future cost savings from no longer having to buy oil and gas almost offsets the £50bn-a-year investment needed in low-carbon power, transport and home heating across the next three decades. The eyes of the world are on the UK as it prepares to host a critical UN summit to tackle the climate crisis next November and UK leadership is considered vital for success. The prime minister, Boris Johnson, recently announced a green industrial revolution plan, but the CCC said further action was needed now from the government to set the UK on the path to ending emissions by 2050. The CCC route map forecast people’s energy bills remaining level, before falling after 2030 as cheap renewable energy expands. Electric cars will also save drivers money but a phase-out of gas boilers will mean some households will require government help to install more expensive…