Letter: There seems to be little understanding of the simple fact that electric vehicles (EV) are, in the main, pollution shifters – from tailpipe to power generation facility (Ban from 2040 on diesel and petrol car sales, 26 July). The electricity generation and transmission system is already tested to its limits during a harsh winter. Only if objections disappeared to the mass building of thousands of the largest wind turbines, plus similar numbers of hectares of photovoltaic solar generation, could the pollution shifters’ argument be refuted. Even then, there would still be need for conventional or nuclear generation for when the sun doesn’t shine and wind doesn’t blow – doubling the capital requirement.
Guardian 30th July 2017 read more »
The UK government says it wants all new cars and taxis to be electric by 2040 and the doom-mongers have come out in force. They say that 100% EVs this will strain the UK capacity to produce electricity. This is not correct. Let’s put a few numbers around the question of how and when electric cars will take over from petrol and diesel and what the impact will be. Between now and 2030, the UK will add about 25 GW of offshore wind. Typically, these turbines will produce at about 50% capacity factor. (This is higher than 40%+ experienced at the moment as turbines get taller, more efficient and sited in higher wind locations). These turbines will thus produce about 110 TWh a year of electricity. Offshore wind load factors tend to be highest in winter, when power demand is also high. The annual electricity demand from 100% electric cars (75 TWh) will be just under about 2/3 of the amount of power produced by the offshore wind installed from now until 2030.
Carbon Commentary 26th July 2017 read more »