Just six years ago, more than 40% of Britain’s electricity was generated by burning coal. Today, that figure is just 7%. Yet if the story of 2016 was the dramatic demise of coal and its replacement by natural gas, then 2017 was most definitely about the growth of wind power. Wind provided 15% of electricity in Britain last year (Northern Ireland shares an electricity system with the Republic and is calculated separately), up from 10% in 2016. This increase, a result of both more wind farms coming online and a windier year, helped further reduce coal use and also put a stop to the rise in natural gas generation. In October 2017, the combination of wind, solar and hydro generated a quarter of Britain’s electricity over the entire month, a new record helped by ex-hurricane Ophelia and storm Brian. Since that record month, large new offshore wind farms have started to come online. Dudgeon began generating off the Norfolk coast, as did Rampion, which can be seen from Brighton town centre. In all, Britain’s wind output increased by 14 terawatt hours between 2016 and 2017 – enough to power 4.5m homes. To give a sense of scale, this increase alone is more than the expected annual output from one of the two new nuclear reactors being built at Hinkley Point C. Not only is offshore wind growing fast, it is also getting much cheaper. When the latest round of government auctions for low-carbon electricity were awarded last year, two of the winning bids from offshore wind developers had a “strike price” of £57.50 per megawatt hour (MWh). This is considerably cheaper than the equivalent contract for Hinkley Point of £92.50/MWh (in 2012 prices).
The Conversation 5th Jan 2018 read more »