The UK has gone six weeks without any coal - fired energy generation , with energy prices falling dramatically as a result . There were more electricity - free prices in early 2019 than all of 2017 , with average prices for each week falling YoY from £ 57.6 ( $ 72.9)/MWh to £ 28 / MWh . May also saw the longest recorded period of negative pricing , with average wholesale prices falling to around -£12 / MWh during an 11-hour period . The prices , described as " extraordinary " by one energy company , meant that the UK 's average wholesale intensity fell to 179 g CO2 / kWh , with the country aiming to reduce the figure to 100 g CO2 / kWh by 2032 .
The UK has gone two weeks without any coal-fired energy generation, with energy prices falling dramatically as a result. There were more coal-free hours in May 2019 than all of 2017, with average prices for one week falling YoY from £57.6 ($72.9)/MWh to £28/MWh. May also saw the longest recorded period of negative pricing, with average wholesale prices falling to around -£12/MWh during an 11-hour period. The decline, described as "extraordinary" by one energy company, meant that the UK's average carbon intensity fell to 179g CO2/kWh, with the country aiming to reduce the figure to 100g CO2/kWh by 2032.