In January 2018 metered wind power peaked at over 10 GW and contributed up to a peak of 42% of the UK's total electricity supply. In March, maximum wind power generation reached 14 GW, meaning nearly 37% of the nation's electricity was generated by wind power operating at over 70% capacity. On 5 December 2019, maximum wind power generation reached 15.6 GW. At around 2am on 1 July 2019, wind power was producing 50.64% of the electricity supply, perhaps the first time that over half of the UK's electricity was produced by wind, while at 2:00am on 8 February 2019, wind power was producing 56.05% of the electricity supply. Wind power first exceeded 16GW on 8 December 2019 during Storm Atiyah.