On 14 April 2021 The Guardian reported that Great Britain's electricity system recorded its greenest ever day over the Easter bank holiday as sunshine and windy weather led to a surge in renewable energy. The power plants generating electricity in England, Scotland and Wales produced only 39g of carbon dioxide for every kilowatt-hour of electricity on Easter Monday, according to National Grid's electricity system operator, the lowest carbon intensity recorded since National Grid records began in 1935.