Britain has broken its record for the longest continuous period without generating electricity from coal.
National Grid said that the coal-free period lasted more than 90 hours before coming to an end on Monday afternoon.
It is the longest period since the industrial revolution and breaks the previous record set in April 2018 of 76 hours and 10 minutes.
The government plans to phase out Britain's last coal power plants by 2025 to cut greenhouse gases.
Duncan Burt, director of operations at National Grid, told BBC Radio 5 Live it was "a really big deal".
Image copyright PA Image caption The sunny weather has led to low energy demand and a boost in solar power.
The 2008 Climate Change Act requires greenhouse gas emissions to be reduced by 80% compared with 1990 levels by 2050. »