This 18-day period broke the previous UK record, which was set on June 4, 2019, partly due to the collapse in electricity demand during the shutdown of the coronavirus and due to use increased solar energy.
The UK set a new solar record on April 20 after solar parks generated more than 9.6 GW of electricity for the first time.
The foreclosure has also resulted in a record drop in demand for electricity in the UK due to the closure of schools, shops, factories and restaurants.
On Monday, demand is expected to drop nearly a fifth below usual levels in April, according to the data. The lower overall demand for electricity means that low carbon energy sources can make up a higher proportion of the energy system than usual.
This month, National Grid said it may be necessary to close wind farms and some power plants to avoid overloading the power grid.
The new charcoal-free record comes almost three years after the first use of the charcoal-free network for 24 hours.
Since then, all but four coal-fired power plants in the UK have shut down before the government-wide ban on coal production from 2025.
Coal made up just 2.1% of the country’s total energy mix last year, a dramatic drop from nearly a quarter four years ago.
The collapse of coal and the increase in renewable energy sources have led to a drastic reduction in carbon emissions from the UK electricity sector. Since 2012, the average carbon intensity of the network – the amount of emissions required to produce one kilowatt-hour of energy – has decreased by more than two thirds, from 507 g of CO2 at 161g.