It's claimed the first "coal-free" day was achieved in the UK recently.
The National Grid has announced Britain’s first full day without coal power “since the Industrial Revolution”.
A combination of low demand for electricity and an abundance of wind meant the grid completed 24 hours relying on just gas, nuclear and renewables.
Engineers at the company said Friday marked a “historic” milestone in Britain’s shift away from carbon fuels, and that coal-free days would become increasingly common.
Use of the fossil fuel has significantly declined in recent years, accounting for just 9 per cent of electricity generation last year, down from 23 per cent in 2015, with the closure or conversion of coal plants.
The Government has pledged to phase out coal - the most polluting fossil fuel - from the system by 2025 as part of efforts to cut carbon emissions in the UK.
There's more at the link.
That's all very well . . . but it relies heavily on the right weather conditions to produce enough solar and wind power to make up for what coal-fired stations would have produced. It also relies on having enough nuclear power stations available to generate what's needed. With older British nuclear power stations being closed, that won't be the case for much longer - at least, not in the numbers needed.
I'll be watching this with interest. "Coal-free" days may be a Green's nirvana, but I suspect they won't be as practical as they hope.