According to data from National Grid, 48 percent of Britain's electricity generation between January - May 2019 was from zero-carbon sources.
This includes imports (six percent), nuclear energy (18 percent), and renewable energy (24 percent).
While only three percent came from coal - a 27 percent decrease in the past decade - and 41 percent from gas.
National Grid also claims that wind power has drastically increased from one percent to 19 percent.
'A key milestone'
CEO of National Grid, John Pettigrew, told BBC News: "Over the last 10 years there's been real progress in de-carbonization of the energy system – but 2019 is going to be a key milestone.
"It's the first time since the Industrial Revolution that more electricity has been produced from zero and low-carbon sources rather than fossil fuels. It's tremendously exciting because it's such a tipping point."
Earlier this year, Ecotricity became the first vegan energy company in the UK - after it received approval from the Vegan society.
The organization creates electricity from the wind and sun, and produces gas from frack-free gas mills - dubbing itself as 'Britain's greenest energy company'.