Carbon intensity update for 11th Sep 25

UK Carbon Intensity Update – 11th September 2025

On Thursday, 11th September 2025, the UK experienced consistently low carbon intensity levels throughout the day – a positive sign for sustainability and cleaner energy usage. Monitoring carbon intensity is key to understanding when the electricity supply is greener or more polluting, enabling households and businesses to plan their energy use accordingly. At Jaxi, we make this information accessible so you can make smarter, eco-friendly decisions about when to run appliances.

Here’s a breakdown of the day’s carbon intensity highlights:

• 00:00 to 01:00: Forecasted between 53–56 gCO₂/kWh, with actual levels slightly lower at around 51–52 gCO₂/kWh.
• 06:00 to 07:00: A morning peak was recorded, with carbon intensity reaching 71–73 gCO₂/kWh.
• 09:30 to 12:30: The cleanest part of the day, with forecasted values between 32–36 gCO₂/kWh, closely matching actual readings.
• 18:00: Carbon intensity rose again briefly, hitting up to 91 gCO₂/kWh due to increased demand.
• 22:00: Carbon levels returned to cleaner values, measuring around 50 gCO₂/kWh.

This data shows that carbon intensity fluctuates throughout the day depending on energy demand and the availability of renewable energy sources like wind and solar. When demand is high and renewables are insufficient, fossil fuels such as coal and gas are used to stabilise the grid, which increases carbon emissions.

By staying informed about carbon intensity, you can reduce your environmental impact by shifting energy-intensive tasks—like running washing machines or dishwashers—to times when carbon levels are lower. This small shift can help reduce reliance on fossil-fuel-based energy and support the UK’s transition to greener electricity.

At Jaxi, our mission is to empower you with real-time carbon intensity updates so you can make conscious choices that benefit both your wallet and the planet. Reducing overall carbon emissions contributes to cleaner air, a healthier environment, and a stronger fight against climate change.

Thank you for supporting a sustainable future. Keep checking back for daily updates and tips on how to use energy more responsibly. Together, we can build a greener world—one appliance at a time.