Carbon intensity update for 24th Sep 25

Stay Informed with Jaxi: UK Carbon Intensity Update for 24th September 2025

At Jaxi, we believe that understanding the carbon intensity of electricity is key to making smarter, eco-conscious decisions. By knowing when the grid is powered by cleaner energy sources, you can choose the best time to run your appliances and reduce your carbon footprint effectively.

Here’s a detailed breakdown of the UK’s carbon intensity throughout the day on 24th September 2025, measured in grams of CO₂ emitted per kilowatt-hour (gCO2/kWh):

• Late Night (23:00 – 01:30): Moderate carbon intensity levels were recorded, ranging from 159 to 163 gCO2/kWh.
• Early Morning (01:30 – 04:30): Levels remained moderate, peaking at 176 gCO2/kWh towards the end of this period.
• Morning Rush (04:30 – 08:00): Carbon intensity rose to high levels, reaching a peak of 195 gCO2/kWh around 06:00 due to increased demand.
• Mid-Morning (08:00 – 12:00): Carbon emissions decreased steadily, returning to moderate values with lows of 121 gCO2/kWh.
• Afternoon (12:00 – 16:00): Energy demand stabilised and carbon intensity stayed moderate with slight fluctuations.
• Evening Peak (16:00 – 20:00): Another surge in energy use caused a return to high levels, hitting up to 195 gCO2/kWh.
• Late Evening (20:00 – 23:00): Emissions began to drop again, ending the day at a much improved 129 gCO2/kWh.

Carbon intensity reflects how much carbon dioxide is released during electricity generation. Higher values often occur when fossil fuels like coal or gas are used to meet demand, especially when renewable sources such as wind or solar can’t keep up. By aligning your energy usage with periods of lower intensity, you contribute to a greener energy future and help reduce stress on the grid.

To make the biggest environmental impact, consider running energy-intensive appliances—like washing machines, dryers, and dishwashers—during periods of low or moderate carbon intensity. Small changes like these can create big wins for the planet.

Looking for more ways to reduce your household’s energy emissions? Keep checking back at Jaxi for carbon intensity updates, tips on efficient energy use, and insights into how the UK’s electricity grid is performing.

Every choice matters. Together, we can power a cleaner tomorrow.

Data Source: Carbon Intensity API