Carbon intensity update for 16th Oct 25

UK Carbon Intensity Update for 16th October 2025: Understanding how our electricity is generated each day plays a key role in reducing our personal and collective carbon footprints. At Jaxi, we’re committed to helping consumers make informed decisions about when to use electricity based on carbon intensity levels. By strategically choosing when to run energy-hungry appliances, you can help lower the UK’s reliance on fossil fuels like coal during peak demand times.

Here’s a breakdown of yesterday’s carbon intensity levels across the UK, providing insights into the best and worst times for energy use:

Late Night to Early Morning (23:00 – 06:00)

The day began with high carbon intensity, ranging between 207 to 248 gCO₂/kWh. A noticeable peak occurred between 05:00 and 06:30, reaching up to 248 gCO₂/kWh. This indicates an increased reliance on fossil fuel-based generation sources during early morning hours.

Morning to Early Afternoon (06:30 – 14:00)

The carbon intensity remained elevated, though with a minor dip. Emissions dropped slightly to 244 gCO₂/kWh around 08:00, and the lowest point for this period was recorded at 230 gCO₂/kWh around 09:30. Although slightly better, these values still fall within the high emission range, suggesting that renewables were not meeting full demand.

Afternoon Peak (15:30 – 19:30)

This was the most carbon-intensive period of the day. Intensity surged to a “very high” rating, reaching values between 250 and 266 gCO₂/kWh. The demand on the grid during this time likely exceeded the capacity of renewable sources, leading to increased burning of fossil fuels such as coal or gas.

Evening Decline (20:00 – 23:00)

Carbon intensity began to decline gradually after 20:00, dropping to values between 222 and 246 gCO₂/kWh. Despite the decrease, emissions remained within the high range, highlighting the ongoing strain on clean energy sources throughout the night.

Why Carbon Intensity Matters

Carbon intensity reflects how much carbon dioxide is emitted to produce one kilowatt-hour of electricity. As demand rises, especially during peak times, the National Grid may need to rely on fossil fuels, pushing up CO₂ levels. By adjusting appliance usage to lower intensity periods — such as mid-morning or late evening — households can significantly reduce their environmental impact.

At Jaxi, we believe that informed energy use is a crucial step toward a more sustainable future. Keep checking our daily updates to plan smarter, greener energy usage and help cut down unnecessary emissions.

Want to stay ahead with real-time carbon intensity alerts and smart energy tips? Visit Jaxi.co.uk and start making cleaner energy choices today.