Carbon intensity update for 29th Oct 25

Stay informed with Jaxi’s daily carbon intensity update for the UK – helping you make smarter, more sustainable energy choices every day.

On 29th October 2025, the UK experienced varying levels of carbon intensity throughout the day. Monitoring carbon intensity is crucial for anyone looking to reduce their environmental impact by using energy when it’s generated from cleaner sources. This allows households and businesses to plan activities like charging electric vehicles, running washing machines, or using heating systems at times when electricity comes from greener power sources.

Carbon Intensity Overview for 29/10/2025:

🔹 Low Intensity Periods (00:00 – 06:30 and 22:00 – 00:00)

• During the early hours of the morning, carbon intensity remained low, ranging between 48 and 81 gCO₂/kWh.
• Late evening also saw a dip in intensity, with levels as low as 85 gCO₂/kWh by midnight.

These windows represent the best times to use energy-intensive appliances, as electricity generation relied more heavily on renewable sources like wind and hydro power.

🔸 Moderate Intensity Periods (06:30 – 15:30 and 19:30 – 22:00)

• As the morning progressed, demand increased slightly, causing a moderate rise in carbon intensity with values peaking at 154 gCO₂/kWh.
• From 19:30, there was a slight reduction in emissions, returning to moderate levels as more low-carbon sources came back online.

These periods are a good middle-ground for energy use—less clean than overnight, but still relatively efficient in terms of CO₂ emissions.

🔺 High Intensity Period (15:30 – 19:00)

• The most carbon-intensive period occurred between mid-afternoon and early evening when demand peaked sharply.
• Carbon intensity rose to nearly 203 gCO₂/kWh, likely due to the activation of fossil fuel-based generators such as coal or gas plants to meet demand.

Try to avoid heavy energy use during this time, as electricity production relies more on higher-emission sources, contributing to increased carbon output.

Why Carbon Intensity Matters

Understanding and responding to carbon intensity data helps reduce collective CO₂ emissions. When demand exceeds what renewables can supply, the grid depends on polluting backup sources. By shifting your electricity usage to low-intensity periods, you not only save money where time-of-use tariffs apply, but you also contribute to a greener future.

At Jaxi, we’re committed to providing accurate, up-to-date carbon intensity insights so you can take control of your consumption habits. Together, we can build a more sustainable, low-carbon UK.

Check back every day for the latest carbon intensity updates and keep making smart choices for the planet.