Carbon intensity update for 22nd Sep 25

Stay informed to make smarter, greener energy choices. At Jaxi, we’re committed to helping our users reduce their carbon footprint by tracking and sharing the UK’s daily carbon intensity. Here’s your update for 22nd September 2025.

Today’s carbon intensity levels across the UK varied from low to high depending on the time of day, reflecting changing electricity demand and energy source availability. Understanding these fluctuations enables households to better plan when to use appliances to minimize environmental impact.

Carbon Intensity Breakdown – 22nd Sep 2025

• 00:00 – 05:00: Carbon intensity remained consistently low, ranging between 74 – 115 gCO₂/kWh. This was an ideal time to run energy-intensive appliances such as washing machines or EV chargers.
• 05:00 – 09:00: A moderate rise in carbon emissions was observed, with a peak of 155 gCO₂/kWh at 07:00. Morning demand typically rises as people prepare for the day, leading to increased fossil fuel generation.
• 09:00 – 14:30: Emissions dipped again into the low range, making mid-morning to early afternoon a cleaner window for energy use.
• 15:00 – 20:30: As evening demand surged, carbon intensity rose into the moderate to high range, peaking at 192 gCO₂/kWh at 18:00. This is due to a drop in renewable output and increased reliance on non-renewable sources like coal and gas to meet high demand.
• After 20:30: Emissions gradually declined, returning to moderate levels by the end of the day.

What Does This Mean for You?

Electricity isn’t always equally green. When demand spikes and renewable energy can’t meet the needs, fossil fuel-based generators step in — increasing greenhouse gas emissions. By shifting energy consumption to times of lower carbon intensity, you play a direct role in reducing the UK’s overall environmental impact.

Using tools like Jaxi to track real-time carbon intensity helps you make eco-conscious decisions, such as scheduling appliances or charging devices when the grid is cleanest.

Why Time-of-Use Matters

Choosing off-peak times with lower carbon intensity not only supports environmental sustainability but can also lower energy bills, especially under variable pricing models. Being energy smart means being climate smart.

Check back daily for carbon intensity updates and insights to help you live more sustainably while staying informed about the real-time climate impact of your energy consumption.

Let’s power the future responsibly — one appliance at a time.