Carbon intensity update for 18th Oct 25

Stay informed about the UK’s carbon intensity trends to make smarter, eco-friendly energy choices! At Jaxi, we help you track when electricity is cleaner so you can reduce your carbon footprint by using high-powered appliances during greener periods.

On October 18, 2025, the UK’s carbon intensity fluctuated throughout the day, highlighting the importance of choosing optimal consumption times. Here’s a detailed look at how the day unfolded:

📈 High Carbon Intensity Periods

• 23:00 – 01:00: The day kicked off with elevated carbon levels ranging from 192 to 185 gCO₂/kWh.
• 05:00 – 06:00: A second peak occurred early in the morning, with emissions between 183 and 181 gCO₂/kWh.

During these hours, traditional fossil fuel generators—such as coal-fired plants—are often used to meet excess demand, driving up carbon emissions significantly.

🔄 Transition to Moderate Intensity

• 01:00 – 05:00 and 06:00 – 19:00: The grid entered a more moderate phase, with decreasing but still notable carbon output. While not ideal, these hours present a better opportunity for energy use than high-intensity periods.

Electricity during these times is likely produced from a mixed energy portfolio, including natural gas and some renewables. Energy-conscious users may consider lighter tasks during this window.

✅ Optimal Low Intensity Hours

The best time to use electricity came later in the day as renewable energy sources gained prominence:

• 19:30 – 20:00: Carbon intensity dropped to just 97 gCO₂/kWh.
• 20:00 – 22:30: Continued to fall steadily from 81 down to 61 gCO₂/kWh.

This period offers the greenest window for running washing machines, dishwashers, charging electric vehicles or scheduling other high-energy devices. Aligning your consumption with these hours helps reduce dependence on fossil fuels and supports a cleaner grid.

Why Carbon Intensity Matters

When electricity demand is high and renewable resources are insufficient, traditional power stations step in—often burning fossil fuels like coal or gas. This process spikes carbon intensity and contributes to climate change. By adjusting your usage to low-carbon periods, you directly support a sustainable energy future.

Smart energy habits make a real difference. Jaxi is here to guide you, every day. Stay tuned to our daily updates so you’ll always know the greenest times to power your home.

Together, we can shift towards a cleaner, more sustainable UK with informed choices and smarter consumption.