Carbon intensity update for 5th Sep 25

UK Carbon Intensity Update for 5th September 2025

Keeping track of the UK’s electricity carbon intensity helps us all make smarter, more sustainable energy choices. At Jaxi, we monitor real-time and forecasted carbon intensity levels to help you decide the best times to use energy-heavy appliances.

When electricity demand increases—especially during peak hours—and renewable sources like wind and solar can’t meet that demand, fossil fuels such as coal must be used to generate electricity. This leads to higher carbon emissions. By being aware of daily carbon intensity fluctuations, you can reduce your environmental impact while potentially saving money on energy bills.

📅 Carbon Intensity Data: 4th–5th September 2025

• 4th Sept, 23:00 – 5th Sept, 01:30: Forecast: Moderate (105–116) | Actual: Moderate (102–112)
• 5th Sept, 01:30 – 03:30: Forecast: 105–107 | Actual: Moderate, dipping to Low at 03:00 (101–114)
• 5th Sept, 03:30 – 08:00: Forecast: 108–155 | Actual: Moderate, rising to 161 (114–161)
• 5th Sept, 08:00 – 17:00: Forecast: 95–174 | Actual: Mostly Moderate, peaking High late afternoon (98–186)
• 5th Sept, 17:00 – 21:30: Forecast: High (201–219) | Actual: High (198–205)
• 5th Sept, 21:30 – 23:00: Forecast: Decreasing (184–198) | Actual: Moderate (155–179)

🔎 Why Carbon Intensity Insights Matter

Carbon intensity measures how much carbon dioxide is produced per unit of electricity consumed. On days when intensity is low, more electricity comes from renewable sources. High intensity levels typically indicate greater reliance on fossil fuels like coal or gas.

By avoiding high-carbon periods, you can help reduce national greenhouse gas emissions. Small actions like running the dishwasher or doing laundry during off-peak, low-intensity hours can make a meaningful difference.

🌱 Eco-Friendly Energy Planning Tips

• Use appliances during forecasted low or moderate carbon intensity periods.
• Enable smart home devices that respond to real-time energy data.
• Stay informed with daily updates from Jaxi to optimise your energy usage.

Together, we can support a cleaner, greener energy grid for the future. Monitor carbon intensity with us and take control of your environmental impact—one switch at a time.

Stay updated with our carbon intensity reports at jaxi.co.uk.