Carbon intensity update for 4th Oct 25

On October 4, 2025, the UK experienced varied levels of carbon intensity throughout the day, reflecting the mix of energy sources used to generate electricity. Monitoring and responding to carbon intensity is crucial to reducing our collective carbon footprint and optimising energy efficiency at home.

What is Carbon Intensity?
Carbon intensity measures the amount of carbon dioxide (CO₂) emitted for every kilowatt-hour (kWh) of electricity consumed. Lower values mean cleaner energy generation, often from renewables like wind, solar, or hydro, while higher numbers indicate fossil fuel usage such as coal or gas. By tracking these fluctuations, you can schedule high-energy appliances—like washing machines or dishwashers—when the grid is greener, contributing to a more sustainable lifestyle.

Carbon Intensity Report for 4th October 2025:

• 23:00 (Oct 3) – 01:00: Actual emissions slightly exceeded forecasts, peaking at 72 gCO₂/kWh.
• 02:00 – 05:00: Emissions remained steady but above expected levels, reaching up to 73 gCO₂/kWh.
• 06:00: A noticeable rise occurred, registering 79 gCO₂/kWh compared to the forecasted 53 gCO₂/kWh.
• Throughout the day: Carbon intensity stayed within the low index category, showing cleaner energy generation during daylight hours.
• 14:30 – 17:00: The cleanest period of the day, with intensity dropping to 49 gCO₂/kWh.
• 17:00 – 23:00: Emissions stabilised between 52 and 64 gCO₂/kWh, still maintaining relatively low levels.

Why This Matters
At times of high electricity demand—especially in the early morning and evening—the grid may rely on fossil fuel-generated power when renewable sources aren’t sufficient. These periods usually correspond with higher carbon intensity. By aligning your household energy use with lower-carbon times, you can help reduce pressure on the grid and lower greenhouse gas emissions.

How Jaxi Helps You Make Greener Energy Choices
At Jaxi, we’re committed to empowering users with real-time carbon intensity updates. Our tools help you make informed decisions about the best times to use electricity, helping you save money and reduce your environmental impact. Together, we can make meaningful steps towards a zero-carbon future.

Stay tuned for daily updates on UK carbon intensity and make energy-conscious choices that benefit both you and the planet.