Carbon intensity update for 28th Oct 25

Stay informed about your electricity’s carbon footprint with Jaxi’s daily carbon intensity update for the UK. By understanding when carbon intensity is low or high, you can plan your energy use more efficiently and sustainably.

On October 28, 2025, the UK experienced varying levels of carbon intensity throughout the day. Carbon intensity, measured in grams of CO2 per kilowatt-hour (gCO2/kWh), indicates how much carbon dioxide is emitted to produce electricity at any given time. Here’s a breakdown of the day’s figures:

• 00:00 – 10:30: The early morning hours showed excellent performance, with carbon intensity staying consistently low between 33 to 48 gCO2/kWh. This period is ideal for running appliances with a lower environmental impact.
• 10:30 – 15:00: Midday continued the trend of low emissions, with only slight increases. Intensity stayed within 35 to 59 gCO2/kWh, still in the low range.
• 15:00 – 16:00: A short uptick occurred with a peak reaching 70 gCO2/kWh, although it remained within the ‘low’ category.
• 16:30 – 19:00: Carbon intensity shifted into a ‘moderate’ zone, climbing up to 122 gCO2/kWh as demand surged—highlighting the times when fossil-fuel generators may be called upon.
• 19:00 – 23:30: The day concluded on a positive note, with emissions reducing steadily to end around 48 gCO2/kWh.

These fluctuations are not just numbers—they reflect the balance between renewable and non-renewable sources powering the grid. When demand increases and renewable supply is limited, fossil fuel-based generators, such as coal or gas plants, often step in to meet the gap. This results in higher carbon output during certain hours.

What does this mean for you? By choosing to run energy-intensive appliances—like washing machines, dishwashers, or EV chargers—during low-carbon periods, you actively reduce your personal carbon footprint and help lessen strain on the grid.

Jaxi empowers you with real-time carbon intensity updates, helping you make climate-smart choices every day. Plan your energy usage during off-peak, low-intensity windows—typically late at night or early morning—for a cleaner, more sustainable future.

Together, we can make each kilowatt-hour count. Check back daily for updated carbon intensity reports and stay one step ahead in your journey toward greener living.