Carbon intensity update for 28th Nov 25

On November 28, 2025, the United Kingdom experienced encouraging trends in carbon intensity, with a strong indication of cleaner, more sustainable energy usage throughout the day. By monitoring carbon intensity levels, users can make informed decisions about when to use high-energy appliances, helping reduce demand during peak emission times and supporting greener energy consumption.

Midnight to Early Morning (12:00 AM – 6:00 AM):
Carbon intensity remained consistently low, ranging between 76 and 89 gCO2/kWh. The cleanest window was observed at 3:00 AM to 3:30 AM, reaching an impressively low value of just 76 gCO2/kWh, indicating high usage of renewable sources such as wind and hydro power.

Morning Peak (6:00 AM – 8:00 AM):
As residents began their day, demand for electricity increased slightly, and the carbon intensity index rose to a moderate level, peaking at 102 gCO2/kWh. This likely reflects a temporary reliance on non-renewable energy sources like gas or coal-fired power stations to meet morning demand.

Daytime Stability (8:00 AM – 6:00 PM):
The majority of the day returned to predominantly low carbon intensity levels. Emissions fluctuated within a range of 67 to 104 gCO2/kWh. The relatively stable performance during working hours highlights the effectiveness of integrating renewable energy into the grid and maintaining sustainable output across daylight hours.

Evening Surge (5:30 PM – 7:00 PM):
Another moderate peak occurred during early evening when demand typically rises due to home energy use. The carbon intensity reached its upper range of the day at 104 gCO2/kWh, indicating a momentary strain on renewable supply and the possible activation of fossil-fuel generators to compensate.

Late Evening (After 7:00 PM):
Encouragingly, carbon intensity dropped once again to below 100 gCO2/kWh and remained low for the rest of the night, underscoring the grid’s return to cleaner generation methods as demand eased.

Why Carbon Intensity Matters

Carbon intensity measures how much CO2 is emitted per kilowatt-hour (gCO2/kWh) of electricity generated. Lower carbon intensity means a higher share of electricity comes from renewable and low-emission energy sources. At Jaxi, we aim to empower customers to reduce their carbon footprint by scheduling high-power tasks—like running dishwashers or electric heating—during periods of lower carbon intensity.

By staying informed and responsive to carbon intensity updates, you can contribute to a more sustainable UK energy system. On days like November 28th, the UK illustrates that a cleaner, greener future is achievable through smarter energy use and the continued expansion of renewables.

Carbon Intensity Index:
Low: <100 gCO2/kWh
Moderate: 100–150 gCO2/kWh

Stay updated with daily carbon intensity reports at www.jaxi.co.uk and plan your energy usage for a more sustainable tomorrow.