Carbon intensity update for 19th Sep 25

UK Carbon Intensity Report for September 19, 2025

On September 19, 2025, the UK electricity grid experienced a range of carbon intensity levels throughout the day. Understanding these fluctuations can help you make smarter decisions about when to use your appliances in an environmentally friendly way. At Jaxi, we’re committed to helping you stay informed so you can lower your carbon footprint by using electricity during greener periods.

00:00 – 06:00: Low Carbon Intensity
During the early hours, carbon intensity remained consistently low, ranging from 56 to 97 gCO2/kWh. This was an ideal time for energy usage with minimal environmental impact.

06:00 – 09:00: Morning Peak
As people started their day, carbon intensity rose from low to moderate levels, peaking at 112 gCO2/kWh around 07:00. If possible, schedule energy-intensive tasks like laundry or dishwashing after this period.

09:00 – 14:00: Midday Dip
Carbon intensity dropped again during the late morning and early afternoon, staying between 77 and 94 gCO2/kWh. This timeframe offered another great opportunity for low-impact electricity usage.

14:00 – 17:30: Afternoon Surge
Energy demand increased in the afternoon, pushing carbon intensity into moderate and high levels. The grid reached up to 197 gCO2/kWh near 18:00, likely due to a reliance on fossil fuels when renewable sources were fully utilized.

17:30 – 23:00: Evening Decline
After the evening peak, carbon intensity gradually decreased, settling back into moderate levels. Values ranged from 157 to 175 gCO2/kWh as the day wound down.

Key Metrics:
– Highest Carbon Intensity: 198 gCO2/kWh at 18:00
– Lowest Carbon Intensity: 56 gCO2/kWh at 02:00

By adjusting your energy usage to align with low carbon intensity periods, you can reduce your environmental impact and support a more sustainable energy system. Electricity is cleanest when demand is low and renewable energy is abundant. During peak times, the grid may rely on backup generators fueled by coal or gas, which significantly increases emissions.

Stay tuned for more daily updates from Jaxi to help you make smarter, greener energy choices every day.