Sourced fact
The rank-one 120-minute forecast window is 12:00–14:00 Europe/London on 14 August 2026.
National Energy System Operator and partners: Carbon Intensity API national forecast
Regulation · GB
Lowest-forecast 120-minute charging window
In the 2026-08-14 E2 forecast snapshot, the rank-one continuous 120-minute interval runs from 12:00 to 14:00 Europe/London. The four half-hour forecasts produce a mean of 83.25 gCO2/kWh, with a minimum of 83 and a maximum of 84 gCO2/kWh. That ranking applies only to this GB forecast day and does not predict another day's best interval or the emissions of an individual charge.
National Energy System Operator and partners: Carbon Intensity API national forecast
Reviewed
Key facts and evidence
For Great Britain, reviewed on 2026-08-13, the lowest-mean continuous 120-minute forecast window in the 2026-08-14 Europe/London snapshot is 12:00–14:00. Four half-hour forecasts give a mean of 83.25 gCO2/kWh and span 83 to 84 gCO2/kWh; no recurring timetable or realised household result is inferred.
National Energy System Operator and partners: Carbon Intensity API national forecast
Sourced fact
Its four continuous half-hour forecasts have a mean carbon intensity of 83.25 gCO2/kWh.
National Energy System Operator and partners: Carbon Intensity API national forecast
Sourced fact
The contributing forecasts range from 83 to 84 gCO2/kWh.
National Energy System Operator and partners: Carbon Intensity API national forecast
Sourced fact
Rank one is specific to the GB 2026-08-14 forecast and cannot be carried into a later day.
National Energy System Operator and partners: Carbon Intensity API national forecast
Interpret the best continuous 120-minute carbon-intensity forecast interval in the dated 2026-08-14 GB snapshot and preserve its limits.
Continuous forecast horizon
The E2 method admits only continuous half-hour slots with a forecast value. For this duration, the unrounded mean ranks 12:00–14:00 Europe/London first within the 2026-08-14 local day.
Variation inside the window
The minimum and maximum show the spread of the four contributing forecasts rather than an uncertainty interval. They remain forecast system values and do not become measurements when averaged.
No recurring rule
The page makes no claim that midday is generally preferable. Another local date requires its own complete forecast horizon and ranking.
What to do next
Read the interval as four forecast slots from one complete GB local-day horizon, keeping the date and timezone visible.
Immediate action: Verify a fresh forecast and the required charging duration before making a later timing decision.
- Discard this ranking for any date other than 2026-08-14 or when actual-emissions evidence is required.
Professional hand-off
- Resolve charger or vehicle control questions through the applicable manufacturer documentation or support.
Questions this record can answer
What does the sourced evidence say about continuous forecast horizon?
The E2 method admits only continuous half-hour slots with a forecast value. For this duration, the unrounded mean ranks 12:00–14:00 Europe/London first within the 2026-08-14 local day.
What does the sourced evidence say about variation inside the window?
The minimum and maximum show the spread of the four contributing forecasts rather than an uncertainty interval. They remain forecast system values and do not become measurements when averaged.
What does the sourced evidence say about no recurring rule?
The page makes no claim that midday is generally preferable. Another local date requires its own complete forecast horizon and ranking.