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EV Evidence

Regulation · GB

What a carbon-intensity forecast means for charging

A carbon-intensity forecast is not a measurement of your charger or vehicle. It estimates grams of carbon dioxide per kilowatt-hour for Great Britain's electricity system. The E2 snapshot covers 2026-08-14 in Europe/London and all actual-value fields are unavailable. Use it as a dated planning signal only; this single day does not establish a typical daily pattern or realised charging emissions.

National Energy System Operator and partners: Carbon Intensity API national forecast

Reviewed

Key facts and evidence

For Great Britain, reviewed on 2026-08-13, this dataset describes a national electricity carbon-intensity forecast for the 2026-08-14 Europe/London day. It contains 48 half-hour forecast slots with complete forecast coverage, while every actual-value field is unavailable; the result is a planning signal, not a charger measurement or general daily pattern.

National Energy System Operator and partners: Carbon Intensity API national forecast

Interpret the dated national electricity carbon-intensity forecast without confusing it with charger measurements, actual values or a recurring daily pattern.

What is forecast

Each half-hour slot carries a GB system forecast in gCO2/kWh and a forecast issue time. The value is an estimate for electricity-system intensity during that interval, not a direct reading from the energy delivered to one EV.

What is not observed

The snapshot has complete forecast coverage for its local day but no actual values. It therefore cannot be used to report realised household or vehicle emissions after charging.

Single-day limit

Every conclusion stays attached to the 2026-08-14 Europe/London snapshot. A different date needs a different forecast, and this one day is not evidence for a customary low-carbon hour.

What to do next

Keep the forecast date, Europe/London timezone, GB scope and absence of actual values attached to every interpretation.

Immediate action: Check that the forecast still covers the intended local charging date before using it as a planning signal.

  • Stop using this snapshot for another day, another geography or any claim about measured household emissions.

Professional hand-off

  • Use the vehicle or chargepoint manufacturer's current instructions for operation; this data record supplies no control sequence.

Questions this record can answer

What does the sourced evidence say about what is forecast?

Each half-hour slot carries a GB system forecast in gCO2/kWh and a forecast issue time. The value is an estimate for electricity-system intensity during that interval, not a direct reading from the energy delivered to one EV.

What does the sourced evidence say about what is not observed?

The snapshot has complete forecast coverage for its local day but no actual values. It therefore cannot be used to report realised household or vehicle emissions after charging.

What does the sourced evidence say about single-day limit?

Every conclusion stays attached to the 2026-08-14 Europe/London snapshot. A different date needs a different forecast, and this one day is not evidence for a customary low-carbon hour.

Sources