It'll be something like +/-0.5 Hz maximum, and during the day I noticed a clock drift by a minute or two, but the long term average error will be zero; the utilities presumably reference it to time standards.

Observing the instantaneous frequency is one way to compare supply and demand. If the frequency drops, the utilities will bring more power on line to maintain it.

See also this question and the current UK grid frequency

It'll be something like +/-0.5 Hz maximum, and during the day I noticed a clock drift by a minute or two, but the long term average error will be zero; the utilities presumably reference it to time standards.

Observing the instantaneous frequency is one way to compare supply and demand. If the frequency drops, the utilities will bring more power on line to maintain it.

See also this question and the current UK grid frequency

It'll be something like +/-0.5 Hz maximum, and during the day I noticed a clock drift by a minute or two, but the long term average error will be zero; the utilities presumably reference it to time standards.

Observing the instantaneous frequency is one way to compare supply and demand. If the frequency drops, the utilities will bring more power on line to maintain it.

It'll be something like +/-0.5 Hz maximum, and during the day I noticed a clock drift by a minute or two, but the long term average error will be zero; the utilities presumably reference it to time standards.

Observing the instantaneous frequency is one way to compare supply and demand. If the frequency drops, the utilities will bring more power on line to maintain it.

See also this question and the current UK grid frequency