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by pjc50 1381 days ago
Very tricky. You need at least:

- the electricity consumption of the system, which varies depending on use

- the electricity consumption of the air conditioning, which is to a first approximation about the same as the fist number (you've got to remove all that energy again, at some efficiency coefficient). Varies by ambient temperature.

- the CO2 mix of the grid at that time, which varies from minute to minute.