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Types of meters
and calculating consumption

Your meter measures and records the amount of electricity you consume. It is a high-precision device that was inspected in accordance with rigorous Industry Canada standards before being installed.

Types of meters

Meter reading

In order to read your meter and bill you for your actual consumption, Hydro-Québec must have access to your meter at all times. How often meters are read depends on your maximum power demand.

Meter readings mean accurate billing. Make sure that Hydro-Québec personnel have access to your meter.

If you have a mechanical or electromechanical meter, your actual consumption is indicated by the meter's four dials (thousands, hundreds, tens and ones). The dials measure kilowatthours (kWh) and work like those on your electricity meter at home.

The pointer position is read on the four dials from left to right. If the pointer is between two digits, take the smaller of the two except if it is between 9 and 0. in which case the reading is 9. On electronic meters, the display window shows consumption.

All meters measure cumulative kilowatthours. To calculate your consumption,

  • take the latest reading and subtract the four-digit number on your previous bill

  • multiply the difference by the multiplier indicated on your bill

This is an example of how consumption is calculated:

example of how consumption is calculated

To obtain your power demand (kW and kVA), apply the multiplier shown on your bill to the meter reading (W and VA), then divide by 1,000. You don't need to calculate the difference between the current and previous reading, since the power demand is reset after each reading.

Electromechanical meters have a digital display that indicates the maximum power demand.

See also