Interval Meters

Interval Meters

Interval meters are metering devices that store hourly consumption information. They are “read” daily – usually after midnight, by a telephone or other communication line. Business customers with an interval meter are billed for their hourly energy consumption against the Hourly Ontario Energy Price, which is set hourly by the Independent Electricity System Operator (IESO).

The Ontario Energy Board regulations require that all consumers that have an average monthly peak of one megawatt of electricity over the space of a calendar year must have an interval meter. A mid-sized commercial or small-sized industrial facility typically fits this profile. New customers that expect to have an annual average peak of 200 kW or more also need to install an interval meter. Even if you don’t fall within these parameters, you may still choose to install an interval meter.

If you currently are a customer of Haldimand County Hydro and have an interval meter, click here to login to your account