Why is your electricity bill higher? Check these numbers first

US & Canada · Cost examples use USD unless explicitly labeled CAD.

Separate usage from price

Start with two bills and highlight the billing dates, kilowatt-hours used, meter-reading type and charges. A bill covering 35 days can be higher than one covering 28 days even when your routine has not changed. Divide each bill’s kWh by its number of days to compare average daily use.

Then compare the rate structure. A higher total can come from increased consumption, a higher price per unit, a changed fixed charge or a combination. Note whether the bill uses an actual or estimated reading and whether it includes a correction for an earlier period.

The same method works in both countries. Use USD for a US bill and CAD for a Canadian bill, and check the utility’s time-of-use or tiered rates where applicable. Compare kWh separately from currency so an exchange rate does not obscure a change in consumption.

Use a small worked example

Imagine the earlier bill shows 600 kWh over 30 days and the new one shows 720 kWh over 36 days. Both average 20 kWh per day. The larger usage total alone is not evidence that an appliance suddenly became inefficient. These numbers are examples, not a typical household benchmark.

Next compare the same season last year if records are available. Weather, occupancy and heating equipment can make a comparison with the immediately preceding month less useful. Do not assume that the neighbor’s total is a suitable target for your home.

Build a shortlist of likely changes

Think about what changed during the billing period: guests, more time at home, a portable heater, added laundry, cooling use, an electric vehicle or a second refrigerator. Give each change a rough start date. This produces a testable shortlist instead of a long list of things to unplug.

For a device that draws a reasonably steady load, energy in kWh equals watts divided by 1,000, multiplied by operating hours. A hypothetical 1,000-watt device running for two hours uses 2 kWh. Multiply by the applicable variable electricity rate to estimate the energy charge. Cycling equipment needs measured use or a better model.

Check evidence before buying replacements

Use your utility’s daily or hourly usage view if available. Look for the date a sustained increase started and whether it follows occupancy or weather. A plug-in energy monitor can help with compatible plug-in devices, but follow its load limits and instructions; it is not suitable for every appliance.

Keep a short log for a week. Change one optional habit at a time so you can see whether it matters. Avoid switching off essential heating, refrigeration or safety equipment to run an experiment. If the meter reading or charges look wrong, ask the utility to explain them.

Turn the findings into an action

Choose the largest supported opportunity first. That might mean correcting a bill, changing an optional heating habit or arranging equipment service. Record the next billing period’s daily use and relevant weather. A purchase is justified by the problem it solves and its total cost; a high bill by itself does not prove that buying a new appliance will save money.