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What factors affect my bill?

There are many factors that can affect the charges on your monthly bill. Here are some examples of factors ​that might affect the charges on your bill:


Days between bills

ENMAX bills are generated when we receive meter readings, and the time you’re charged for could range from 27 to 35 days. You’ll find the number of days your energy is billed for on page 3 of your invoice.

meter estimates

Meter estimates

When electricity or natural gas meters can't be read in person, your usage will be estimated based on the last confirmed reading. In most cases meter estimates only happen for a single billing period - but there are situations where consecutive billing periods will need to be estimated.

Learn about bill adjustments


Weather or seasons

Rising or cooling temperatures can change how much energy you use to stay comfortable. As well longer daylight hours in summer can reduce energy used for lighting.


Number of people living in house

Everyone in a house contributes to how much energy is used. Something as simple as family visiting for holidays or kids leaving home for school can lead to changes in your energy consumption.


New appliances/electronics

New appliances or electronics can increase or decrease how much energy you use.

Rate Changes

Rate changes

If you’re on a floating rate for your energy, price fluctuations can lead to increases or decreases on your bill even if you use the same amount of electricity or natural gas.

Customers are free to purchase natural gas services or electricity services from a retailer of their choice. For a list of retailers, visit ucahelps.alberta.ca or call 310-4822 (toll free in Alberta).