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Electric vehicle charging stations

An approved and certified measurement system is integral to accurate and reliable measurement of electricity and to protecting consumers and businesses against loss due to inaccurate or unreliable measurement.

Currently, electric vehicle charging stations (EVCS) used in a commercial transaction setting are either billing on the basis of time or a flat rate charge, or they are delivering the energy free of charge. This approach has allowed the electric vehicle (EV) charging infrastructure to keep pace with the rise of EV adoption while also providing industry with time to develop and refine technologies necessary for accurate and reliable measurement of kilowatt watt (kWh) consumption at EV charging stations. The use of a flat fee or time-based billing method for EV charging is exempt from the Electricity and Gas Inspection Act (EGIA) and other statutes at this moment.

We are developing requirements to allow EV charging based on the amount of energy consumed during a charge (i.e. by kWh). These requirements will be consistent with the EGIA, which sets out requirements for determining how measuring devices must perform when they are used to establish a charge for the purchase or sale of electricity as well as the requirement for businesses and device owners to register their measuring devices when selling electricity.

What we are doing to allow kilowatt-hour billing – an update

We have been consulting with Canadians on our strategy to allow accurate energy measurement at commercial EV charging stations. The consultation period for the proposed specifications and test procedures for the approval of Level 1 and Level 2 electric vehicle (EV) charging devices has closed. Thank you to all of you who submitted comments on the proposal. We will spend the next several weeks reviewing the comments received and adjusting the specifications and procedures.


Level 1 and Level 2 charging devices

Level 3+ charging devices

What you need to know about electric vehicle charging stations

What is our role with respect to electric vehicle charging stations?

Our mandate is to protect the right of consumers to accurate and reliable measurement when they make a purchase based on measurement. As part of our mandate, we administer the EGIA, which sets out requirements for the performance of measuring devices when charging for the purchase or sale of electricity. It also sets out the requirement for operators to register their measuring devices when selling electricity.

Why are technical requirements important?

The Electricity and Gas Inspection Act (EGIA) sets out requirements for measuring devices that sell electricity on the basis of measurement (e.g., accuracy performance standards). These requirements ensure consumers and businesses receive accurate and reliable measurement by establishing minimum measurement standards to which all vendors selling electricity must comply. Allowing billing for an EV charge based on the amount of electricity consumed during a charge (e.g. by kilo-watt hour or kWh) without any technical standards would put consumers and businesses at increased risk of loss due to inaccurate measurement or incorrectly functioning measuring devices.

What else are we doing to support Canadians?

While we are developing our standards for Canada, we are also continuing our work with our international partners, including the U.S. National Conference on Weights and Measures and the International Organization of Legal Metrology (OIML), to develop international model standards for billing by kWh at EV charging stations. Our participation in this work ensures Canadians' interests are represented during the development of these model standards.

This approach gives Canadian manufacturers international market opportunities, and provides businesses and consumers with greater access to EV charging station options, as compliance in one participating country enables market access to all participating countries.

Why is it important to register electric vehicle charging stations?

To protect the right of consumers to accurate and reliable measurement when being charged based on measurement, devices must be traceable to a person who is accountable for their use and operation.

To allow traceability and accountability, device operators are required to register as contractors under the EGIA. The requirement to register EV charging stations enables us to track devices used for EV charging to ensure they meet minimum standards for measurement accuracy and reliability. This protects consumers from inaccurate measurement or unfair practices.

What is the role of the operator?

The operator is responsible for keeping their EV charging station in good working condition. The operator must also keep records with the date of the charging station’s last measurement accuracy certification and energy consumption information.

This information allows us to monitor EV charging station device compliance and to respond to consumer complaints of suspected inaccurate measurement.

Is there a cost to register as a contractor?

There is no cost for EV charging station operators to register as a contractor. Registration can be completed by mail or email.

What are the billing methods for charging electric vehicles?

In Canada, possible billing methods for charging electric vehicles include flat fee (charge per use, charge per month) and time-based (charge per amount of time) billing. EV charging can also be provided free of charge or included in the amount charged for another service (e.g. as part of the rate for parking the vehicle).

What is the most common billing method?

Time-based and flat fee billing methods are most commonly used in Canada and other countries, as they allowed the EV charging infrastructure to grow quickly in support of EV adoption, while providing industry with time to develop and refine technologies necessary for accurate and reliable measurement of kWh consumption at EV charging stations. The use of a flat fee or time-based billing method for EV charging is exempt from the EGIA and other statutes at this moment.

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