To all that previously contacted Measurement Canada in support of fair billing standards, your voice was heard. Measurement Canada has now made this matter a priority and is collaborating with EV industry stakeholders to ensure that EV billing is made transparent and fair for all EV drivers. 


Public EV charging operators currently bill EV drivers on a time-basis (per-minute or per-hour), because Canadian metering rules were not designed with EV charging in mind.  After hearing from EV drivers and enthusiasts across the country, like you, Measurement Canada is now working on a plan to develop metering standards to allow EV charging to be priced on the amount of energy received (kW per hour). Tesla will continue to monitor the development of the standard and may, from time to time, share news with those who have opted-in to our Tesla Policy mail list about any proposals that would negatively impact consumers and the transition to sustainable energy. 

The current rules would require the utilization of a pre-approved and inspected utility-grade electricity meter, which would increase the costs of charging infrastructure, and therefore the cost to charge an EV.  

While EV charging and pumping gas are entirely different experiences, the equivalent would be like paying for gas based on how long a customer is using the pump -- regardless of the amount of gasoline transferred to their vehicle. Similarly, it would be like paying for groceries based on the amount of time spent in the supermarket, rather than the products in your cart.  

As you may know, EVs charge at different speeds for a variety of reasons: 

Different cars charge at different rates on the same charging station 

- Different vehicle models are equipped with different onboard chargers and have different charging capabilities.  

- DC-fast charging speeds also depend on the vehicle’s capabilities and other factors. 

Identical cars on different charging stations may charge at different rates 

- Two stations with identical per-minute billing but different power ratings will result in the same bill, for a different amount of energy delivered.  

Two identical cars, on two identical charging stations may charge at different rates 

- DC charging speeds depend on a battery’s state of charge, battery temperature and ambient temperature. 

- Some charging technologies use power management technology to reduce the flow of power to a vehicle in order to optimize for efficient use of the utility service connection. While this can be useful for charging operators, drivers often have no knowledge of power limiting or power-sharing capabilities. Such technologies are likely to become more commonplace, which is why per kWh billing is more appropriate.  


Measurement Canada’s role is to protect consumers by ensuring that they pay for what they’re getting. However, the practice of time-based billing, which EV charging operators have had to adopt, does just the opposite. It lacks transparency, it undermines the principles of consumer protection, and it is unfair for EV drivers like you. The fairest and most transparent way to bill EV charging is based on the amount of energy received, measured in dollars per kilowatt hour ($/kWh).  


Many EV owners and enthusiasts like you asked Measurement Canada to allow kWh-billing as early as possible, and: 

  • Temporarily pause the current requirements for EV charging equipment to be registered and certified as electric (utility) meters, so that charging operators can bill their customers on a per-kWh basis. 
  • Set a clear timeline to consult EV charging manufacturers, EV drivers, and other key stakeholders and develop measurement specifications for EV charging stations. As a consumer protection agency, engaging with EV drivers should be a top priority.  
  • Exempt residential and workplace stations from metering specifications and give multi-unit building owners flexibility in how to set up billing for home charging in larger buildings. 

Enabling kWh-billing for EV charging will provide more transparent pricing and ensure that EV drivers are not penalized for slower charging sessions. There is still a lot to be done, but we are pleased to learn that Measurement Canada has begun the process to implement new metering rules for EV charging technologies. 


Tesla’s mission is to accelerate the world’s transition to sustainable energy, and with your help, we are ensuring that all EV drivers feel confident that they’re getting billed for the electricity they’re really using. Thank you again for your advocacy efforts. 

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