Data Sources & Assumptions

Please note that the calculation results from the EV Calculator are based on the following assumptions and may have limitations:

The EV Calculator provides the cost estimate based on the input values you entered. These values include the battery size of the selected EV, the rated power level of the chosen EV charger, your daily average kilometres driven, the number of charging days, the frequency of charging, and the electricity rate associated with your chosen charging times.

For Plug-in Hybrid vehicles (PHEV), the fuel savings calculation assumes electricity is used first, with gasoline covering the remaining distance. The daily electric range is assessed using annual kilometres, battery capacity, and charging frequency.

Actual savings may vary due to changes in the factors listed above and external conditions (e.g., driving conditions, electricity cost, charging frequency, etc.).

For gasoline vehicles, the emissions calculation looks at the annual kilometres driven and the emission factor associated with the make and model of the gasoline vehicle by kilometer.

For electric vehicles (BEVs), the calculation looks at the emission linked to the electricity used for charging. It considers your annual kilometres driven, and the vehicle’s fuel to estimate the annual electricity consumption. The energy consumed considers your set charging times and required range, evenly distributed across your charging days. The calculation then incorporates the average fuel mix emissions associated with the times of day the EV will be charging.

For plug-in hybrid (PHEV), calculations assume that the vehicle first uses electricity for the EV range and then gasoline for any additional range needed for your average daily commute. Your annual kilometres driven and charging schedule frequency selections are used to assess the required daily electricity range of your EV. 

This section of the EV Calculator estimates the anticipated annual time spent charging your EV based on the rated power level of the selected EV chargers, your daily average kilometres driven, and the vehicle’s fuel efficiency to determine the required charging time.

To compare the cost of charging with a Level 1 versus Level 2 charger, the calculation considers:
  • The frequency of weekly charging is based on selected charging days and annual kilometres driven.
  • The average electricity rate during charging times.
  • EV fuel mileage.
  • The rated power level of the chosen EV charger
For plug-in hybrid vehicles (PHEV), the cost calculation assumes the vehicle operates solely on electricity, excluding gasoline usage. This assumption may result in differences between the fueling cost tab and the charging tab. Annual kilometres driven and charging schedule frequency are used to determine the EV's daily electric range.

The Cost of Ownership outputs are estimates based on the input values you provide throughout the EV calculator. The calculator adds the manually entered Vehicle Cost and Annual Maintenance Cost inputs, and the calculated fueling costs (gasoline for gasoline vehicles and electricity for BEVs/PHEVs using the selected charger) for each year of ownership. Fueling costs are calculated using the parameters defined for the EV Calculator, as outlined above.

The cost of EV chargers varies by manufacturer and retailer and must be manually entered. Similarly, installation costs depend on your specific infrastructure needs and are also entered manually.

Homes with sufficient panel capacity typically have lower installation costs. Homes requiring service upgrades may experience higher installation costs if the current infrastructure does not support the upgrade.

The calculator combines:
  • Your input for the cost of the EV chargers.
  • Your input for installation costs.
  • Calculated average fueling costs (electricity) for each year of ownership (calculations are described above).

Note

The calculations use a monthly methodology, assuming 4 weeks per month and 12 months a year. Charging hours are rounded using standard rules: 0.5 and above round up, while values below 0.5 round down.

The EV Calculator provides an estimate of potential fuel and emissions saving and relies on key assumptions and credible data sources to provide accurate estimates. Actual cost savings may vary depending on a range of factors (e.g. driving conditions, electricity cost, charging frequency, average mileage of vehicles, current fuel prices, distance travelled, etc.).

This tool only considers the impact of EV charging and should be used for general reference only. When installing an EV charger or upgrading your system, consider your entire home's energy needs-appliances, heating, and cooling—to ensure efficiency and cost savings. The EV Calculator is useful guide, but choosing a rate plan for your home based only on EV charging needs may not be ideal. Factor in your total energy use, especially during peak hours, to find the best rate plan for your needs.

If you need more information, please contact EV@alectrautilities.com.

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