The study identified several challenges:

• Insufficient capacity of the existing electrical feed-in
• Significant distances between the facilities and the charging stations
• Site layout constraints and limited space in the electrical room
• Variability in travel routes

• Charging Infrastructure
  • Installation of 15 charging stations:
    • 13 DC fast chargers (Level 3)
    • 2 AC chargers (Level 2)
  • Optimized per-unit power:
    • 20 to 25 kW (DC)
    • up to 19.2 kW (AC)

  This configuration meets daily needs without oversizing the grid.

  New power supply

  • Addition of a dedicated 400 A electrical input at 347/600 V
  • Connection to the Hydro-Québec grid.
  • Integration of an electrical room in a container near the stations

  This approach reduces losses, wiring costs, and impacts on existing facilities.

  Smart charging management

  • Implementation of a charge management system
  • Peak power shaving
  • Participation in Hydro-Québec’s demand management programs

Cost Reduction

• Reduced energy costs for buses by switching from diesel to electricity
• Optimized operating costs through a charging strategy tailored to route profiles
• Additional savings through power curtailment and demand management

Emissions Reduction

• Reduced GHG emissions

Operational Reliability

Simulations demonstrate:

• Full bus charging in all normal scenarios
• Resilience in the event of outages or adverse conditions
• Flexibility for future expansion