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Can a solar battery reduce peak demand charges for Canadian businesses?

Many Canadian commercial electricity tariffs include demand charges based on the highest power draw (kW) during billing intervals.

UpdatedJune 2026
Read time4 min read
CategoryCommercial Battery Storage
Reviewed byGI Engineering
Clear answer

Clear answer, explained.

Batteries store energy from solar or the grid during low-cost periods and automatically discharge during peak demand spikes. This reduces the facility’s peak load seen by the utility, lowering demand charges and improving overall electricity cost savings.


Key points

What this means in practice.

  • Batteries provide peak shaving by lowering grid demand
  • Reduces demand charges on demand-based tariffs
  • Stores solar energy for later high-cost periods
  • Improves onsite solar self-consumption
  • Operates automatically using energy management controls
  • Can significantly improve

When this applies

Best-fit environments.

  • Businesses on demand or
  • Time-of-Use tariffs
  • Facilities with short, high-load spikes
  • Offices, retail, warehouses, and commercial buildings

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