Commercial BESS in Ottawa

Commercial buildings in Ottawa are served by Hydro Ottawa. Global Adjustment dominates C&I electricity cost. Class A customers (peak demand ≥ 1 MW, or ≥ 500 kW in eligible sectors) are billed GA on their share of the five IESO coincident system peaks, making peak-hour dispatch the single largest BESS value driver. Class B customers see GA as a volumetric charge and monetise BESS mainly through LDC demand charges.

Canadian BESS Snapshot

Last verified: 2026-06-30
City
Ottawa, Ontario
Local distribution utility
Hydro Ottawa
Rate class modelled
General Service 50–4,999 kW
Demand charge
CAD $10.70 per kW-month
Peak window
Weekdays 11:00–17:00 (summer), 07:00–11:00 & 17:00–19:00 (winter)
Example system
150 kW / 350 kWh, 2.3 h
Example annual savings
CAD $21,633
Example simple payback
7.1 years

Ottawa sizing example

Recommended system
150 kW / 350 kWh
Peak reduction
140 kW
Estimated annual savings
$21,633
10-year net project value
$185

Illustrative — site-specific analysis required.