Battery Load Displacement Ontario:
How It Works in 2026

What Is Load Displacement?

Load displacement is the principle that your solar system should be designed to offset electricity you would otherwise purchase from the grid — not to operate as a small power plant selling electricity back at a profit.

Under Ontario's regulatory framework, the province ended its Feed-In Tariff (FIT) and microFIT export programs for new applicants. Today, residential solar operates under net metering, where surplus generation earns credits on your hydro bill — but at the wholesale electricity rate, not a premium export rate.

This distinction matters enormously for system design. A solar array that consistently produces more than you consume doesn't earn proportionally more money — it earns credits at roughly 7–9¢/kWh on the wholesale market. Meanwhile, every kilowatt-hour you consume from the sun instead of from the grid saves you up to 24.2¢/kWh during on-peak hours. Self-consumption is always more valuable than export under Ontario's current rate structure.

Ontario Time-of-Use Rates — 2026

Ontario's TOU rate structure is the foundation of load displacement economics. The spread between on-peak and the net metering export credit is over 15¢/kWh — every kWh you consume from your own solar instead of exporting is worth more than twice as much.

Source: Ontario Energy Board regulated rates, effective 2026. Rates subject to semi-annual OEB adjustments.

Why Battery Storage Transforms Load Displacement

Solar panels produce electricity when the sun is shining — typically peaking between 10am and 3pm. But residential electricity consumption peaks in the early morning (7–9am) and evening (5–8pm), precisely when solar output is lowest. Without a battery, a significant portion of your solar generation offsets mid-peak loads (14.4¢/kWh) but misses the on-peak evening window entirely (24.2¢/kWh).

For Ontario homeowners on the Ultra-Low Overnight (ULO) rate plan, a battery also enables arbitrage — charging at 2.8¢/kWh overnight and discharging during 24.2¢/kWh on-peak hours. Combined with daytime solar, this dual strategy delivers maximum load displacement year-round, including Ontario's low-irradiance winter months. Learn more about battery ROI in Ontario.

How Ontario's Load Displacement Rules Work in 2026

Ontario's IESO net metering framework allows residential customers to install solar systems up to 12 kW of inverter capacity (increased from 10 kW in 2024). Surplus generation flows to the grid and is credited on a rolling 12-month basis. At the end of each 12-month period, unused credits are retired — you receive no cash payment for stranded surplus.

This creates a strong incentive to size your system accurately. A home consuming 12,000 kWh/year benefits from a system sized to produce approximately 12,000–13,000 kWh annually. Oversizing to 18,000 kWh results in 5,000–6,000 kWh of exported generation that earns wholesale credits then expires — delivering far less value.

Solar X performs a 12-month consumption analysis for every Ontario customer before finalizing system design — factoring in summer cooling peaks, winter heating loads, and usage patterns unique to your property. Read about solar curtailment in Ontario and how it interacts with load displacement design.

Load Displacement Across Ontario Utilities

Load displacement design principles are consistent across Ontario, but interconnection timelines and local rate structures vary. Solar X manages the full interconnection process with every major Ontario utility.

Frequently Asked Questions