137 kW rooftop solar offsetting 87.3% of electricity at a grocery distribution facility in Mississauga

A high daytime load against a roof asset approaching the end of its replacement cycle.

Smaller distribution facilities often operate with consistent electrical demand despite a more compact footprint. Refrigeration equipment, material handling systems, and daily logistics activity create steady electricity consumption that can be difficult to reduce through efficiency measures alone.

At the Brunel Road location, Rabba Fine Foods was looking to materially lower reliance on grid electricity while keeping warehouse operations stable and predictable. On-site generation needed to be sized accurately for the facility’s actual annual usage to ensure high utilization and long-term value.

Size to the service. Mount without penetrations.

A rooftop solar system was sized to the facility’s annual electricity consumption profile, enabling a high percentage of on-site electricity offset throughout the year. Rather than maximizing system size, the design focused on achieving a strong electricity offset relative to the building’s actual usage.

The result is a solar installation that offsets the majority of the facility’s annual electricity consumption while operating as a straightforward, low-maintenance asset integrated into the existing electrical system.

The numbers, then the consequence.

• 01156,919 kWh of solar electricity generated annually.
• 0287.3% of the facility's annual electricity consumption offset by solar.
• 03System commissioned December 29, 2023, integrated without disruption to distribution operations.

For the facilities and engineering audience.

The system includes 137 kW DC of rooftop solar capacity paired with 96 kW AC via Fronius inverters. Designed as a commercial solar installation for a food distribution facility, the system was sized to align with the site’s annual electricity consumption profile while maintaining reliable long-term performance.

System configuration prioritized reliability, long-term performance, and production visibility. Ongoing performance can be supported through a proactive solar operations and maintenance program designed to maximize system output over the life of the asset.

Facility characteristics that shaped the design.

• Compact grocery distribution facility with steady, year-round electricity demand
• High on-site solar utilisation driven by refrigeration and daily logistics activity
• Rooftop area suitable for efficient, proportionate solar deployment
• Annual load profile enabling a high percentage electricity offset

What was installed.