Industries

Solar for Supermarkets and Refrigerated Retail

Guide · Commercial solar & battery · ~5 min read

Refrigeration runs around the clock, and that steady load makes supermarkets and cold-storage retail some of the best-suited sites for commercial solar. Here's how to think about it before you install.

Why refrigerated retail is a strong fit for solar

Refrigeration is a constant, predictable load. Unlike a business that only draws power in short bursts, a supermarket or bottle shop is cooling stock every hour of the day. That baseload runs straight through the middle of the day when your solar array is producing the most.

When your generation lines up with your consumption like that, more of the solar you produce gets used on site rather than exported. Self-consumption is where the value usually sits, because you're offsetting power you'd otherwise buy at retail rates.

• Steady daytime cooling load matches solar output well
• High self-consumption tends to improve the economics
• Extended trading hours mean the system earns its keep for longer
• Rooftop space above shopfronts and warehouses is often underused

Understanding your cold-chain load profile

Before any panels go on the roof, it pays to understand how and when your site actually uses power. Refrigeration, HVAC, lighting and back-of-house equipment all draw differently through the day, and your tariff structure shapes what's worth targeting.

Demand charges are worth a close look. Many commercial tariffs bill on peak demand, and compressors kicking in together can spike that figure. A properly sized system, and increasingly a battery, can help smooth those peaks — though how much depends entirely on your tariff and network.

• Interval data from your meter shows your real usage pattern
• Demand charges can be a significant part of a supermarket bill
• Compressor cycling and defrost cycles affect peaks
• Trading hours and seasonal stock changes shift the load

Adding batteries and AI energy arbitrage

Solar covers your daytime load, but refrigeration keeps running after the sun goes down. That's where a battery earns its place — storing cheap or self-generated energy to cover evening and overnight cooling.

ATI's differentiator is AI-driven energy arbitrage. The battery charges when power is cheap and discharges or exports when prices are high, working your tariff automatically rather than on a fixed timer. For a site with a big overnight load like refrigeration, that flexibility can add up over time. Actual outcomes depend on your tariff, network and site.

Protecting the cold chain

Stock loss from an outage is expensive and reputational. While a standard grid-connected solar system won't run your fridges during a blackout on its own, a correctly configured battery and backup setup can help keep critical loads online.

The right approach comes down to which circuits you need to protect and for how long. That's a design decision made against your actual equipment and risk tolerance, which is one of the things a site review sorts out.

• Identify which refrigeration and safety circuits are critical
• Backup design depends on load size and required run time
• Monitoring helps you spot issues before stock is at risk

Installation on a working store

Supermarkets can't close for a fit-out. ATI uses an in-house team with no subcontractors, so the crew planning your job is the crew doing it — which makes staging work around trading hours and deliveries more manageable.

We're CEC and SAA accredited and work Australia-wide, scaling systems from 6.6kW right up to the MW range. That means the same team can handle a single store or a rooftop the size of the 415kW array we installed at DB Santasalo in Bulli, NSW.

• In-house team, no subcontractors, from design to commissioning
• CEC and SAA accredited
• Systems from 6.6kW to MW scale
• Work staged around trading hours and cold-chain operation

Where to start

Every store is different — your roof, your refrigeration plant, your tariff and your trading hours all change the picture. That's why we don't quote off a rule of thumb.

A site review gives you real numbers based on your interval data and equipment, so you can see what solar, battery and arbitrage could realistically do for your business. When you're ready, we're happy to take a look.

More: browse all guides · see our projects