Energy Costs

Behind-the-Meter vs Front-of-Meter Solar

Guide · Commercial solar & battery · ~5 min read

The way your solar and battery connect to the grid shapes what you can save and how you get paid. Here's the practical difference between behind-the-meter and front-of-meter systems, and how to work out which one fits your site.

What the terms actually mean

The 'meter' is the point where your site connects to the grid — the boundary between your electrical world and the network's. Where your solar or battery sits relative to that meter changes how the energy is used and valued.

Behind-the-meter (BTM) means the system is on your side of the connection, feeding your own loads first. Front-of-meter (FTM) means the system connects on the grid side and its main job is to export and trade energy into the market.

• Behind-the-meter: powers your building, reduces what you draw from the grid.
• Front-of-meter: connects at the network level, sells energy to the grid or market.
• The meter is the dividing line that determines how energy is counted and paid.

How behind-the-meter solar works

With a behind-the-meter system, every unit your panels or battery produce is a unit you don't have to buy from your retailer. Because you're offsetting the full retail rate — including network and other charges baked into your bill — the value per unit is often higher than what you'd get exporting.

This is the standard setup for most commercial and residential sites, from a 6.6kW rooftop to the 415kW array we installed at DB Santasalo in Bulli. If your business runs heavy loads during daylight — manufacturing, cold storage, offices — self-consumption behind the meter usually does the heavy lifting.

• Best when your site consumes power during generation hours.
• Offsets retail rates, which typically carry more value than export rates.
• Simpler approvals for most sites within the network's standard limits.

How front-of-meter solar works

Front-of-meter systems are built to sell energy rather than serve a single building's loads. They connect at the network side and are treated more like a generator, with different metering, agreements and network approvals.

FTM tends to suit larger developments, dedicated generation sites, or businesses with spare land and an appetite to participate in energy markets. It's a bigger commercial and regulatory undertaking than a rooftop BTM system, and the approvals can be more involved.

• Designed to export and trade energy, not power one site.
• Involves network-side connection and generator-style agreements.
• Generally suited to larger, purpose-built or land-backed projects.

Where batteries and AI arbitrage change the picture

The line between the two blurs once you add storage. A behind-the-meter battery can shift solar into your peak-tariff periods, cutting demand charges and evening loads instead of exporting cheaply during the day.

This is where our AI-driven energy arbitrage earns its keep. The battery charges when power is cheap and discharges or exports when prices are high, so a behind-the-meter system can still capture upside from grid pricing — without the complexity of a full front-of-meter connection. How much you gain depends on your tariff, network and load profile.

• Storage lets you time when you use or sell solar.
• AI arbitrage responds to price signals automatically.
• A BTM battery can chase market value without going fully front-of-meter.

Choosing the right approach for your site

For most businesses, behind-the-meter is the practical starting point — it attacks your biggest cost, the power you buy, and it's quicker to approve and install. Front-of-meter comes into play when generation is the goal in its own right and you've got the scale and land to justify it.

The honest answer is that it depends on your tariff, your daytime consumption, your roof or land, and your network's rules. A proper site review is the only way to size it accurately and model the value — no guesswork, no invented figures.

• Match the setup to how and when you actually use power.
• Consider tariffs, demand charges and available roof or land.
• Get the design sized and modelled against real site data.

Talk to ATI

We're CEC and SAA accredited, work Australia-wide, and run everything with our own in-house team — no subcontractors — from 6.6kW rooftops to MW-scale systems. We've delivered for the likes of Garmin, Goldschmidt, a Hunter Valley vineyard and Kingswood.

If you're weighing up behind-the-meter versus front-of-meter, book a site review. We'll look at your loads, tariff and connection, then recommend the setup that makes the most of your energy.

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