Smart Meters and Solar in Australia 2026: What You Need and Why

Written by Jos Aguiar·April 2026·7 min

Share with a mate

What Is a Smart Meter?

A smart meter (also called an interval meter, digital meter, or advanced metering infrastructure) is an electricity meter that records consumption and generation in intervals — typically every 30 minutes or 15 minutes — and communicates this data to your distribution network operator and electricity retailer electronically. Unlike older accumulation meters that only count total kilowatt-hours consumed, smart meters track the direction of electricity flow, separating what you import from the grid from what you export to it.

This bidirectional measurement is what makes feed-in tariff payments possible. Your retailer needs to know exactly how many kilowatt-hours you exported in each billing period to credit your account at the applicable FiT rate. Without a meter that can distinguish import from export, accurate billing for solar households is not possible.

How Smart Meters Work With Solar

When your solar system generates electricity, it first supplies your home's immediate loads. Any surplus beyond what your home is consuming at that moment flows to the electricity grid through your meter. The smart meter records this export flow separately from your import flow, in 30-minute or 15-minute blocks.

At the end of each billing period, your retailer calculates:

• Total electricity you imported from the grid (charged at your import tariff, e.g., 28 to 35 cents/kWh)
• Total electricity you exported to the grid (credited at your feed-in tariff, e.g., 5 to 10 cents/kWh)
• Your net bill: import charges minus export credits

For households with a battery, the meter records exactly the same information: import, export, and the net flow. The battery absorbs solar surplus before it can reach the meter (reducing export) and discharges in the evening (reducing import). The smart meter measures only what actually crosses the boundary between your property and the grid, not what happens inside your home between solar, battery, and appliances.

What Happens to Your Old Meter

If you currently have an old accumulation meter (the spinning disc type), it will be replaced as part of the solar grid connection process. The replacement is arranged by your distribution network operator (the company that owns the poles and wires in your area), not by your solar installer. The process:

1. Your solar installer lodges a grid connection application with your network operator (or your retailer does this on your behalf)
2. The network operator approves the connection and schedules a meter exchange
3. A meter technician installs the new smart meter, usually taking 1 to 2 hours
4. Your electricity is briefly disconnected and restored during the exchange
5. The network operator communicates the new metering data to your retailer, who updates your account

In most states, this process happens automatically as part of the solar connection approval. You do not need to organise it separately.

State-by-State: What to Expect

Using Your Interval Data to Improve Your System

One of the underused benefits of having a smart meter is access to your interval data. This data shows exactly when you consume electricity and when you export. For solar owners, interval data reveals:

• Your self-consumption rate: what proportion of your solar generation you use yourself versus export
• Your peak demand windows: when you draw most heavily from the grid, informing time-of-use tariff decisions
• Whether a battery would be effective: if you export large amounts midday and import large amounts in the evening, a battery is a strong candidate
• The right battery size: your actual evening import is the most accurate input for battery sizing, more useful than any rule of thumb

Request your interval data from your electricity retailer before making any significant decisions about adding a battery or changing your tariff. Most retailers provide 12 months of interval data on request at no charge. Some provide it through their online portal in CSV format that you can analyse in a spreadsheet.

Written by

Jos Aguiar

Solar Evangelist

Passionate about making solar simple and accessible for every Australian household. Jos breaks down complex energy topics into practical advice so homeowners can make confident decisions about solar, batteries, and energy independence.

Learn more about Jos Aguiar