How to read your electricity bill and know if solar makes sense

This guide explains how to read an Australian electricity bill, find the numbers that matter for solar, and use them to assess whether solar makes financial sense for your household. It covers daily consumption in kWh, supply charges, tariff types, feed-in tariffs, and how to calculate a rough payback estimate before you speak to an installer. References: AEMC, Australian Energy Regulator, energy.gov.au.

Key findings

• Your average daily consumption in kWh is the single most important number on your bill for assessing solar. Most Australian households use between 15 and 20 kWh per day.¹
• The national average residential electricity rate is between 30 and 43 cents per kWh in 2026. Prices vary significantly by state: SA is the most expensive, followed by NSW, then QLD and WA, with VIC and TAS generally the lowest on the NEM (National Electricity Market, which covers all states except WA and NT).²
• Standard feed-in tariffs in 2026 range from 3 to 10 cents per kWh. That is what your retailer pays you for surplus solar sent to the grid. You pay 30 to 43 cents to buy electricity back. So the more solar you use yourself rather than export, the better.³
• If you add a battery, you can join a Virtual Power Plant, which is a network of home batteries that export energy to the grid together during peak demand. Some programs pay 20 to 55 cents per kWh during these events, turning your battery into an income stream.⁴
• Solar makes the most financial sense for households that use electricity during the day, or who pair panels with a battery for evening use.
• You can assess your solar suitability in under five minutes using three numbers from your bill. This guide walks you through it.

Your bill is telling you something. Most people don't know how to read it.

Australian electricity bills are badly designed. They bury the most useful information in small print on page two or three, and lead with numbers that look alarming but don't tell you much about whether solar would help.

This guide shows you exactly where to look, what the numbers mean, and how to use them to make a quick, honest assessment of whether solar makes sense for your home, before you speak to anyone trying to sell you something.

The three numbers that matter

Most of the information on your electricity bill is not relevant to your solar and battery decision. Three numbers are. Here is where to find each one.

1. Daily consumption (kWh)

Usually labelled "average daily usage" or "daily consumption" on your bill. This is the most important number. Write it down. If it is not shown directly, divide the total kWh for the quarter by 90.

2. Usage rate (cents per kWh)

The rate you pay per unit of electricity, shown in the charges section. In 2026 this is typically between 30 and 43 cents per kWh depending on your state and plan. If you are on a time-of-use tariff, a plan that charges different rates depending on the time of day, you will have peak, shoulder, and off-peak rates. The peak rate is the one solar replaces most effectively.

3. Supply charge (daily)

The fixed daily fee for being connected to the grid, regardless of how much electricity you use. Typically 80 cents to $1.20 per day. Solar does not reduce this charge, which is why you will still receive a small quarterly bill even after installation. Going fully off-grid is the only way to avoid it. SolKind has installed off-grid systems and can talk through whether it makes sense for your situation.

Most Australian households use between 15 and 20 kWh per day.¹ Homes with ducted air conditioning, electric hot water, a pool, or an EV will be higher. If your daily usage is below 10 kWh, solar may still make sense but the payback period will be longer.

What your tariff type means for solar

Your tariff structure affects how much value you get from solar. There are two main types in Australia.

Flat rate tariff

You pay the same rate per kWh regardless of when you use electricity. Solar works well on flat rate tariffs because every unit you generate and use directly saves you the full rate, typically 30 to 43 cents per kWh. Best approach: maximise self-consumption by running appliances during daylight hours.

Time-of-use (TOU) tariff

You pay different rates depending on when you use electricity. Peak rates (typically late afternoon and evening) are higher. Off-peak rates (overnight) are lower. Solar generates during the day, which is usually a shoulder or off-peak period on TOU plans. Best approach: use solar generation during the day, add a battery to cover peak evening usage at 35 to 45 cents per kWh.

A quick solar sense-check using your bill

You don't need a solar quote to do a rough assessment of whether solar makes financial sense for your home. Here's a simple three-step check.

1. Find your daily consumption

From your bill, find your average daily kWh. If it is 18 kWh and you pay 32 cents per kWh, your daily electricity cost is around $5.76, or roughly $2,100 per year, not including the supply charge.

2. Estimate what solar could offset

A well-sized 6.6kW system in most Australian locations generates 24 to 30 kWh per day in summer and less in winter. If you use electricity during the day, particularly if you have air conditioning, you might self-consume 50 to 70% of what you generate. Multiply the kWh you would self-consume each day by your usage rate, then by 365. That gives you a rough annual saving in your own numbers rather than an industry average.

3. Estimate your payback

Divide the installed cost of the system by the annual saving you just calculated. That is your rough payback in years. We are not going to publish a price range here, because system cost depends on your roof, your switchboard, your usage and the components chosen, and any number we quoted without seeing your property would be a guess. Ask any installer for a fixed price after a discovery conversation, then run this calculation yourself against their number.

When solar makes strong financial sense

Solar is not right for every household at every point in time. It makes the strongest financial case when several of these conditions are true.

• Daily usage above 15 kWh, more consumption means more opportunity to offset grid purchases with solar generation.
• Significant daytime electricity use, air conditioning, working from home, appliances run during the day all increase self-consumption and returns.
• Usage rate above 28 cents per kWh, the higher your rate, the more each unit of self-consumed solar is worth.
• North-facing or east-west roof with limited shading, generation depends heavily on roof orientation. A site assessment will confirm what's achievable.
• Plans for an EV, battery, or pool, future load increases strengthen the case for solar now. An EV alone can add 5 to 15 kWh of daily demand.
• Intention to stay in the property for several years. Solar pays back over years, not months. The longer you benefit from the system, the stronger the return.

When to wait, or think carefully

There are situations where solar is worth considering more carefully before committing.

If your daily consumption is below 10 kWh and you're rarely home during the day, the returns will be lower and the payback period longer. A smaller system might still make sense, but the economics are less compelling.

If you're planning to sell the property within a few years, solar adds value, but you may not recoup the full cost through savings before you sell. The system does transfer to the new owner as an asset.

If your roof has significant shading from trees or neighbouring structures, generation will be reduced. This can sometimes be addressed through panel placement, but it requires a proper site assessment to quantify.

What to do next

If your bill suggests solar could make sense, the next step is a system design built around your actual usage. Not a quote based on your roof size. A design that starts with your daily kWh figure and works from there.

Read our guide on how to spot an undersized solar quote before you sign. It tells you what to check before you commit to any installer.