In short
- Solar suits a school's weekday load well: classrooms, computers and air conditioning run between about 9 and 3, when panels make the most.
- School holidays are the catch. For about 12 weeks a year most of the solar goes to the grid for a small credit, so a school uses less of its solar than a warehouse does.
- Size the system to the term-time weekday load, not the roof, and check who has to approve it before a quote is signed.
Yes, solar usually pays on an Australian school in 2026, but the holidays stretch the payback. In term, a school uses most of what its panels make, because the load and the sun peak together on hot afternoons. In the holidays the panels keep working and the school mostly doesn't, so a well-sized system typically uses around half to two thirds of its own solar across the year. Community centres and sports clubs are different again: their load comes in the evenings and at weekends, so they need an honest look at the sums before anyone signs.
| Quick facts | Solar for a school or community facility |
|---|---|
| Share of solar used on site | about 55–65% for a school; 30–40% for an evening-and-weekend facility |
| Part of the bill solar can cut | weekday daytime energy in term, and sometimes the demand charge |
| Part it can't cut | holiday weeks, evenings, and the fixed daily charge |
| Who approves it | the state education department for a government school; the board or system for an independent or Catholic school; the council or committee for a community facility |
| What to send | one recent bill; we get the interval data from it |
Why does solar suit a school?
Three things work in a school's favour.
- The load and the sun line up. Classrooms, computer rooms, canteen fridges and air conditioning all run in daylight, roughly 8 to 4 on a school day. Nothing much runs at night except servers, fridges and security lighting.
- The hot days are the big days. Air conditioning drives a school's bill in February, March and the fourth term, which is exactly when the panels make the most power.
- Schools have roof. Halls, gyms, covered outdoor areas and classroom blocks give plenty of north, east and west faces, and most are clear of shade.
The catch is the calendar. A school is closed for around 12 weeks a year, plus weekends, so the panels make power on roughly 180 days when the school is barely using any. That doesn't stop solar paying. It does mean the system should be smaller per square metre of roof than a warehouse's, and that the payback figure on a quote needs to show it has counted the holidays.
How much will solar save a school?
Here is a worked example with made-up figures. These are example figures, not our prices or a real site.
A Brisbane secondary school puts in a 100kW system, which makes about 145,000 kWh a year. Each kWh the school uses itself saves $0.28. Each kWh sent to the grid earns $0.05. The example price is $73,000 after the STC discount.
In term, on a school day, the school uses nearly all of the solar. At weekends and through the holidays it uses only what the fridges, servers and a few offices draw. Across the year that averages out to about 55% of the solar used on site.
- 79,750 kWh × $0.28 = $22,330, plus 65,250 kWh × $0.05 = $3,263. Yearly saving $25,590.
- At the example price of $73,000 that pays back in about 2.9 years.
The same 100kW system on a six-day warehouse uses about 80% of its solar, saves about $33,930 and pays back in about 2.2 years. The holidays cost the school roughly $8,000 a year on the same roof. That is the number to size the system around, not a reason to skip it.
| Site and pattern | Solar used on site | Yearly saving | Years to pay back |
|---|---|---|---|
| School, closed in the holidays | 55% | $25,590 | 2.9 |
| School with holiday programs or before- and after-school care | 65% | $28,927 | 2.5 |
| Community centre, mostly evenings and weekends | 35% | $18,922 | 3.9 |
| Sports club, mostly evenings | 30% | $17,255 | 4.2 |
These sums leave out demand charges, panels wearing slowly and price changes. The same table for other site types is on commercial solar cost.
A school can close part of the gap by running flexible loads in the middle of the day: pool pumps and heaters, hot water, EV chargers for staff, and any pre-cooling of halls before an afternoon event. Each of those moves a kWh from $0.05 to $0.28.
What size solar system does a school need?
Size it to the term-time weekday load, not the roof. Above that point, each extra kW makes power at the same hours as the first, on the same 180 empty days, and most of it goes to the grid.
On the Brisbane example, a school that trades up to 200kW because the hall roof has room would make about 290,000 kWh a year but use only about 35% of it, because the midday output runs far past what the classrooms draw. The second 100kW adds roughly $7,000 to $8,000 a year, well under a third of what the first 100kW earns. Whether that is worth it depends on the extra price in your quote. Divide the extra price by the extra yearly saving and you have its payback.
Two things change this answer. A boarding school, or a campus with a pool or an aged care wing, has a seven-day load and sizes more like a warehouse. And where the network limits exports, a bigger system may simply be told to turn down at midday, so the extra panels earn nothing at all. The interval data we get from your bill shows where the sizing point falls for your site.
Is a battery worth it for a school?
Usually not for storing holiday or weekend solar: the battery fills on day one of the holidays and has nowhere to send it until term starts. Where a battery can pay is the demand charge. Many schools set their monthly peak on the first hot afternoon of term, when every air conditioner starts together. A battery that trims that peak, or a control that staggers the air conditioning, can cut a charge that solar alone doesn't touch. See demand charges and commercial solar batteries.
For a community centre or sports club with an evening load, a battery moves daytime solar into the hours the building is actually used. The gain is $0.23 per kWh shifted, which is worth testing against the battery price over the years its warranty runs. In NSW, the Peak Demand Reduction Scheme gives an upfront discount on business batteries from 20 kWh.
Who has to approve solar on a school?
This is where school solar projects stall, so settle it before a quote is signed.
- Government schools don't own their buildings; the state education department does. In most states the department has to approve any rooftop system, and several states run their own school solar programs through which systems are installed, rather than the school buying one. A quote from an installer is the start of a conversation with the department, not a decision.
- Independent and Catholic schools decide for themselves, usually through the board or the diocesan system office. The approvals are the normal ones: the network connection application, and any heritage or planning condition on an older building.
- Community facilities are often council-owned, with the club or association as tenant. The owner has to sign off on roof works, and the saving goes to whoever pays the electricity bill, which is sometimes not the same party. Check the lease before anyone prices a system.
In every case, the network connection application decides the export limit and sometimes the system size. The installer lodges it; ask who pays the fee and how long it takes.
What does each state offer a school or community facility?
The federal STC discount applies everywhere, including to schools, and since 1 October 2026 it covers eligible systems up to 1MW. The states add little for solar itself, but several run programs specifically for government schools and council facilities.
| State | What matters for a school or community facility |
|---|---|
| NSW | No rebate on solar panels. The Peak Demand Reduction Scheme gives an upfront discount on batteries from 20 kWh to 30 MWh, larger when new solar goes in within 90 days. Public schools go through the Department of Education's own process. The Community Building Partnership grants fund local community infrastructure, which can include solar on a club or hall. |
| VIC | Victorian Energy Upgrades gives an upfront discount on business solar systems between 30kW and 200kW through an accredited provider. Independent and Catholic schools and community organisations can use it. Government schools go through the Department of Education. |
| QLD | No state rebate for commercial solar. State schools had solar installed through the Advancing Clean Energy Schools program and are managed by the Department of Education. Feed-in credits in the south-east are set by retailers, so check the contract before counting on holiday exports. |
| SA | No state government rebate. Some councils, such as the City of Adelaide, run their own incentives for business and community premises. Export value is weak, so size the system to the term-time load. |
| WA | No state rebate for business solar, and the buyback scheme doesn't cover commercial systems. Public schools can apply to the Schools Clean Energy Technology Fund for solar and batteries. |
| ACT | No solar rebate. The Sustainable Business Program co-funds energy efficiency upgrades up to $10,000; solar isn't a listed item. Public schools are handled by the ACT Education Directorate. |
| All states | Councils can apply to the federal Community Energy Upgrades Fund for solar and efficiency on council-owned facilities such as pools, halls and sports centres. |
We haven't checked Tasmania or the Northern Territory yet, so nothing here applies to them. Full detail and dates are on commercial solar rebates.
What should a school send for a proposal?
Just one recent bill, every page. Using the NMI on it, the team gets your interval data, which shows the term and holiday pattern, the weekend load and when the peaks happen. You don't need to request anything.
If you know them, these help too. Mention them in the form:
- Who owns the building and who has to approve roof works
- The calendar: holiday programs, before- and after-school care, a pool, boarding, evening hire of the hall
- Any existing solar on the site, because the 1MW limit counts everything behind the one meter
- Roof age and type: asbestos, heritage or a roof due for replacement changes the job
Our guide on how to read a commercial electricity bill explains what's on it.
What to ask your installer
- How much of the solar do you expect us to use across the year, and has that counted the holidays?
- What does the system save at our real rate per kWh, not a typical one?
- Who approves this: have you installed on a government school in this state before, and who lodges what?
- Does our network limit exports, and what happens to the midday power in the holidays?
- If you suggest a battery, what does it do to our demand charge, shown on its own line?
If you already have a quote in hand, compare it line by line with our checklist, starting with its holiday assumption. Otherwise, send a bill and an accredited installer prepares a costed proposal sized to how your site uses power. It's free, with no obligation.