Custom site built by The Agency Alternative for Solstice Energy Co. — this is what we'd build you.
A contemporary Brisbane home with a full rooftop solar array at golden hour
Solar & Battery Specialists • Brisbane & SEQ

Power bills are optional.

Solar and battery systems designed around your actual usage — with the savings, payback and rebates put in writing before you spend a cent.

2400+ systems installed
12 years in SEQ
5.0★ Google rating
200+ five-star reviews
CEC Accredited installer & designer
5.0★ from 200+ Google reviews
Tier-1 hardware certified partners only
10-yr warranty whole-of-system workmanship

The savings calculator

What's your roof actually worth?

Drag through a day to watch where your power would come from — then check the numbers underneath. Three questions, honest maths, no email required.

+

1:30 pm Panels running the home and charging the battery.

Your quarterly power bill$650
What are you weighing up?
Is anyone home on weekdays?
Estimated saving $2,720/year
Payback
6.6 yrs
New bill
$0 /qtr
Self-powered
100%

Sized for you: 10.5 kW solar + 13.5 kWh battery$17,900 installed

Includes the federal battery rebate: −$3,400 (steps down again within 6 months)

10-year position: +$9,300 ahead

How we got these numbers

SEQ solar yield ~4.2 kWh per kW per day · grid power ~33c/kWh · feed-in ~5c/kWh · daily supply charge ~$1.05 · battery rebate ~$252 per usable kWh (first 14 kWh). Your usage is estimated from the bill you set above; “Add a battery” assumes an existing 6.6 kW system. A formal quote models your actual twelve months of smart-meter data.

Get my exact numbers — free

Indicative only — real quotes are modelled on your smart-meter data, roof and switchboard, and we put the numbers in writing.

Clean Energy Council — Accredited Installer & DesignerTesla Powerwall — Certified InstallerEnphase — Gold InstallerFronius — Service PartnerREC — Certified Solar ProfessionalSigenergy — Authorised Partner10-Year Workmanship Warranty

Solar, minus the jargon

The four things worth understanding before you spend a dollar

kW vs kWh, in one line

kW is the size of the engine; kWh is what it actually produces (or stores). A 10.5 kW system in SEQ makes roughly 44 kWh a day; a 13.5 kWh battery holds about an evening’s worth.

Feed-in tariffs are basically dead

Exports earn ~5c a kWh; evening grid power costs ~33c. The money is no longer in selling solar — it’s in using your own. That’s why systems are now sized to your usage, and why batteries suddenly make sense.

The battery rebate, straight

The federal Cheaper Home Batteries program knocks roughly 30% off an installed battery — about $252 per usable kWh on the first 14 kWh. It steps down every six months until 2030. We do the paperwork; the discount comes off your quote.

Next step-down: under 6 months away

Payback, honestly

A well-sized solar system in SEQ pays for itself in 3–5 years; solar + battery in 5–8. Anyone promising two years is guessing with your money. We model payback from your meter data and put it in writing.

Installers fitting solar panels on a Queensland roof
Featured install — Wavell Heights: 10.5 kW, north-east split array

Solar systems

Solar sized to your meter data, not a sales quota

We design from twelve months of your actual usage — panel count, orientation and inverter chosen to kill the bill you really have, not the one on a brochure. Tier-1 panels, 25-year performance warranty, and the payback modelled in writing before you sign.

  • 10.5 kW system
  • $412 → $41 a quarter
  • payback on track: 4.8 yrs
Run your numbers
A wall-mounted home battery in a clean garage
Featured install — Carindale: 13.5 kWh battery + backup circuit

Home batteries

Stop selling sunshine for 5c and buying it back at 33c

A feed-in tariff pays cents; the evening grid charges dollars. A battery moves your solar from the day you make it to the night you use it — and the federal rebate currently covers about 30% of the cost. It steps down every six months, so the maths favours moving early.

  • 13.5 kWh battery
  • −$3,400 federal rebate
  • 92% grid independence
Run your numbers
An electric car charging in the driveway of a solar home at dusk
Featured install — Samford: 7 kW charger on a solar-priority circuit

EV charging

Charge the car on your own roof

A home charger installed on a solar-aware circuit charges when your panels are exporting — so the daily commute costs cents, not servo prices. Wired clean, metered separately, and ready for whatever you drive next.

  • 7 kW smart charger
  • ~$4 a full charge on solar
  • installed in half a day
Run your numbers

From bill to battery, without the sales circus

A five-figure decision deserves a calm, documented process. Here's exactly what happens.

STEP 01

Free assessment

We pull twelve months of your smart-meter data (or read your bills) and look at your actual roof on satellite — no ladder, no sales visit.

Day 1
STEP 02

Design + payback, in writing

A fixed, itemised quote with the modelled annual saving, payback and rebates on page one. No pressure, no expiring "deals".

Days 2–5
STEP 03

Install day

Our own CEC-accredited crews — most homes are done in a single day, tested, cleaned up and switched on.

Week 2–3
STEP 04

Rebates filed, monitoring live

We lodge the STC and battery-rebate paperwork and set up your monitoring app. You watch the first bill shrink; we check in at 90 days.

Week 3+

The de-risked version of a big decision

Every Solstice system includes

A big-ticket decision should come with the risk taken out. This is standard, not an upgrade.

Certainty

  • Savings + payback modelled on your meter data
  • Fixed itemised quote — no variations
  • All rebate paperwork lodged for you

Hardware

  • Tier-1 panels, 25-year performance warranty
  • CEC-approved batteries + inverters only
  • Full monitoring — see every kWh live

Aftercare

  • 10-year whole-of-system workmanship warranty
  • 90-day performance check-in against the model
  • Blackout backup circuit configured (battery systems)
Book a free assessment
$0-deposit green loansfrom 6.99% — repayments usually under the savings
25-yearpanel performance warranty, transferable if you sell
Rebates handledSTCs + battery rebate lodged by us, off the quote up front

Numbers people are happy to quote

Real words from SEQ homes running on their own roofs.

5.0★ from 200+ Google reviews
★★★★★
“They modelled $2,600 a year in savings from our smart-meter data. Twelve months in we’re at $2,740. First company that under-promised.”
Rachel T.Wavell Heights
★★★★★
“Our last bill was $38. It used to be over $400. The app is dangerously addictive — I check the battery like it’s the cricket score.”
Mark & Lisa D.Carindale
★★★★★
“Three quotes, and Solstice was the only one that asked for our usage data before naming a price. That told me everything.”
James O.Paddington
★★★★★
“Storm took the street out for six hours — our lights stayed on. The battery backup alone was worth it.”
Priya N.Samford
★★★★★
“Install crew were their own people, not subbies. Done by 2pm, roof spotless, and they walked me through the rebate paperwork they’d already filed.”
Con S.Manly West
★★★★★
“The payback estimate was 4.8 years in writing. On our current bills it’s tracking at 4.5. Can’t argue with the numbers.”
Annette W.North Lakes

Asked before every install

Is my roof even suitable?

Most are. We check orientation, pitch, shading and switchboard capacity from satellite imagery and photos before anyone climbs a ladder — and if solar genuinely doesn’t stack up on your roof, we’ll tell you that in writing too.

How accurate is the calculator on this page?

It’s an honest indicative model — SEQ sun-hours, current usage and feed-in rates, today’s rebate. Your formal quote is modelled on your twelve months of smart-meter data, which is why the number we put in writing is one we’ll stand behind.

What does the federal battery rebate actually cover?

Roughly 30% off the installed cost of a CEC-approved battery between 5 and 100 kWh — about $252 per usable kWh on the first 14 kWh. It applies at the point of sale (we lodge it; you never front the money) and it steps down every six months until 2030.

Will the battery run the house in a blackout?

Yes — every battery we install gets a backup circuit covering the essentials (fridge, lights, internet, a few power points). The switchover is automatic and takes a fraction of a second.

What happens in a week of cloud?

Panels still generate 30–60% in overcast weather, the battery buffers the evenings, and the grid is always there as the fallback. The model on your quote uses real Bureau weather-year data, cloudy weeks included.

Free assessment

Get your exact numbers, in writing.

Tell us what you're weighing up and we'll model it on your real usage — savings, payback and rebates on page one of the quote. No pressure, no expiring “deals”, no drone salesmen on your roof.

Or talk to a human: (07) 3000 0000

Demo form — in a live build this goes straight to the team, with your calculator settings attached.