01
Designed around your home
Roof, usage, bill and backup priorities are considered together before equipment is selected.
Solar + battery + wholesale
More than solar.
Power that pays you back
Most solar stops at bill reduction. We go further, with solar + batteries matched to your usage and set up for a wholesale retail plan, so stored power can be exported when it is worth the most. Savings are modelled and vary by home.
4.9on Google
Australian owned and operated
AU
owned and operated
30%
federal battery support
5 min
wholesale price intervals
24/7
system monitoring
The Sunnn system
Your energy working as one system.
We design the panels, battery and wholesale controls together, so every part has a clear job from sunrise to the evening peak.
See how the market works- 01
Generate
Premium solar covers the home first and fills the battery with the day’s cheapest energy.
- 02
Store
An intelligent FoxESS battery holds that energy for the evening peak and keeps backup in reserve.
- 03
Trade
Wholesale-aware controls buy low, sell high and show what the system earned in real dollars.
Follow the sun
One day on the wholesale market.
5:00am · Sunrise
The grid wakes up hungry. Kettles, showers, aircon. Prices firm while your panels stretch.
Spot price
9.0c
Battery
25%
Earned today
$0.00
Keep scrolling, the day plays out as you go.
Illustrative render. The glowing battery is shown for effect.
Dispatch price · modelled day
5amnoon11pm
From design to switch-on
Built for the home you actually live in.
The result is not a bundle of products. It is one energy system, designed around when your home uses power and what you want it to do.
02
Installed as one system
Panels, inverter, battery and controls are planned to work together from the first day.
03
Ready for everyday life
Use your own energy, keep backup in reserve and make the evening price work in your favour.
Illustrative Sunnn photography. Your written design is based on your actual property and usage.
Meet SunnnLive calculator
What does this look like for your house?
An indicative range, modelled on 2026 AU retail rates and recent NEM dispatch spreads. It is a starting point only. Your written proposal uses your real interval data, your roof and your local retailer’s tariffs, and will differ from the figures here.
Where are you?
Average quarterly power bill$900 / quarter
$300$900$1.5k$2.4k
Battery size20.88 kWh · 3 modules
Fox ESS CQ7 stacks, kWh. Modules are 6.96 kWh each.
Indicative estimate · NSW · 20.88kWh
$2,755–$5,334/ year
An indicative Year 1 range, combining reduced grid purchases with modelled wholesale arbitrage. This is a preliminary estimate based on typical usage, not a quote.
Reduced grid purchases
$1,411–$3,094/yr
Wholesale arbitrage
$1,344–$2,240/yr
Your current bill is about $3,600 a year. A system does not remove a bill entirely: you still pay supply charges and buy power the system cannot cover. The top of this range sits above your current bill because arbitrage is export income earned on top of a reduced bill, not a further discount on it. It also assumes a battery this large suits a home of your usage, which the designer call would confirm.
This is a preliminary estimate, not a quote. It is based on typical usage for the bill size you selected. A site-specific proposal using your actual interval data, roof, shading and network tariff will differ, and may be higher or lower than the range shown.
This uses the same self-consumption model as the design software behind your written proposal. It assumes a 10 kW solar system paired with a 20.88 kWh battery, and modelled usage of about 9,407 kWh a year once supply charges are removed from the bill you entered. The range spans a night-heavy household at the low end to a day-heavy one at the high end, which is the biggest single driver of how much of your own solar you actually use. Savings from self-use can never exceed what you spend on energy.
Wholesale arbitrage requires a wholesale-passthrough retail plan (such as Amber or Localvolts); on such a plan your import price is also exposed to the spot price. Arbitrage figures are modelled from AEMO 5-minute dispatch data for December 2024 to November 2025, after charging cost and round-trip loss, and assume a 10 kW inverter.
Figures are modelled estimates, not guarantees. They exclude system cost, finance, maintenance, inverter replacement and battery degradation over time. Sunnn is not an electricity retailer and does not set market or retail prices.
Reviews on Google
What our customers say.
A selection of recent verified feedback from real Sunnn customers, shown unedited from our Google Business Profile. The rating shown is our overall Google rating across all reviews.
4.9
8 Google reviews
Andy Wale
a month ago
“Sunnn were very easy to work with. Communication was always promp and clear. I have recommended them to several friends and neighbours.”
Stuart Robertson
a month ago
“Got there in the end. Everything seemed to get in the way but James worked it out. He seems very knowledgeable and quick with a response or a fix. Ready to play at the power supply game now. With my existing solar system I was averaging costs of $120 per month, mostly connection fee. Now I'm excited to see I'm getting paid to supply power to the grid and getting free electricity.”
kelly smith
a month ago
“Great team and easy to deal with”
Daniel Green
a month ago
“I purchased a 42kw battery from Sunnn, they were a pleasure to deal with and offered the best deal in the market. With the three hours of free energy per day, i can virtually fully charge the battery and fulfill all my homes power requirements... incredible.”
Get started
Ready to start your solar journey?
Check your eligibility in 60 seconds, or talk to a Sunnn specialist about a system sized for your roof, your usage and the wholesale market.
- Backed by an established Australian business group
- Tier-1 panels and FoxESS batteries
- Systems configured to suit a wholesale retail plan
- 24/7 system monitoring
Contact
Hours
Mon to Fri8am to 6pm
Saturday9am to 2pm
ACN 690 774 317