THE BUSINESS CASE
Finance and the numbers
A starting estimate from your own bill, the ways a business can pay, and what the rebate schemes do at each size. The written proposal turns this into a case you can take to a board.
START WITH YOUR OWN BILL
Roughly what a system could do for your site.
Arithmetic from your bill, not a design: it uses a Canberra yield of about 1,450 kWh a year for every kilowatt of panels and the assumptions shown under the result. The interval data does the real work later.
A starting point
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- Generation a year
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- Used on site
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- Bill saving a year
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- Emissions avoided
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Assumes 28 cents a kWh for power you no longer buy, 5 cents for what is exported, and 0.68 kg of CO₂ per kWh of grid power. Demand charges, export limits, shading and the roof itself all change the answer, and the certificate scheme that applies depends on the size you end up with. We size from twelve months of interval data before we quote.
WAYS TO PAY
Own it, finance it, or buy the power.
Buy it outright
The simplest and usually the best return: you own the system and every kilowatt hour it makes from day one.
Finance through our partners
Spread the cost so the monthly repayment sits under the monthly saving. We introduce you to the lender; the decision is yours.
Ask about a lease or power purchase agreement
For larger sites, a third party can own the system and sell you the power at a fixed rate. We will tell you plainly whether it suits your site.
Tax treatment, depreciation and any instant write-off depend on your business: we do not give tax advice, and your accountant should have the final word on how you buy.
THE NETWORK AND THE PAPERWORK
What the network allows, and what we lodge for you.
Evoenergy (the ACT)
Inverters up to 20 kVA on a single phase or 20 kVA per phase on three phases connect under the standard rules; commercial systems up to 200 kVA of inverter capacity connect under the same requirements with AS/NZS 4777.2:2020 equipment. Export is 10 kVA across the site by default; exporting more needs a network assessment, which we apply for.
Essential Energy (regional NSW)
Larger systems are assessed case by case and the export limit depends on the local line. Rural single-phase and SWER supplies cap what a system can send back, so we design to the limit and use storage where it pays.
Standards and paperwork
AS/NZS 4777 and AS/NZS 5033 compliant installs by CEC-accredited installers, a signed certificate of electrical safety, the network connection agreement, and the certificate paperwork lodged for you.
A FEASIBILITY CHECK, FREE
Tell us about your site.
Send what you have; a recent bill and a rough roof size are enough to start. We come back with whether it stacks up, and what we would need to design it properly.