Load-matched engineering
We model 12 months of your interval meter data to size a system that offsets your daytime demand, not a round-number estimate.
Commercial
From 30kW to 500kW+ rooftop systems for warehouses, factories, retail and agribusiness — engineered against your interval data, modelled for return, and available outright, financed, or under a Power Purchase Agreement (PPA) with no upfront capital.
What we deliver
A commercial install is not a bigger residential kit. It is engineered against your network tariff, your interval demand and your roof's structural rating, then installed by accredited installers working under licensed electrical contractors to AS/NZS 3000, 5033 and 4777.
We model 12 months of your interval meter data to size a system that offsets your daytime demand, not a round-number estimate.
Storage is configured against your network tariff to shave peak demand (kW) — where the real bill savings often sit.
Distributor connection pre-approval, export limits, metering upgrades and STC/LGC assignment lodged by us end-to-end.
Optional essential-loads backup so refrigeration, server rooms and critical process equipment ride through grid outages.
Per-string monitoring and a dashboard you and your accountant can both read — kWh generated, consumed, exported and saved.
Buy outright, arrange finance, or take a PPA and pay only for the electricity the system produces — no upfront capital.
Power Purchase Agreement
A Power Purchase Agreement (PPA) lets you put solar on your roof with no upfront capital. Instead of buying the equipment, you buy the electricity it generates at an agreed rate. Here is what that actually means for your business.
A Power Purchase Agreement (PPA) is a contract under which we design, supply, install, own and operate a solar (and optionally battery) system on your premises, and you agree to buy the electricity it generates at an agreed per-kWh rate — usually for a fixed term such as 7–15 years. You pay only for the energy produced, not the equipment.
There is no upfront capital outlay and no maintenance responsibility — we own and maintain the system. You get a lower, predictable electricity rate than your retailer, often with annual escalation caps, so you hedge against wholesale price volatility without touching your balance sheet.
You continue to pay your retailer for any energy you draw from the grid (including at night and during peak demand), plus your network and metering charges. The PPA only bills the kilowatt-hours the system delivers to your site; any surplus exported to the grid is handled per the agreed terms.
At the end of the PPA term the options are presented to you, and the choice is entirely at your discretion: purchase the system outright at the agreed fair market value, extend the agreement, or have the system remain the property of the equipment supplier, who can remove it. Any early buy-out options are set out in the PPA contract itself, not on this page.
A PPA is a long-term contract and is not the right fit for every site — for example, if you plan to sell the premises before the term ends, or if your load is predominantly at night. We will model PPA vs outright purchase vs finance for your actual usage and show the crossover, so the decision is yours, not ours. Any PPA figures we provide are estimates based on current retailer tariffs and your historical consumption; tariffs and certificate values change, and we never present an estimate as a guaranteed return.
Three ways to pay
Pay for the system and own it from day one. You keep 100% of the STC/LGC certificate value, all energy savings and any export revenue.
Spread the cost over a fixed term through an independent finance provider, subject to their approval. Sunquest is not the credit provider and does not offer deferred payment arrangements.
Zero upfront capital. We own and maintain the system; you pay an agreed rate for each kWh generated. Best when cash flow or capex approval is the constraint.
Third-party finance options may be available to eligible customers. Sunquest Energy Pty Ltd does not provide consumer credit or deferred payment arrangements and is not the credit provider. Finance is voluntary and subject to the relevant finance provider's eligibility requirements, credit assessment, approval, fees, charges and terms and conditions. Customers may choose to pay the outright purchase price or arrange their own finance. We align our practices with the New Energy Tech Consumer Code (NETCC) and do not provide financial advice; if finance is involved, consider getting independent advice.
No obligation
Book a free site assessment. We'll model your usage, show you the certificate discount you qualify for, and give you a fixed written quote with no obligation.
Request a quote