Brisbane and most of Queensland are in STC Zone 3, with Zone 1 and 2 multipliers in the far north and inland regions.
Queensland's commercial solar incentive is almost entirely the federal STC scheme; the state does not run a VEEC-style certificate program or a PDRS-style battery rebate. What varies inside Queensland is the STC zone. Brisbane (4000) sits in STC Zone 3, a 1.382 multiplier; a 100 kW system installed in 2027 earns roughly 552 STCs over the 4 years left in the scheme. Push into the outback and the multiplier rises: Birdsville (4482) sits in STC Zone 1 at 1.622, about 17% more STCs for the identical system, because CER zone boundaries track measured solar irradiance rather than distance from Brisbane.
For batteries, Queensland businesses use the federal Cheaper Home Batteries Program rather than a state scheme. It weights the first 14 kWh of usable capacity at full value, the next 14 kWh at 60%, and the remainder up to 50 kWh at 15%, with the per-kWh factor stepping down over time: 6.8 STCs per weighted kWh for installs from May–Dec 2026, stepping down every six months to 2.1 by Jul–Dec 2030. It is a national program rather than something specific to Queensland, but it is the closest equivalent the state has to NSW's PDRS.
QLD commercial solar installations can access the following incentive schemes.
STC eligibility moved from 100 kW to 1 MW of site capacity for solar installed from 1 October 2026 (Mid-scale Solar Regulations, registered 17 September 2026). The 100 kW limit still governs anything installed before that date, and capacity above the first 1 MW earns LGCs. Read the announcement.
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The zone multiplier determines how many STCs are generated per kilowatt of installed capacity. A multiplier of 1.382 means a 100 kW system in Brisbane installed in 2027 generates 552 STCs over the remaining deeming period (4 years to 2030), worth approximately $21,313 at current certificate prices, less a 3% provider fee.
Large-scale Generation Certificates provide annual recurring revenue for solar capacity above 1 MW (above 100 kW for installs before 1 October 2026) in Queensland. Unlike the one-time STC discount, LGCs generate income every year based on actual electricity production.
One LGC is created per megawatt-hour (MWh) of generation. At a current net price of $7/LGC (the market less a 5% provider fee), a 150 kW system in QLD generating approximately 211 MWh per year would earn roughly $1,503/year in LGC revenue.
The 99 kW design ceiling is disappearing. Here is what solar professionals need to re-size, re-quote across the 1 October start date, and add to proposal templates before then.
Above the STC ceiling (1 MW of site capacity from 1 October 2026, 100 kW before), solar earns LGCs annually instead of an upfront STC discount. Here is how the scheme works and what a certificate is really worth in 2026.
Brisbane (4000) sits in STC Zone 3, a 1.382 multiplier. Most of the Queensland coast and south-east corner share this zone.
CER zone boundaries follow measured solar irradiance, not distance from the coast. Remote outback towns like Birdsville (4482) sit in STC Zone 1, the top multiplier band at 1.622, about 17% more STCs than Brisbane for an identical system.
No, Queensland does not run a state-level battery certificate scheme. Queensland batteries use the federal Cheaper Home Batteries Program instead, which weights the first 14 kWh of usable capacity at full value, the next 14 kWh at 60%, and the remainder up to 50 kWh at 15%, with the per-kWh factor stepping down every six months to 2030 (6.8 STCs per weighted kWh for installs from May–Dec 2026, stepping down every six months to 2.1 by Jul–Dec 2030).
Yes, solar capacity above 1 MW (above 100 kW for installs before 1 October 2026) earns Large-scale Generation Certificates, one per MWh of actual generation, paid annually. The system is split: upfront STCs up to that ceiling, LGCs on the balance.
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