Estimate Large-scale Generation Certificates (LGCs) and annual certificate revenue for a commercial solar system above 100 kW. An announced federal change is set to extend STC eligibility to 1 MW for installs from 1 October 2026, subject to regulations.
Annual LGC revenue
$15,750
Certificates / year
350
Annual production
350 MWh
Is this for your own site, or do you run a solar business?
Estimate only. LGCs are created annually on metered generation; certificate prices fluctuate.
How LGCs are calculated
Under the federal Large-scale Renewable Energy Target, a solar power station above 100 kW creates one LGC for every megawatt-hour of electricity it generates, verified against meter data each year until the scheme ends in 2030. Annual revenue = system size × specific yield (site production per kW) ÷ 1,000 × the LGC market price. Unlike STCs, LGCs are not deemed upfront; they pay out as an ongoing annual revenue stream. Announced 5 August 2026, the federal government intends to expand STC eligibility from 100 kW to 1 MW for solar installed from 1 October 2026, subject to regulations being made. Until those regulations are finalised, the 100 kW threshold between STCs and LGCs still applies.
Frequently asked questions
Who can claim LGCs for solar?
LGCs apply to solar power stations above 100 kW registered under the federal Large-scale Renewable Energy Target. Systems at or below 100 kW earn upfront STCs instead. Announced 5 August 2026: the federal government intends to expand STC eligibility from 100 kW to 1 MW for solar installed from 1 October 2026, subject to regulations being made. The regulations were not registered at the time of writing, so the 100 kW limit is still the law today; the Amperage calculators price the announced 100 kW to 1 MW band and flag those figures as pending regulation.
How are LGCs calculated?
One LGC is created for every megawatt-hour of electricity the system generates, verified against meter data each year until the scheme ends in 2030.
How much is an LGC worth?
LGC prices float with the certificate market; the calculator defaults to $45; adjust it under Advanced to match your quote or broker pricing.
Can a system earn both STCs and LGCs?
Not on the same capacity. Systems at or below 100 kW take deemed upfront STCs; above 100 kW the system registers as a power station and earns LGCs annually. Amperage models the crossover when sizing. Announced 5 August 2026: the federal government intends to expand STC eligibility from 100 kW to 1 MW for solar installed from 1 October 2026, subject to regulations being made. The regulations were not registered at the time of writing, so the 100 kW limit is still the law today; the Amperage calculators price the announced 100 kW to 1 MW band and flag those figures as pending regulation.