Commercial solar in Darwin

    A 100 kW commercial system in Darwin earns about $28,416 off upfront in federal certificates and makes about 154 MWh a year. Systems up to 1 MW now qualify, so the discount scales with your roof.

    We don’t install. We give you the numbers for Darwin, then hand you to Green, our solar partner, who designs and installs commercial systems across the Northern Territory and the rest of Australia.

    What commercial solar is worth in Darwin

    For systems installed in 2026, using the Clean Energy Regulator’s zone 2 rating for Darwin (1.536 MWh per kW per year) and $37 a certificate.

    Commercial solar rebate and output by system size in Darwin
    SystemOutput a yearCertificatesUpfront discountIndicative saving a year
    30 kW46 MWh230$8,510$6,700
    99 kW152 MWh760$28,120$22,000
    250 kW384 MWh1,920$71,040$55,600
    500 kW768 MWh3,840$142,080$111,100
    1 MW1,536 MWh7,680$284,160$222,300

    Savings are scaled from the federal government’s worked example (a 250 kW system saving about $50,000 a year, as reported) by Darwin’s solar output. Your real saving depends on how much you use on site and your tariff. Up to 100 kW uses the small-scale deeming period; over 100 kW gets a fixed 5 years.

    Each kW in Darwin is rated to make about 30% more power than the same kW in Melbourne or Hobart.

    Business power prices in Darwin

    In the Northern Territory, small business electricity prices are set by the state rather than the national default offer, so we don’t show a figure here. The rule still holds: solar you use on site saves your full usage rate, while exports earn far less, so businesses with daytime load pay back fastest.

    The local network is Power and Water. Larger systems need its connection approval, which is often the longest step, so Green starts that application early.

    Get a commercial solar quote in Darwin

    Green, our solar partner, designs and installs commercial systems in Darwin, from 30 kW to 1 MW, and handles the certificates and network approval. Free, no obligation, and we earn a commission only if you go ahead.

    Get a commercial quote

    Commercial solar in Darwin: questions

    How much is the commercial solar rebate in Darwin?
    It comes as federal certificates (STCs) that your installer takes off the price. In Darwin (CER zone 2), a 100 kW system installed in 2026 earns 768 certificates, about $28,416 at $37 each. A 250 kW system earns about $71,040. The certificate price moves, so treat these as estimates.
    How much power does commercial solar make in Darwin?
    The Clean Energy Regulator rates Darwin at 1.536 MWh per kW per year, so a 100 kW system is deemed to make about 154 MWh a year. Real output depends on roof direction, shading and tilt.
    Does the commercial solar rebate drop in the new year?
    For systems up to 100 kW, yes: the deeming period shortens each 1 January, so a 99 kW system in Darwin drops from about $28,120 off in 2026 to about $22,496 in 2027. Systems over 100 kW (up to 1 MW) get a fixed 5-year deeming period, so their certificate count doesn't drop in 2027.
    Who installs commercial solar in Darwin?
    We pass enquiries to Green, our solar partner, which designs and installs commercial systems across Australia, including Darwin. You get one installer, not a lead auction, and we earn a commission only if you go ahead.

    Commercial solar in other cities

    James Baker

    Reviewed by James Baker, Founder, EnergyPlans.com.au. Data last verified 12 November 2026. Methodology.