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Rooftop solar now Queensland’s biggest power station

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One Step Off The Grid

The 1,805MW of solar PV capacity on the rooftops of Queensland homes and business now amount to be the biggest power station by capacity in the state, overtaking the 1,780MW of the Gladstone coal fired power station.

The milestone was reached after homeowners and business owners in Queensland added 25MW of rooftop solar capacity  in the month of March, the highest since the premium feed-in tariffs of 2012, when households were offered 46c/kWh for their solar power.

Now, they get around 6c/kWh (some smaller retailers offer 10c/kWh) for their exports back to the grid, but the falling costs of rooftop solar, the prospect of competitive battery storage, and the soaring costs of grid power appear to be driving another solar boom.

The likely passing of the milestone was flagged last month by energy minister Mark Bailey, who told a battery storage conference in Brisbane that:

“The combined solar rooftops are now the second largest power generator, just behind the 1680 MW Gladstone Power Station – which emits approximately 11.8 million tonnes of greenhouse gas each year, versus zero from the sun and our second biggest generator.

“So Queensland, as a significant renewables market, is on the transition path. We see our role as a state government as being a facilitator in that transition.”

Queensland is not actually the only state or territory where rooftop solar is the biggest power station. In the ACT, there is 59MW of rooftop solar, but the only competition within the boundaries of the ACT is the 20MW Royalla large-scale solar farm.

There are no gas or coal-fired generators within the boundaries of the national capital, and the ACT is now well on its way to sourcing the equivalent of 100 per cent of its electricity needs from renewable energy by 2020, after contracting a series of new solar and wind farms across South Australia, Victoria and NSW.

In Western Australia, there is 696MW of rooftop solar, but it falls short of the 854MW of the ageing Muja power station, while in South Australia there is 722MW of rooftop solar, still well short of the Torrens Island gas fired generator of 1280MW, although half of that capacity comes from the Torrens Island A, which is 50 years old and tipped for retirement some time soon.

This article was originally published on RenewEconomy’s sister site, One Step Off The Grid, which focuses on customer experience and ambitions with distributed generation. To sign up to One Step’s free weekly newsletter, please click here.  

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  • George Darroch

    This is huge. Give it a few years and this will be the case in every state, even Vic and NSW.

    By rights it should be the case in the Territory, but bad Liberal government has held them back.

  • Ray Miller

    Great, Congratulations Queenslanders for voting with your wallets to invest in clean renewable energy. It’s been 17 years since the first government PV rebates were offered and the first grid-connect systems were operational under the scheme. A group of three households in south-east Queensland actively fought for over 8 months to have reasonable grid-connection agreements with the distributor Energex. Energex, and some sectors of the state government at the time, were really concerned that solar would take off in a big way and they were not supportive of making it easy, in one sense typical of the struggle still persisting today throughout the NEM. These three small PV systems installed in 2000 were, for a time, registered power stations on the National Network. The rules subsequently changed excluding small systems from being registered as power stations. But I wonder whether the current situation calls for a change? What if collectives of small rooftop PV systems could be and encouraged to registered as power stations and trade on the national market? Small trials are taking place at present but without any serious NEM support or recognition of the possibilities. We, the people with small renewable systems, are now significant shareholders in energy generation and soon battery storage technologies, and it is about time the NEM rule makers and operators give significant shareholders recognition and our rightful place in the market and operation in the NEM. If Queensland largest generator at 1,805MW is not enough what is? What if we collectively withdrew our energy source on a hot day in summer?