Queensland's generous solar feed-in tariff – which allows about 200,000 households to pay next to nothing for electricity until 2028 – will leave a further $770 million dent in the state budget bottom line after the Palaszczuk government agreed to ensure the full cost wasn't passed onto non-solar households.

Despite a scathing Queensland Productivity Commission report last year that predicted it will cost $3 billion over the next decade, the Palaszczuk government has refused to close down the scheme, which was introduced by the Bligh government in 2009.