Cutting the renewable energy target (RET) will leave Australians reliant on natural gas and drive up electricity bills, a group of consumer and community advocates say.
They have written to Prime Minister Tony Abbott urging him to reject the recommendations of a review that called on the government to cut the target.
The economic, environmental and social impacts of the RET scheme were well-documented and overwhelmingly positive, states the letter from groups including the Australian Council of Social Service, the Brotherhood of St Laurence, the Consumer Utilities Advocacy Centre and the Clean Energy Council.
"If the RET is cut, Australia's greater reliance on gas-fired power will increase the cost of power for all energy users," they say.
The government is considering a report by businessman Dick Warburton, which questions the target of 20 per cent of electricity generation from renewable sources by 2020.
A formal response is expected in coming weeks.
The RET has been a bipartisan policy and Mr Abbott insists his government still supports renewable energy.