The federal government has moved quickly to shore up support from the state and territories for its new energy plan.
Energy Minister Josh Frydenberg held a phone hook-up with his state counterparts on Tuesday night, hours after the government unveiled plans for a national energy guarantee.
The conference included a briefing from the Energy Security Board, which later provided similar advice to senior federal Labor figures.
Facing a hostile reception from the Labor states, Mr Frydenberg said it was "quite bizarre" for them to be openly critical when they had not gone through the detail.
"Of course, this is all new to them," he told ABC radio on Wednesday.
Mr Frydenberg noted that leading business and industry organisations had backed the plan.
South Australia Premier Jay Weatherill has criticised the NEG as a "coal energy target" while Queensland Energy Minister Mark Bailey is threatening his state could go it alone.
"We are saying to Canberra we are committed to our state-based 50 per cent renewable energy because it works," Mr Bailey said.
Victorian Energy Minister Lily D'Ambrosio said Mr Frydenberg had no evidence to back up government predictions household power bills could be cut by $115 a year by 2030.
"Minister Frydenberg confirmed last night that there's no analysis to support this, what they want us to believe is that this will give us more supply, greater reliability and lower prices," she told the ABC.
Mr Frydenberg said the predictions were based on advice agreed on by the major energy agencies, which he described as "pre-eminent experts".
"This is a new mechanism ... and it will be modelled, and that advice will be provided to the states."
Prime Minister Malcolm Turnbull said the cost figures were based on estimates of a 20-25 per cent reduction in wholesale generation.
"I can guarantee that the people that are giving those figures are the best informed and the most knowledgeable in the industry," he told ABC radio.
"I think it is about time we took the politics and the ideology and the slogans out of this debate and focused on that expert advice."
