The former Prime Minister's request came after AGL announced on Monday it had knocked back the purchase request from Alinta Energy because it wasn't in its best interests, despite federal government pressure.

Mr Abbott accused AGL of "striking against the national interest" in the same way as a militant union.

"My very strong view given that the federal government has effectively now got responsibility for energy security, the government should compulsorily acquire this power station for the price Alinta were prepared to pay and then it should sell it to Alinta,” he told 2GB Radio.

But, a disappointed Josh Frydenberg said he and the Prime Minister had been consistent they wanted a commercial negotiation, not a takeover.

“It’s not Liberal values for governments to compulsory acquire assets such as these,” he told reporters in Canberra.

Instead, he was critical of AGL turning down the “significant” offer from Alinta.

“You don't have to be Einstein to recognise that AGL would benefit from not having another competitor in the market,” he said.

The minister argued the company said Liddell was of zero value in its investor presentation when it acquired it in 2014, but now says the $250 million upfront offer from Alinta undervalues future cash flows.

He also wants to see the company pass on lower wholesale prices soon.

“We will be watching very closely,” Mr Frydenberg said ahead of a major competition watchdog review being released later next month.

Former Deputy Prime Minister Barnaby Joyce also wasn't impressed at AGL's decision, warning Australians already can't afford their power bills.

“We need to grab AGL, cart them back in and say: ‘This is BS, you’re taking us for a ride, you think we’re fools’,” he said.

“The Australian people are not - they are not going to pay for your market manipulation which is what is coming next.”

Labor doesn’t believe extending the life of Liddell through a purchase is the answer.

“We know that the solution to Australia’s energy and climate needs isn’t to extend ageing coal-fired power plants, it’s to invest in a whole suite of different renewables,” frontbencher Andrew Leigh told Sky News.

Hunter MP Joel Fitzgibbon also weighed in on the issue.

“I welcome AGL’s rejection of Alinta Energy and Chow Tai Fook Enterprises’ offer to buy the Liddell power station,” he said.

“It’s good news for the Hunter region.

“Liddell [power station] is fast approaching the end of its economic life and AGL’s plans to build new generation capacity are the only way to maintain and grow long-term jobs in the region.

“AGL will build new capacity through the upgrade of the Bayswater coal-powered generator and the development of new gas, large-scale solar and pumped-hydro generation along with battery storage technologies. 

“The Liddell power Station asset is crucial to AGL’s plans and the Prime Minister must now get out of the way and allow AGL to progress its plans.”

Mr Fitzgibbon said Malcolm Turnbull’s recent interventions were frustrating – and delaying those plans.

“AGL’s investment will allow the Hunter region to maintain its status as the ‘power house’ of NSW,” he explained.

“It will create jobs and allow us to make the transition to a lower-carbon economy.

“In the Hunter we have the workforce, the land, the resources and the transmission lines.  

“The only thing holding back our aspiration is the Turnbull government and its rabid right wing.”

The Greens also welcomed the decision of AGL, saying keeping coal-fired power stations open was a recipe for more intense bushfires, worse heatwaves and more deaths.