Sussan Ley has been savaged by a former Liberal leader for lacking strategy and leadership, as the party grapples with infighting and demoralising polling.

The opposition leader has been accused of failing to articulate a way forward for the Liberals, who are edging closer to a final position on their energy and climate change policy.

After a fortnight of damaging infighting and wild leadership speculation, Ms Ley has called a series of party room meetings to bed down a new approach to energy and emissions reduction.

As the party prepares to negotiate its final policy, former Liberal leader John Hewson has delivered a withering assessment of Ms Ley and the party she leads.

"She hasn't shown any clear strategy, or any strong capacity in terms of leadership," he told AAP.

Mr Hewson, who

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