In the wake of last month's re-election of Gladys Berejiklian's Liberal-led government, prospects have brightened for a sudden - and even surprising - narrowing of the gap between state and federal energy policy.

The elevation of Rob Stokes to head the key Planning & Industry cluster brings to the fore a Minister known for his support of renewable energy.

Having Matt Kean - the head of the dominant moderate faction - run the cluster's Energy and Environment portfolio, will bring political nous to Stokes' intellectual clout, a senior NSW Liberal source says.

Sunset on the climate wars? State and federal energy policies could soon be more coordinated than they have been for decades. Credit:Sitthixay Ditthavong

"A great era of bipartisanship" is possible, this source says - provided Labor takes over in Canberra.