The Queensland government warns it may block the Turnbull government's signature energy plan, saying that it won't sign any deal that undermines the state's ambitious renewable energy target.

Anthony Lynham, the state's energy minister, told Fairfax Media that backing for the National Energy Guarantee hinges on whether Queensland's target of making 50 per cent of its electricity renewable by 2030 will not be affected.

Labor's states and federal counterparts will discuss the National Energy Guarantee on Friday. Credit:Bloomberg

"That for us is the deal breaker," Dr Lynham said. "We are looking at it very carefully."

The minister's comments come as Labor state governments prepare to thrash out a common position on the energy policy with their federal counterparts ahead of an August 10 deadline set by the Turnbull government. All states and territories must sign up for the scheme, backed by Energy and Environment Minister Josh Frydenberg, to proceed.