Queenslanders could be asked to limit their use of air conditioning to prevent blackouts on the hottest summer days.
The Palaszczuk government's energy security task force has drawn up a Summer Preparedness Plan to deal with high demand for power during heatwaves.
Under the plan, residents and businesses could be asked to set their air conditioners at 26 degrees on the hottest days, only cool occupied rooms and turn off non-essential lights and pool pumps.
The opposition Liberal National Party has hit out at the plan.
"This just shows how out of touch the Palaszczuk Labor government is with Queenslanders by going out there telling them because of Labor policies and the incompetence of Labor government now they have to turn off their air-conditioning in the hottest months of the year," Shadow Treasurer Scott Emerson told ABC Radio.
The request to limit the use of air conditioners, which would not be compulsory, is considered to be a contingency measure, with the government assuring residents it had more than enough energy supply to meet expected demand.
It says Queensland power stations are ready to generate 11,445 megawatts of electricity, which is more than the predicted peak demand of 9790MW.
But Energy Minister Mark Bailey said despite having a secure energy supply Queenslanders should remain vigilant about their energy use.
"We can't change the fact that Queensland will continue to have heatwaves and extreme weather events, and while we cannot predict every risk scenario the task force has presented a way forward for the short and medium-term," Mr Bailey said in a statement.
The government is also encouraging residents to buy PeakSmart air conditioners, which allows Energy Queensland to manage usage during peak demand.
Mr Bailey said customers choosing PeakSmart won't have their air-conditioners switched off, they will run at a lower level similar to economy mode.
Residents purchasing the conditioners are eligible to receive up to $400 cashback from the government.