The councils' partnership aims to find new ways of dealing with waste
A council is to discuss proposals which could see an incinerator set up as an example of how landfill waste can be burned for "green" energy.
Flintshire is one of five councils in a partnership which aims to manage waste in north Wales more efficiently.
The North Wales Residual Waste Treatment Project (NWRWTP) is using a Deeside Industrial Estate site to illustrate its business case.
The council is consulting the public on its waste management strategy.
At a special meeting at County Hall in Mold on Tuesday, councillors will consider the treatment project's outline business case in a confidential hearing.
Flintshire council chief executive Colin Everett is also lead chief executive for the project.
Waste partner councils
Isle of Anglesey County Council
Conwy County Borough Council
Denbighshire County Council
Flintshire County Council
Source: The North Wales Residual Waste Treatment Project
The partnership has said using landfill was no longer a sustainable option for dealing with the type of 'residual' waste that is impossible to recycle, or compost.
Later this year waste management companies will be invited to tender and propose solutions for managing this residual waste.
Any site, or sites, and the technology selected, would be subject to normal planning processes.
Work has already begun in speaking to local communities about the plan.
The views of residents from across north Wales will also be sought with a random telephone survey being carried out to gauge opinion on waste issues.
A series of consultation events and road shows are also planned.