Corby will become "Britain's dumping ground" if the distance rubbish can be brought in to a waste processing plant from is increased, according to one councillor.
Rob McKellar is opposing proposals to extend where waste can come from into the unbuilt Gretton Brook Road site.
He said he hoped if developer Drenl's plans were rejected it would mean the plant would become unviable.
Drenl chairman James Brathwaite said rubbish would be collected locally.
Part of the current planning permission is that waste taken to the plant should come from within a 30 mile radius.
Drenl wants to increase that distance to a 90 minute drive.
In a fresh planning application, the company's agents GP Planning said the restrictions are causing "considerable financial difficulties in securing the funding to continue construction of the facility."
Conservative opposition deputy leader on Corby Borough Council, Mr McKellar, said the site would not be viable unless the 30 mile restriction was lifted.
He said: "Corby and its surrounding villages are not Great Britain's dumping ground and we will not allow any developer to treat us as such."
He added that residents had concerns the plant would create pollution.
Mr Brathwaite said the food, cardboard, paper and wood used at the plant would be collected locally.
He said the radius increase was being asked for to satisfy lawyers and the banks "to make sure if anything happens we would be able to supply the plant over the next 25 years".
Mr Brathwaite said the plant is viable even without the increase in distance and will create 60 permanent jobs.
The gasification plant would use rubbish to produce energy.
A consultation on the new plans will remain open until 5 February.