Hundreds of people have objected to plans for a massive power station which burns grass and rubbish in north Devon.
The proposed £43m site, at Winkleigh, would be the largest "biomass" generating plant in Europe.
Grasses will be harvested and mixed with old bin bags recovered during the recycling process, to produce enough power for 23,000 homes.
More than 800 people have objected to Torridge District Council, which will make a decision in the next few weeks.
Objector David Lawson, of Dust (Devon Under Serious Threat), said: "It's an experiment and we have no information on the emissions.
"It will have a huge impact, just because of its sheer size and noise."
Biomass firm Peninsula Power says it is confident it can get planning permission for the plant.
Spokesman Tony Fitzsimons, said: "A lot of the issues which have been raised have nothing to do with the requirements for planning consent.
"We are very confident that the technology will work and we are also very confident that it is commercially viable because the price of electricity has risen quite considerably."