Campaigners say they are disappointed a judge has rejected their request for a judicial review into a proposed waste incinerator.
Fresh Air Desborough (FAD) has fought against county council-approved plans to install the plant at Magnetic Park in the town.
This week, a judge halted their legal battle – and the group must now decide whether to fork out thousands more to fund an oral hearing.
“It’s just been a difficult few days,” said vice-chairman Alan Brooks. “But we won’t give up.”
He said the group would decide in the coming days whether to go for an oral hearing.
FAD’s treasurer Tim Kay added: “At this point in time we are waiting for our legal team to tell us how much that would cost. Legal matters are expensive. We have only got a week to decide and raise the money.
“The campaign will have to go on. They (the developers, Origin Renewable Energy) will have to go to the Environment Agency to get an operating permit.”
FAD has vowed to oppose the application for an Environment Agency permit.
The group is continuing to organise fundraisers, and they are hosting a band night at the Desborough Services Club on Saturday, September 28 from 5pm.