Veolia has submitted fresh plans to Nottinghamshire County Council after ministers rejected proposals for an incinerator last year.
Details of the proposals will not be made public until the summer, to the frustration of local campaigners, although the company said elected members were being fully briefed.
Veolia is six years into a 26-year PFI contract to manage household waste in Nottinghamshire, and aims to boost household recycling and composting in the county to 52% by 2021.
But communities secretary Eric Pickles last summer followed the recommendations of planning inspector Rupert Grantham that the firm’s proposed 180,000-tonne energy-from-waste facility in Rainworth be rejected.
Veolia regional director Steve Mitchell said of the replacement plans this week: “It’s very important that at this stage we operate under confidentiality.
“We are negotiating with Nottinghamshire County Council and other parties and these negotiations could potentially be compromised if details were made public at this time.”
Nottingham’s group manager for waste and energy management Mick Allen said: “At this stage, it has been supplied on a confidential basis as it contains commercially confidential and sensitive information.
“The documentation requires careful technical and legal consideration – which will take some time – before it goes before the full council in July.”
Meanwhile, a 28-day consultation on Cory Wheelabrator’s proposals for an incinerator in Norfolk closed this week.
The consortium formally signed a deal with Norfolk County Council to build and run the controversial King’s Lynn incinerator this month.