LEBANON — After a year of operation, the landfill’s methane gas-to-electricity system at the solid waste facility may not be as economical as city officials had hoped.

“The very detailed financial projections were very wrong,” Councilor Tim McNamara said at a Sept. 3 meeting.

“I have to ask, when do we call it?” said Councilor Lori Keys.

Chris Kilmer, assistant public works director, addressed …