Portland Foreside developers want to build a cogeneration plant. What is it and how would it work?

The Portland Foreside Development Co. is developing the Portland foreside property along the Portland waterfront. Photographed on Thursday, March 5, 2026. (Gregory Rec/Staff Photographer)" data-image-caption="The Portland Foreside Development Co. is developing the Portland foreside property along the Portland waterfront. Photographed on Thursday, March 5, 2026. (Gregory Rec/Staff Photographer)" data-medium-file="https://www.pressherald.com/wp-content/uploads/sites/4/2026/03/43468129_20260305_portland-foreside_5.jpg?w=300" data-large-file="https://www.pressherald.com/wp-content/uploads/sites/4/2026/03/43468129_20260305_portland-foreside_5.jpg?w=780" />The plant would be built next to the densely populated Munjoy Hill neighborhood, raising concerns about emissions, exhaust stacks and other environmental impacts.