A controversial 4,000-unit solar-panel field on Braley Road has received a green light from local officials. Following a joint meeting with the Conservation Commission, the Planning Board last week granted site plan approval to Borrego Solar for the project. Neighbors opposed to the solar-panel field believe the area – zoned for light industrial use – does not support such a use. Their lawyer, Michael O’Neill, argued at the meeting against the proposal, maintaining that its size and scope should be scaled back. “We’re disappointed in the decision,” O’Neill said. “We thought we made a good argument for less density.” The neighbors have not decided whether to appeal the Planning Board’s approval, he said.