To discuss trade secrets or confidential, competitively-sensitive or other proprietary information provided:
in the course of activities conducted by a governmental body as an energy supplier under a license granted by the department of public utilities pursuant to section 1F of chapter 164;
in the course of activities conducted as a municipal aggregator under section 134 of said chapter 164; or
in the course of activities conducted by a cooperative consisting of governmental entities organized pursuant to section 136 of said chapter 164;
when such governmental body, municipal aggregator or cooperative determines that such disclosure will adversely affect its ability to conduct business in relation to other entities making, selling or distributing electric power and energy.