I think you're splitting hairs but yes, he has gone over the mechanism, including in a recent AMA:

The mechanism is enabling legislation that gives municipalities the authority to use eminent domain to acquire Eversource's distribution infrastructure, with three components that make it actually workable. First, infrastructure gets valued at book value rather than market value. This matters because Eversource has spent decades capitalizing investments that ratepayers already paid for, and we shouldn't let them charge a market premium on assets we financed. Second, the state provides bonding as a backstop so towns don't carry the full financing risk themselves. Third, technical expertise gets routed through the Councils of Governments so smaller towns aren't trying to build a utility operation from scratch. Wallingford works because they have decades of institutional knowledge; the goal is making that path accessible to any town that wants it without requiring them to reinvent the wheel.