Setting a performance obligation for a wind farm is like prohibiting wildfires, a legal "solution" for a technical/physical problem. I feel like missing the problem here.
Maybe law makers want to obstruct a company or out of ideologically aka. political reasons push back against renewables.
Or this wind park maybe a trick from Dominion, to cash in subsidy and practically abbadon the plant after. Like other mega projects with public partnerships in the past became.
Unfortunately, the article does not illuminate the law makers reasoning.