Brazil · Energy

Key Facts

—The move: Brazil’s grid operator, the ONS, triggered its emergency excess-generation plan for the first time, effective Sunday, June 7.

—The reason: High rooftop-solar output met very low demand on a mild long-weekend Sunday, risking too much power on the system.

—The target: The plan cuts mainly small distributed solar and microgeneration that the ONS does not dispatch directly, via the distribution utilities.