FERC has reaffirmed that MISO can exclude renewable resources from providing ancillary services in its markets.

Clean energy groups in MISO have told FERC it should rethink its support of a ban on renewable energy in MISO’s ancillary service market because the commission didn’t consider hybrid resources.

MISO has FERC’s go-ahead to bar its renewable energy resources from supplying ramping reserves.

In a June 5 response to FERC, MISO defended its plan to bar renewable energy from supplying ramping reserves.

FERC last week told MISO it must provide more details around its plan to exclude wind and solar generation from supplying ramping service.