Green Mountain Power supplements its Order 864 compliance filing to bring its currently effective local transmission formula rate under Schedule 21-GMP Attachment D-1 into compliance with the requirements of Order 864 for the Jan 1, 2020 through Dec 31, 2021 period (the Interim Period) until the rate is superseded and replaced by the settled formula rate approved in ER20-2054, which becomes effective on Jan 1, 2022.  In addition, GMP also revised its permanent ADIT worksheet.