NEPGA filed an Answer to an answer ISO-NE filed in the proceeding concerning ISO-NE’s request for waivers from its Tariff to make Mystic Units 8 and 9 eligible for a cost of service agreement for FCAs 13 and 14 (No. ER18-1509-000).  NEPGA responded to ISO-NE’s belief that the Tariff will be amended – specifically sections of the Tariff dictating the pricing treatment of resources retained for local transmission reliability – by virtue of waivers of other sections of the Tariff from which ISO-NE is seeking waivers.  NEPGA also responded to ISO-NE’s argument that the “fuel security” need it asserts outweighs price-suppression caused by its plan to re-price the Mystic Units as price-takers.