RENEW Northeast, Inc. (RENEW) and the American Clean Power Association (ACPA) file a FPA section 206 Complaint against ISO-NE seeking a FERC order directing ISO-NE to make changes to its rules for capacity accreditation (effective no later than FCA18) and operating reserve designations (promptly).  RENEW/ACPA assert the changes are need to address undue preferences granted to gas-fired generation resources that have neither dual-fuel capability nor dedicated, firm natural gas supply arrangements.