State rules define the interconnection review procedure and provide details such as allowable fees and assignment of construction costs. The state-specific interconnection rules and standards are. Electric Rule 21 (Rule 21) is a tariff that describes the interconnection, operating and metering requirements for generation facilities to be connected to an investor-owned utility's (IOUs) distribution system and transmission system over which the California Public Utilities Commission. formulating plans that maximize functionality and operation in a safe, reliable, cost effective, and environmentally responsible manner. Internal input is obtained from APS departments such as System Protection, SCADA, Operations, Meter Shop, Legal, Regulatory, Program, Technical Projects, Safety, and Interconnection. External. Vision or Hearing Impaired? You have reached the end of the nav drawer. Copyright @ 2026 National Grid USA Service Company, Inc. EST Friday, February 27 to 9 p.
[PDF Version]