2011/09/14 Council Agenda Packet

9 c) Power Quality. Installations will be in compliance with all applicable standards including IEEE Standard 519-1992 Harmonic Limits. B. Inverter-Based Interconnection Requirements, as Applicable • IEEE Std 1547-2003 Standard for Interconnecting Distributed Resources with Electric Power Systems • UL Standard 1741, Inverters,Converters, and Controllers for Use in Independent Power Systems -Equipment must be UL listed. • IEEE Standard 929-2000, IEEE Recommended Practice for Utility Interface of Photovoltaic (PV) Systems C. Non-Inverter-Based Interconnection Requirements The Application for such Interconnection may require more detailed PUD review,testing, and approval, at Cus- tomer cost, of the equipment proposed to be installed to ensure compliance with applicable standards including: • IEEE Std 1547-2003 Standard for Interconnecting Distributed Resources with Electric Power Systems • ANSI Standard C37.90, IEEE Standard for Relays and Relay Systems Associated with Electric Power Apparatus • Customers proposing such interconnection may also be required to submit a power factor mitiga- tion plan for PUD review and approval. D. Specific Interconnection Requirements 1. Visible/Lockable Disconnect. Customer shall furnish and install on Customer's side of the meter a UL approved safety disconnect switch which shall be capable of fully disconnecting the Customer's energy generating equipment from PUD electric service. The disconnect switch shall be located ad- jacent to PUD meters and shall be of the visible break type in a metal enclosure which can be se- cured by a padlock. The disconnect switch shall be accessible to PUD personnel at all times. This requirement may be waived by the PUD if: (1) Customer provides interconnection equipment that Customer can demonstrate, to the satisfaction of PUD, performs physical disconnection of the generating equipment supply internally; and, (2) Customer agrees that its service may be discon- nected entirely if generating equipment must be physically disconnected for any reason. The PUD shall have the right to disconnect the Facility from PUD's supply at the disconnect switch when necessary to maintain safe electrical operating conditions or, if the Facility does not meet re- quired standards or, if the Facility at any time adversely affects PUD's operation of its electrical sys- tem or the quality of PUD's service to other customers. 2. Voltage and Phasing. Nominal voltage and phase configuration of Customer generation must be compatible to the PUD system at the Point of Common Coupling(PCC). 3. Interconnection to secondary Network Distribution Systems (distribution systems with multiple sources of secondary supply). Customer must provide evidence that their generation will never result in reverse current flow through the PUD's Network Protectors. All instances of interconnection to secondary Distribution Networks shall require review and written pre-approval by designated PUD engineering staff. Interconnection to distribution secondary area networks is not allowed. Closed Snohomish County PUD Net Metering Agreement Rev.4/2011 12 Reviewed: ALS 6-27-11 7 2