Energy Storage

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Guide for Applying for Energy Storage Installation

  1. Contractor submits the Energy Storage (ES) Application via PowerClerk and uploads the following supporting documents:
    • Site Plan depicting the physical relationship of the significant electrical components of the ES system such as inverters, batteries, transfer switches, control panels, customer loads, and the interconnections with GWP's Distribution System, if applicable.  The Site Plan must depict the approximate location of all major electric components.
    • One Line Diagram depicting the electrical relationship and descriptions of the significant electrical components such as the metering equipment, panel boards, inverter(s), AC Disconnect(s), batteries, circuit breakers, and ES equipment with operating voltages, capacities, and protective functions for the ES system. For GWP’s requirements, see “Distributed Energy Resource Specifications” (DERS). For additional information, please contact GWP Engineering at 818-548-3921.
    • Photograph of the location where the ES meter and AC disconnect will be installed. Photograph should include the wall, entire surrounding area, and all applicable clearances; including the 3' x 3' working space in front of the meter and disconnect.
    • Data Sheets for ES devices, inverter, and switch/relay, if applicable.
  2. Solar Solutions staff forwards the application packet to GWP Engineering
  3. Contractor contacts GWP at 818-548-3921 to request a Utility Service Spot (a.k.a. Spot), if ANY of the following conditions is true: [A Spot is a drawing of the utility approved location of the ES meter and AC disconnect].
    • You cannot install the ES meter and AC disconnect per the GWP Standard, DERS.
    • The property has more than one service meter.
    • The property is commercial or multi-residential.
    • Project is upgrading/replacing the main service panel.
    • ES system design is NOT consistent with the GWP approved diagrams located here.

    If NONE of the above conditions is true, you may proceed without a Spot drawing by incorporating the DERS into your two sets of Electrical Plans (a.k.a. Plans) for permitting.  The DERS must be printed onto a page with your company Title Block (same as all other plans submitted for permitting).  Please note that you are responsible for ensuring all conditions on the DERS can be met without a Utility Service Spot drawing from GWP

  4. If applicable, GWP Engineering staff visits property and creates a Spot drawing. (1-3 weeks)
  5. GWP Engineering emails the DERS or the Spot drawing to the contractor with instructions for coming to the City to pull permits.
  6. GWP Engineering forwards the approved application packet to Solar Solutions staff.
  7. Solar Solutions staff changes the project status on PowerClerk and emails the customer and contractor indicating the application has been approved.
  8. Contractor incorporates the DERS or the Spot drawing and photograph into the Plans for permitting and ensures the Plans are consistent with GWP’s DERS or Spot drawing.
  9. Contractor takes two sets of Plans to GWP Engineering.
  10. GWP Engineering approves the Plans and provides an Electrical Permit application over the counter.
  11. Contractor submits the Electrical Permit application and the approved Plans to the Building & Safety Department (B&S). For information regarding the permit process and requirements, please call B&S at 818-548-3200.
  12. Plans are submitted for the City plan check process and approved.
  13. An Electrical Permit is issued by B&S.
  14. Contractor installs ES system.
  15. Contractor contacts B&S for an inspection by calling 818-548-4830.
  16. Contractor contacts GWP Engineering for an inspection by calling 818-548-3920.
  17. B&S notifies GWP Engineering when the ES system passes inspection.
  18. GWP Engineering submits a work order to GWP Field Services for the installation of the ES meter. (7-10 working days)
  19. Once the meter is in place, Solar Solutions staff changes the project status in PowerClerk and e-mails the customer and contractor, indicating the meter has been installed and the system may be turned on by the contractor or property owner.