CA - GWP - City of Glendale Water and Power

California Utility Interconnection & net metering rules

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Net Metering AllowedYes
Line Taps AllowedNo
Load Taps AllowedNo
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
Yes
TOU Utility
No
Post Solar Billing Method
Net Metering
Rebates Offered
No
Deregulated
No
Allows Standby
Yes

Interconnection & taps

Approval Req To Install
Yes
Line Taps Allowed
No
Load Taps Allowed
No
Automatic Transformer Upgrade Size
0
Meter Aggregation Allowed
Yes

System size & offset

System Size Restrictions
10
System Size Restriction Type
CEC kW
System Size Battery Included
No
System Size Includes Existing Systems
No
Offset Type
Combination
Offset Value
110
Offset Calculation Basis
Historical
Offset Calculation Period
12
Industry Standard Watts Sqft
2
Utility Specific Adjustments
  • GWP uses 110% of the customer's kWh usage of the past 12 months to establish the customer's anticipated annual load
  • PV systems ≤ 10 kW CEC-AC are exempt from the 110% historical usage cap.
  • Systems may include up to 30 kWh of battery storage.
System Offset Notes


Offset Calc Tool
CSI

Metering & disconnect

Production Meter Required
Situational
Production Meter Criteria
  • PRODUCTION METER REQUIRED for systems over 15 kW
  • Inverter-> bottom of Disconnect, top of disconnect -> top of PV Meter, bottom of PV Meter-> POI Include Utility Meter number
Production Meter Position
Inv-Disco-PM-POI
Production Meter Labeling
Production Meter
AC Disconnect Required
Yes
AC Disconnect Labeling
Utility AC Disconnect
Meter Spot Required
No
Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs
  • Site Diagram showing the physical relationship of the significant electrical components of the Generating Facility (+ Energy Storage optional) such as modules, inverters, transformers, and control panels, the Customer's loads and the interconnections with GWP's Distribution System Diagram that must show the approximate location of all major electric components.
  • Print the document labeled "GWP DERS" in the file section, with company title block and incorporate the page into PV plans.
  • Include photos of MSP/equipment area and surrounding location so clearances can be seen within the planset
SLD Reqs

Meter Orientation = Over/Under

  • One Line Diagram showing the electrical relationship and descriptions of the significant electrical components such as the metering equipment, panel boards, solar panels, inverter(s), AC Disconnect(s), solar meter, circuit breakers, and Energy Storage equipment (if applicable), with operating voltages, capacities, and protective functions of the Generating Facility. For GWP’s photovoltaic requirements, see MTR-DWG-009. For additional information, please contact them at.
  • Existing Systems: New and existing solar must be combined into a single AC disconnect
Install Reqs


Electrical Stamp Required
No
Equipment Approvals
California Energy Commission
Meter Num Req SLD 3LD
Yes
ESID Num Req SLD 3LD
No
Website
link
Phone
(855) 550-4497

Other details

Revision Required
Yes
Mod Swap Requires Planset
Yes
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with CA - GWP - City of Glendale Water and Power before you rely on this. The useful move: if an installer says you need a main panel upgrade, ask how these tap and interconnection policies were considered first.