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CA - GWP - City of Glendale Water and Power

California Utility Interconnection & net metering rules
Net Metering Allowed1
Line Taps Allowed0
Load Taps Allowed0
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
1
TOU Utility
0
Post Solar Billing Method
Net Metering
Rebates Offered
0
Deregulated
0
Allows Standby
1

Interconnection & taps

Approval Req To Install
Yes
Interconnection Level
3
Line Taps Allowed
0
Load Taps Allowed
0
Automatic Transformer Upgrade Size
0
Meter Aggregation Allowed
1

System size & offset

System Size Restrictions
10
System Size Restriction Type
CEC kW
System Size Battery Included
0
System Size Includes Existing Systems
0
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
0
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

Relay 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
0
Equipment Approvals
California Energy Commission
Meter Num Req SLD 3LD
1
ESID Num Req SLD 3LD
0
Website
link
Phone
(855) 550-4497

Other details

Restrict Inspection
0
Revision Required
1
Mod Swap Requires Planset
1
Address ID
112496
Express Planset Eligible
No
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.