City of Colton Electric Utilities

California Utility Interconnection & net metering rules

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Tariffs and interconnection rules move often. If something here is out of date or missing, tell us and we'll fix it.

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Net Metering AllowedYes
Line Taps AllowedNo
Load Taps AllowedNo
MPU Rules<p>MPU requirement: for residential projects, maximum upgrad
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
Yes
TOU Utility
No
Post Solar Billing Method
Net Metering
Solar Export Type
N/A
Rebates Offered
No
Deregulated
No
Allows Standby
Yes

Interconnection & taps

Approval Req To Install
Yes
Line Taps Allowed
No
Load Taps Allowed
No
MPU Rules

MPU requirement: for residential projects, maximum upgrade up to 200A

Automatic Transformer Upgrade Size
0
Meter Aggregation Allowed
No

System size & offset

System Size Restrictions
10
System Size Restriction Type
AC kW
System Size Battery Included
No
System Size Includes Existing Systems
No
Offset Type
Percentage
Offset Value
100
Offset Calculation Basis
Historical
Offset Calculation Period
12
Industry Standard Watts Sqft
2
System Offset Notes


Offset Calc Tool
CSI

Metering & disconnect

Production Meter Required
Yes
Production Meter Position
Inv-Disco-PM-Disco-POI
Production Meter Labeling
Production Meter
AC Disconnect Required
Yes
AC Disconnect Labeling
Visible Lockable Labeled Disconnect
Meter Spot Required
Yes
Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs

All Projects

  • AC disconnects, production meter, and MSP wall elevation required
  • Fences and walls must be outlined
  • Example labeled “Equipment Layout Example” available in files
SLD Reqs


Electric Service Reqs
  • The solar-ready line side tapped breaker slot may not be used. This type of MSP is no longer allowed.
Install Reqs


Meter Num Req SLD 3LD
No
ESID Num Req SLD 3LD
No
Rate Schedule Link
link
Website
link
Phone
(909) 370-5104

Other details

Revision Required
Yes
Mod Swap Requires Planset
Yes
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with City of Colton Electric Utilities 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.