City of Ukiah
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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 If something here is out of date or missing, tell us and we'll fix it.
Report a correctionNet metering & export
- Rebates Offered
- No
Interconnection & taps
- Approval Req To Install
- Yes
- Supply Side Taps Allowed
- Yes
- Line Taps Allowed
- Yes
- Load Taps Allowed
- Yes
- Automatic Transformer Upgrade Size
- 0
System size & offset
- System Size Restrictions
- 0
- System Size Restriction Type
- No Restrictions
- 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
- Utility Specific Adjustments
To ensure grid safety and reliability, sizing of the generation (in kW) will be limited to two times customer load up to 10 kW AC maximum.
Generation over 10 kW shall be subject to special review to ensure grid safety. Cost of studies and upgrades associated with generation over 10 kW will be established during the permitting process and paid prior to connection.
- System Offset Notes
To ensure grid safety and reliability, sizing of the generation (in kW) will be limited to two times customer load up to 10 kW AC maximum.
Generation over 10 kW shall be subject to special review to ensure grid safety. Cost of studies and upgrades associated with generation over 10 kW will be established during the permitting process and paid prior to connection.
- Offset Calc Tool
- CSI
Metering & disconnect
- Production Meter Required
- No
- Allowed Meter Adapter
- None
Plans & docs
- SLD Reqs
**City of Ukiah Utility jobs:**
* A lockable FUSED disconnect device shall be installed between the alternate engery source and the Service Entrance Panel. Fuse Rating to match conductor ampacity. The fused disconnect must be within 10' of the Service Entrance Panel and must be accessible to the City at all times (include note on Site plan similar to APS utility)
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* System size cannot exceed annual usage - for system sizes greater than 5KW, must show justification (for construction review - similar to NVE requirement)
* PV Modules must be included on the approved list www.gosolarcalifornia.org/equipment/pv_modules.php (http://www.gosolarcalifornia.org/equipment/inverters.php)
* Inverters must be included on the approved list www.gosolarcalifornia.org/equipment/inverters.php (http://www.gosolarcalifornia.org/equipment/inverters.php)
* PVWatts must be submitted for projects that exceed "minimal shading" (not defined by city)
* City/utility must have 24 hours unrestricted access to the solar equipment (similar to APS)
LINE SIDE TAPS ARE THE ONLY WAY WE CAN CONNECT OUR SOLAR TO THE GRID AHJ WILL KICK BACK PROJECT IF WE USE PV BREAKER.
- Electric Service Reqs
1. CSI Annual kWh to not exceed customer's annual usage.
2. For new construction or if electric consumption history does not reflect expected expanded consumption, includes an electrical load estimate for PV system larger than 5kW ac. Suggested methods of substantiating a load estimate include an electric load calculation with corresponding equipment schedules. building simulation program reports, or detailed engineering calculations.
- Install Reqs
All projects over 10kW require a feeder study, which must be completed before install approval has been issued.
- Equipment Approvals
- California Energy Commission
- Electrical Diagram Notes
City of Ukiah - Production Meter not required for residential solar installations only commercial.
- Rate Schedule Link
- link
- Website
- link
- Phone
- 707-463-6203