Avista Utilities (ID)

Idaho Utility Interconnection & net metering rules

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

Net metering & export

Net Metering Allowed
Yes
NEM Type
Annual
TOU Utility
No
Post Solar Billing Method
Net Metering
Net Excess Generation Notes

If the electricity generated by the Customer and distributed back to Avista during the billing period, or any portion thereof, exceeds the electricity supplied by Avista, then the Customer will be: (a) billed for the appropriate customer service charge as other customers of Avista in the same rate class; (b) credited for the net excess kilowatt-hours generated during the billing period, with this kilowatt-hour credit appearing on Customer’s bill for the following billing period.

On March, 31st of each calendar year, any remaining unused kilowatt-hour credit accumulated by the Customer during the previous year will be granted to Avista, without any compensation to the Customer. 

Rebates Offered
No

Interconnection & taps

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

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
No Restrictions
Offset Value
0
Offset Calculation Period
0
Industry Standard Watts Sqft
2
System Offset Notes

The Customer’s generating facility (“Generating Facility”) is intended to offset either part or all of the Customer's electrical requirements via net metering.

Offset Calc Tool
Historical Usage

Metering & disconnect

Production Meter Required
No
Production Meter Position
N/A
Production Meter Labeling
N/A
AC Disconnect Required
Yes
AC Disconnect Labeling
Visible Lockable Labeled Disconnect
Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs
  • If possible, please install the the lockable AC disco next to the utility meter (within 10 feet).
  • If not possible, please ensure that the placard map is installed in the utility meter to show the location of the AC disconnect. (Please include the proposed Placard Map in the PV Plans)
SLD Reqs
  • Lockable AC Disconnect
Install Reqs

The Generating Facility will be located on the Customer’s premises and will include all equipment necessary (including permitting) to meet applicable safety, power quality, and interconnection requirements established by the National Electrical Code (NEC, Articles 690 and 705), National Electrical Safety Code(NESC), the Institute of Electrical and Electronics Engineers(IEEE), the  American  National  Standards  Institute  (ANSI), Underwriters Laboratories(UL), and any and all of the Avista’s interconnection standards.

Equipment Approvals
California Energy Commission
Website
link
Phone
(800) 227-9187
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Avista Utilities (ID) 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.