Ohop Mutual Light Company

Washington 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 If something here is out of date or missing, tell us and we'll fix it.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
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

In the event the energy generated by the facility exceeds the energy consumed on the member’s premises, the excess may be distributed to Ohop Mutual’s grid through Ohop Mutual’s meter, causing the member’s meter to run backward. In no case will a credit be issued for negative usage. Instead, a bill for zero usage will be issued and negative Kwh will be “banked” for usage by the member in a subsequent month. Any banked Kwh remaining on April 30th of each calendar year shall be donated to Ohop Mutual Light Company.

Rebates Offered
No
Deregulated
No
Allows Standby
No

Interconnection & taps

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

System size & offset

System Size Restrictions
25
System Size Restriction Type
AC kW
System Size Battery Included
No
System Size Includes Existing Systems
No
Offset Type
Combination
Offset Value
100
Offset Calculation Basis
Historical
Offset Calculation Period
12
Industry Standard Watts Sqft
2
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
Utility Disconnect Switch

Plans & docs

Site Plan Reqs

Standard

Submit/Attach a site map of system on property and directions to the site.

SLD Reqs

Standard

one-line electrical diagram for proposed electrical system, including metering points in relation to Ohop’s electrical system and member’s generating system location

Electric Service Reqs
  • UL 1741, Standard for Static Inverters and Charge Controllers for Use in Photovoltaic Systems
  • UL 1703, Standard for Safety: Flat-Plate Photovoltaic Modules and Panels
  • IEEE 12621995, Recommended Practice for Qualification of Photovoltaic (PV) Modules
  • IEEE Standard 929-2000, Recommended Practice for Utility Interface of Photovoltaic Systems
Install Reqs

AC Disconnect Switch

  • An accessible, visible, lockable disconnect switch is to be provided by the Member in an appropriate circuit which is lockable in the open position only. Typically such a device will be an air switch or fused cutouts located near the point of interconnection.
Electrical Stamp Required
No
Equipment Approvals
California Energy Commission
Meter Num Req SLD 3LD
No
ESID Num Req SLD 3LD
No
Website
link
Phone
(253) 847-4363

Other details

Revision Required
Yes
Mod Swap Requires Planset
Yes
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Ohop Mutual Light Company 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.