Mason PUD #3

Washington 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 exceeds consumption and is distributed back to the PUD during the billing period, then the Customer shall be 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 April 30th any remaining credits will be exhausted with no compensation to the member.

Rebates Offered
No
Deregulated
Yes

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
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
Offset Calc Tool
Historical Usage

Metering & disconnect

Production Meter Required
No
AC Disconnect Required
Yes
AC Disconnect Labeling
Visible Lockable Labeled Disconnect
Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs

Standard

SLD Reqs

Standard

Electric Service Reqs

AC Disconnect Required

  • disconnect switch must be located outdoors adjacent to PUD meters
  • Must be a visible break type in a metal enclosure which can be secured by a PUD padlock
  • Nominal voltage and phase configuration of the facility must be compatible to the PUD system at the PCC
Placards

Common labeling furnished or approved by the PUD and in accordance with NEC requirements must be posted on meter base, disconnects, and transformers informing working personnel that generation is operating at or is located on the premises.

Electrical Stamp Required
No
Equipment Approvals
California Energy Commission
Meter Num Req SLD 3LD
No
ESID Num Req SLD 3LD
No
Website
link
Phone
(360) 426-0777

Other details

Revision Required
Yes
Mod Swap Requires Planset
Yes
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Mason PUD #3 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.