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Mason PUD #3

Washington Utility Interconnection & net metering rules
Net Metering Allowed1
NEM TypeAnnual
Line Taps Allowed0
Load Taps Allowed0
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
1
NEM Type
Annual
TOU Utility
0
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
0
Deregulated
1

Interconnection & taps

Approval Req To Install
Yes
Interconnection Level
3
Line Taps Allowed
0
Load Taps Allowed
0
Automatic Transformer Upgrade Size
0

System size & offset

System Size Restrictions
0
System Size Restriction Type
No Restrictions
System Size Battery Included
0
System Size Includes Existing Systems
0
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
0
Equipment Approvals
California Energy Commission
Meter Num Req SLD 3LD
0
ESID Num Req SLD 3LD
0
Website
link
Phone
(360) 426-0777

Other details

Restrict Inspection
0
Revision Required
1
Mod Swap Requires Planset
1
Address ID
4395291
Express Planset Eligible
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.