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Public power district

PUD No 1 of Grays Harbor County interconnection application

PUD No 1 of Grays Harbor County is a public power district serving 40,116 residential customers in Washington (EIA-861, 2025). Gridpol files PUD No 1 of Grays Harbor County interconnection applications for licensed installers – solar, storage and EV chargers – with single-line diagram and site plan, unlimited for $500 a month.

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Washington’s commission rule (WAC 480-108 (480-108-001 to -999)) does not bind public power districts; PUD No 1 of Grays Harbor County sets its own interconnection policy. We confirm its form on the first project. Consumer-owned utilities (PUDs, munis, coops) must offer net metering under RCW 80.60 (<=100 kW) and may adopt their own additional safety/power-quality/interconnection requirements by governing-body action after notice and comment (RCW 80.60.040(2)), but may not require extra standards, tests or liability insurance for compliant systems (80.60.040(3)).

PUD No 1 of Grays Harbor County at a glance

Utility

PUD No 1 of Grays Harbor County

Type

Public power district

EIA utility ID

7548

Residential customers

40,116 (EIA-861, 2025)

Net-metered residential customers

343 (EIA-861, 2025)

Service territory

5 counties in Washington

Documents PUD No 1 of Grays Harbor County asks for

  • Interconnection application formFilled in by us from your project data in the utility’s portal or on its form. Gridpol prepares this.
  • Single-line diagram (one-line)Drawn by us from your equipment data: modules, strings, inverter, battery, disconnects, point of interconnection, meter. Gridpol prepares this.
  • Site plan / site layoutDrawn by us from your roof sketch or photos: array, inverter, battery, disconnect, meter and main panel locations. Gridpol prepares this.
  • PV module spec sheetManufacturer data sheet of the modules.
  • Inverter spec sheetManufacturer data sheet (string inverter, microinverter or hybrid inverter).
  • Customer signatureThe account holder signs the application or authorization. We send the signature link.
  • Recent electric billName, service address, account and meter number must match the application.
  • Final inspection sign-offApproved electrical inspection from the authority having jurisdiction after installation.

Typical documents for US utilities – not yet verified for PUD No 1 of Grays Harbor County. We confirm PUD No 1 of Grays Harbor County’s exact list on the first project.

Washington interconnection rule

Commission

Washington Utilities and Transportation Commission (UTC)

Interconnection rule

WAC 480-108 (480-108-001 to -999) – Electric companies - Interconnection with electric generators · source

Applies to

UTC-regulated electrical companies (investor-owned: PSE, Avista, PacifiCorp) for customer generating facilities up to 20 MW; excludes PURPA QFs under WAC 480-107. Not binding on PUDs, munis, coops.

Application form

Utility-specific standard application form filed with the UTC and posted on the utility website, internet submission where practical (WAC 480-108-030(1)); must be signed and complete.

Timelines

Receipt notice 5 business days; completeness notice 10 business days; cure 15 business days (Tier 1-2) / 30 (Tier 3); Tier 1 decision 20 BD, Tier 2 30 BD; agreement with approval (Tier 1) or within 5 BD (Tier 2); operation within 1 year of approval (Tier 1-2). Completion requires certificate of completion with permits, electrical inspector approval; utility may witness test (WAC 480-108-050).

Fees

Nonrefundable application fee caps: $100 (0-25 kW), $500 (26-500 kW), $1,000 (>500 kW-20 MW) (WAC 480-108-030(5)).

Insurance

No additional insurance necessary for generating facility under 100 kW (WAC 480-108-040(14)); RCW 80.60.040(3) bars utilities from requiring net-metering customers to buy additional liability insurance.

External disconnect

Tier 1: lockable disconnect not required for certified inverter systems on self-contained meter <=320 A unless L&I requires it (WAC 480-108-020(2)(a)(iv)). Tier 2: visible lockable AC disconnect required but utility may waive for inverter-based systems.

Export compensation

NEM – RCW 80.60
Applies to all electric utilities incl. PUDs, munis, coops. Offer required until earlier of 2029-06-30 or 4% of utility's 1996 peak; utilities may then file successor tariff (UTC approval for IOUs).

Not bound by the rule

Consumer-owned utilities (PUDs, munis, coops) must offer net metering under RCW 80.60 (<=100 kW) and may adopt their own additional safety/power-quality/interconnection requirements by governing-body action after notice and comment (RCW 80.60.040(2)), but may not require extra standards, tests or liability insurance for compliant systems (80.60.040(3)).

Other utilities in Washington

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Gridpol Unlimited

$500 / month

Unlimited interconnection applications. 12-month agreement, signed online. The agreement starts the day you sign; first invoice right away, then monthly.

  • Unlimited interconnection applications
  • Single-line diagram and site plan for every application
  • Pre-submission check against the utility’s requirements
  • Homeowner e-signature link for the authorization
  • Filing in your utility portal accounts or by the utility’s method
  • Utility questions, corrections and resubmissions
  • Follow-up through approval, inspection and PTO
  • Customer list, exports, API and webhooks
Get started

Applications are typically submitted within 2 business days after complete documents. Utility review times are set by each utility.

Get started – $500/month unlimited