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Public power districtClark Public Utilities interconnection application
Clark Public Utilities is a public power district serving 223,119 residential customers in Washington (EIA-861, 2025). Applications: PDF + email (Net Metering Interconnection Application & Agreement to netmetering@clarkpud.com (or mail to Energy Resources, Customer Generation, PO Box 8900, Vancouver WA 98668)). Gridpol files Clark Public Utilities 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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Process verified from Clark Public Utilities’s official sources (see below). Check 'Net metering program status' page (state cap) on first project.
Clark Public Utilities at a glance
PUD No 1 of Clark County
TypePublic power district
EIA utility ID3660
Residential customers223,119 (EIA-861, 2025)
Net-metered residential customers3,220 (EIA-861, 2025)
Service territory1 county in Washington
How to applyPDF + email – Net Metering Interconnection Application & Agreement to netmetering@clarkpud.com (or mail to Energy Resources, Customer Generation, PO Box 8900, Vancouver WA 98668) · official link
Who submitsCustomer (installer contact listed on application); customer signs application and Net Metering Agreement.
Export compensationNEM – Net metering (RCW 80.60)
Excess stored as credit for future use.
Documents Clark Public Utilities asks for
- Interconnection application formInterconnection Application (Rev 2/2021), signed Gridpol prepares this.
- Net metering / net billing agreementSigned Net Metering Agreement
- Single-line diagram (one-line)Electrical schematic drawing Gridpol prepares this.
- Site plan / site layoutWith proposed meter location(s) Gridpol prepares this.
- PV module spec sheetManufacturer cut sheets showing UL listing
- Inverter spec sheetUL 1741 cut sheet
- Battery spec sheet (when applicable)Battery only / backup: kW, kWh, type, cut sheet
- Final inspection sign-offApproved WA L&I or City of Vancouver electrical inspection
- Other utility-specific document (when applicable)Visible-break lockable disconnect if required; electrical permit number on application
How the Clark Public Utilities process runs
- Read customer generation interconnection standards; use net metering checklist
- Email signed application, NMA and documents
- Receive written design approval
- Pay fees on pre-bill (construction account number)
- Obtain L&I or City of Vancouver electrical permit; install system and meter socket(s)
- Pass electrical inspection
- Utility installs net meter and production meter; start generating
Fees
| Fee | Applies to | Note |
|---|---|---|
| $100 | Tier 1, <= 25 kW (non-refundable processing) | Paid after pre-bill |
| $500 | Tier 2, 26-100 kW | |
| $250 + tax | Production meter, single phase <= 240 V | $550 + tax for single phase >240 V or three phase |
Utility fees are paid by the installer or customer; they are not part of the Gridpol plan.
Size levels and limits
| Level | Up to | Note |
|---|---|---|
| Tier 1 | 25 kW | |
| Tier 2 | 100 kW | 26-100 kW require additional information and approval |
| Net metering cap | 100 kW |
Storage, EV and stamps
Battery storage
Application covers battery-only and battery-backup systems (UPS-only or for use with renewable generation).
Common issues the utility lists
- Meters not installed until utility is notified of approved electrical inspection
Gridpol’s pre-submission check covers these before we file.
Sources
- Clark Public Utilities Solar Net Metering: https://www.clarkpublicutilities.com/residential-customers/reduce-energy-waste-and-lower-your-bill/all-rebates-incentives/solar-energy-program/solar-net-metering/ (retrieved 2026-11-13)
- Clark Public Utilities Customer Checklist for Net Metering 100 kW or Less: https://www.clarkpublicutilities.com/wp-content/uploads/2022/12/NET-METERING-CHECKLIST-12.2022.pdf (retrieved 2026-11-13)
- Clark Public Utilities Net Metering Interconnection Application & Agreement: https://www.clarkpublicutilities.com/wp-content/uploads/2021/09/Interconnection-Application-rev-2.21.pdf (retrieved 2026-11-13)
Other utilities in Washington
- Puget Sound Energy (PSE)1,104,338
- Seattle City Light472,309
- Snohomish County PUD349,905
- Avista Utilities247,159
- Tacoma Power (Tacoma Public Utilities)177,554
- Rocky Mountain Power (UT, ID, WY) / Pacific Power (OR, WA, CA)114,998
- PUD No 1 of Benton County50,835
- PUD No 1 of Cowlitz County48,849
- PUD No 2 of Grant County43,160
- PUD No 1 of Chelan County42,571
$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
Applications are typically submitted within 2 business days after complete documents. Utility review times are set by each utility.