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Electric cooperativeKauai Island Utility Cooperative interconnection application
Kauai Island Utility Cooperative is an electric cooperative serving 30,335 residential customers in Hawaii (EIA-861, 2025). Gridpol files Kauai Island Utility Cooperative 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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Hawaii’s commission rule (PUC-approved utility tariff Rule 14H (Hawaiian Electric Rule No. 14, Section H, with Appendix I technical requirements, Appendix II applications/agreements, Appendix III process overview); Dockets 2014-0192 and 2019-0323) does not bind electric cooperatives; Kauai Island Utility Cooperative sets its own interconnection policy. We confirm its form on the first project. No municipal utilities. KIUC (cooperative, PUC-regulated) follows its own PUC-approved interconnection tariff and DER programs.
Kauai Island Utility Cooperative at a glance
Kauai Island Utility Cooperative
TypeElectric cooperative
EIA utility ID10071
Residential customers30,335 (EIA-861, 2025)
Net-metered residential customers6,221 (EIA-861, 2025)
Service territory1 county in Hawaii
Documents Kauai Island Utility Cooperative 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 Kauai Island Utility Cooperative. We confirm Kauai Island Utility Cooperative’s exact list on the first project.
Hawaii interconnection rule
Hawaii Public Utilities Commission (HI PUC)
Interconnection rulePUC-approved utility tariff Rule 14H (Hawaiian Electric Rule No. 14, Section H, with Appendix I technical requirements, Appendix II applications/agreements, Appendix III process overview); Dockets 2014-0192 and 2019-0323 – Interconnection of Distributed Generating Facilities Operating in Parallel with the Company's Electric System · source
Applies toHawaiian Electric (Oahu, Hawaii Island, Maui County) via its PUC-approved tariff Rule 14H. No statewide administrative-code interconnection rule; Kauai Island Utility Cooperative (KIUC, PUC-regulated) has its own tariff rules (not reviewed).
Application formUtility-specific Interconnection Application: Exhibit A to Appendix II, Appendix II-A or II-B (non-export, momentary parallel) or other Company-approved application, with standard interconnection agreement.
TimelinesUtility provides requirements and agreement within 5 business days of request; completeness review within 15 business days; Initial Technical Review within 15 business days of complete application; Supplemental Review 20 business days; IRS 150 calendar days; interconnection facilities identification 15 business days; executable agreement within 5 business days; fully executed agreement within 15 business days after customer-executed agreement and closed City/County permits (Rule 14H Appendix III).
InsurancePer PUC D&O No. 22248 (Docket 03-0371) the utility does not impose a standardized insurance requirement; customer must carry commercially reasonable insurance or self-insure and disclose/provide evidence before executing the standard agreement (Appendix III Sec. 5). Program System Size is used to determine insurance requirements in agreements.
External disconnectCustomer furnishes a manual, visible-break isolation device (disconnect switch or rack-out breaker), accessible to and lockable open by utility personnel; existing service disconnect may be used if compliant; label 'Customer Generating Facility'. Interrupting device must be utility-accessible for facilities > 10 kW (Rule 14H App. I).
Export compensationUtility-specific – HRS §§ 269-101 to 269-111 (net energy metering); PUC D&O No. 33258 (Oct. 12, 2015, Docket 2014-0192)
D&O 33258 closed retail NEM for Hawaiian Electric to new customers and created Customer Grid-Supply (fixed export credit) and Customer Self-Supply (non-export); later CGS+ / Smart Export (2018), and current Hawaiian Electric programs referenced in Rule 14H: Rule 22 Customer Self-Supply, Rule 27 NEM+, Rule 32 Smart Renewable Energy Program (Smart DER). Existing NEM customers grandfathered.
No municipal utilities. KIUC (cooperative, PUC-regulated) follows its own PUC-approved interconnection tariff and DER programs.
- Hawaiian Electric Rule No. 14 incl. Rule 14H and Appendices I-III: https://www.hawaiianelectric.com/documents/billing_and_payment/rates/hawaiian_electric_rules/14.pdf (retrieved 2026-11-13)
- HI PUC DER Phase 1 D&O summary (not fully reviewed): https://puc.hawaii.gov/wp-content/uploads/2015/10/DER-Phase-1-DO-Summary.pdf (retrieved 2026-11-13)
- HRS Chapter 269 (net energy metering part): https://data.capitol.hawaii.gov/hrscurrent/Vol05_Ch0261-0319/HRS0269/HRS_0269-.htm (retrieved 2026-11-13)
$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.