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Investor-owned utilityHawaiian Electric (Oahu) interconnection application
Hawaiian Electric (Oahu) is an investor-owned utility serving 276,853 residential customers in Hawaii (EIA-861, 2025). Applications: Own online portal (Customer Interconnection Tool (CIT, GridUnity)). Gridpol files Hawaiian Electric (Oahu) 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 Hawaiian Electric (Oahu)’s official sources (see below). Fees and official review timelines not found; export credit values in program flyers/tariff Rule 14H not retrieved.
Hawaiian Electric (Oahu) at a glance
Hawaiian Electric Co Inc (Hawaiian Electric Industries)
TypeInvestor-owned utility
EIA utility ID19547
Residential customers276,853 (EIA-861, 2025)
Net-metered residential customers68,048 (EIA-861, 2025)
Service territory1 county in Hawaii
How to applyOwn online portal – Customer Interconnection Tool (CIT, GridUnity) · official link
Who submitsContractor (registered CIT account) applies online; customer signs Customer Authorization & Acknowledgement form; agreement e-signed by property owner and system owner via DocuSign.
Export compensationNet billing – Smart Renewable Energy (SRE) Export / Non-Export; NEM Plus for existing NEM customers
Export rates locked 7 years for new interconnection; advanced meter required. CGS Plus/Smart Export/CSS closed 29 Mar 2024.
Documents Hawaiian Electric (Oahu) asks for
- Interconnection application formCIT application with project system components (each battery inverter + storage listed) Gridpol prepares this.
- Letter of authorization / designated agent formCustomer Authorization & Acknowledgement form (latest version, all pages)
- Single-line diagram (one-line)Must show AC disconnect(s) covering entire facility incl. storage; service address, customer name/contact, revenue meter no., contractor info Gridpol prepares this.
- Site plan / site layoutSame identifying info as SLD Gridpol prepares this.
- Other utility-specific document (when applicable)Program application form (SRE Export/Non-Export ± BYOD Plus); DER Amendment form for equipment changes; property deed/trust documents/BREG authority if ownership records out of date
- Load calculation (when applicable)Max/min site loads without generation for systems ≥30 kW
- Photos (meter, main panel, equipment)Validation packet photos after installation
- Interconnection agreementGenerated by CIT, DocuSign after inspection
How the Hawaiian Electric (Oahu) process runs
- Contractor creates and submits application in CIT
- Completeness review and technical/utility reviews -> conditional approval
- Install; submit revision if anything differs from application
- Submit Project Validation packet (post-installation info, photos)
- Validation review; utility inspection
- Agreement execution via DocuSign
- Meter change; PTO email from CIT
Size levels and limits
| Level | Up to | Note |
|---|---|---|
| ≥30 kW | Additional site load data required |
SRE Export and Non-Export: no project size limit per program page.
Storage, EV and stamps
Battery storage
Battery projects: list each battery inverter with its storage; AC disconnect on energy storage required (Rule 14H). BYOD Plus pays for scheduled battery dispatch (apply as BYOD Level 1 in CIT until updated).
Common issues the utility lists
- Components (make/model/qty) inconsistent with SLD
- Obsolete Customer Authorization form version / mixed pages
- SLD missing AC disconnect covering storage
- Wrong TMK format (Oahu: 1 + 12-digit TMK)
- SLD/site plan missing address, customer, meter no., contractor info
- Ownership records (trust/company/out-of-date) without supporting documents
- Design not matching selected program type
- Unaddressed flagged comments at Completeness Review
Gridpol’s pre-submission check covers these before we file.
Sources
- Hawaiian Electric - Especially for Contractors: https://www.hawaiianelectric.com/products-and-services/smart-renewable-energy-programs/especially-for-contractors (retrieved 2026-11-13)
- Hawaiian Electric Smart Renewable Energy programs: https://www.hawaiianelectric.com/products-and-services/smart-renewable-energy-programs (retrieved 2026-11-13)
- Customer Interconnection Tool Guide for Contractors: https://www.hawaiianelectric.com/documents/products_and_services/customer_renewable_programs/cit_how_to_guide.pdf (retrieved 2026-11-13)
- Common Solar Installer Errors that Delay the Interconnection Process (12/2021): https://www.hawaiianelectric.com/documents/products_and_services/customer_renewable_programs/common_solar_installer_errors.pdf (retrieved 2026-11-13)
- Common Discrepancy List (10/2022): https://www.hawaiianelectric.com/documents/products_and_services/customer_renewable_programs/common_discrepancy_list.pdf (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.