Microgrid and Renewable Wheeling Implementation

PMF recommends classifying every project before marketing or finance: behind-the-meter backup; aggregated tariff service; a safely islandable campus or facility; or a project seeking to transfer renewable electricity across utility wires. These functions have different protection, billing, restoration, and legal questions. A microgrid label grants no access to wires, interconnection, wheeling, or retail-service authority.

HRS §269-46.3 creates a public-utility-status exception for a person serving participating consumers through a new microgrid. Section 269-46.4 directs the PUC to implement renewable-wheeling and microgrid-service tariffs by January 1, 2027. Its 100 kW–2 MW AC eligibility bounds apply to wheeling projects. Both sections exclude member-owned cooperative electric utilities. These provisions do not settle every site’s access, interconnection, or protection requirements.

Sources: HRS §269-46.3 — Microgrid public-utility exception (Hawaiʻi Legislature) · HRS §269-46.4 — Renewable wheeling rules (Hawaiʻi Legislature)

Eligibility should begin with a bounded host: campus, affordable-housing site, critical facility, commercial cluster, or community-serving project with known participants and load. The application should identify ownership, consent, critical circuits, assets, dispatch, outage plan, protection boundary, black-start source, communications, fuel if any, maintenance, comparative bill, and services that remain the host utility’s responsibility.

A project crossing property boundaries or using utility infrastructure should document access rights and identify every applicable interconnection, tariff, and operating approval before promising service. Requirements depend on the actual configuration; not every isolated microgrid uses utility wires. Standardized applications cannot bypass safety review. The sponsor bears design, study, and construction risk unless an adopted program expressly shares it.

Each participant should receive a comparison of current and proposed service, rates, outage expectations, backup limits, data handling, operator contact, maintenance, insurance, complaints, and exit terms. Tenants need protection from coerced enrollment, rent pass-through, or loss of ordinary utility rights. Nonparticipants should not bear undisclosed costs or unwanted common-area equipment.

The operating contract should distinguish resilience from guaranteed continuous service. It should identify reserve, load-shedding, overrides, restoration, data retention, cybersecurity, and platform-failure treatment. An operator controlling billing, dispatch, or data should face independent dispute and audit review.

Require a measurement plan before funding or tariff enrollment: renewable output, storage charge/discharge, customer load, grid imports and exports, islanding, outage duration, restoration, availability, and participant bills. Aggregated public reporting can demonstrate resilience and nonparticipant protection without publishing household load or security-sensitive facility details.

Payments follow verified service and transparent cost allocation. Do not pay both a resilience grant and grid-service payment for the same unmeasured output, or charge for unavailable outage service. Require independent commissioning plus periodic protection, cybersecurity, and restoration testing before treating resilience as dependable.

PMF recommends an initial cohort of bounded campuses or facilities with clear host ownership and no assumed utility-wire use. Each clears design, code, interconnection, consent, commissioning, and restoration-test gates before operation. Publish decision timelines, aggregate denial reasons, study outcomes, cost, customer experience, and local workforce results.

Utility-wire wheeling requires the applicable lawful tariff and access arrangements, demonstrated protection coordination, independent cost-shift review, and repeatable safeguards. Other community microgrids need a configuration-specific legal review, including the statutory exception. A behind-the-meter success may still fail conditions for networked service. That distinction protects customers, utility workers, and the public grid.