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Hawaii Interconnection Standards

Date Last Updated11/16/2012
Policy TypeInterconnection Standard
State/FederalHI
Policy Administrator/Contact OfficeHawaii Public Utilities Commission (PUC)
Policy Initiation Date11/5/2002
Policy SummaryHawaii's interconnection standards include simplified requirements for small renewables and separate standard requirements for all other DG, including CHP. The simplified rules apply to renewably-fueled inverter-based systems <10 kW on the island of Kauai and <250 kW on all other islands. Under these rules, systems must use inverters compliant with IEEE 1547 and UL 1741. There are standard timeframes for the application process and minimal fees under the simplified rules.

The state's largest electric utility, Hawaiian Electric Company (HECO), which owns Hawaii Electric Light Company (HELCO) and Maui Electric Company (MECO), uses a set of simple interconnection guidelines. A manual, lockable disconnect switch is required for net-metered systems, and mutual indemnification is required. The state's only other utility, Kauai Island Utility Cooperative (KIUC), has a similar set of rules for net-metering and interconnection. KIUC provides a fast-track process for small generating facilities under 2 MW, while larger systems must undergo more extensive review.
CHP Eligibility RequirementsBoth fossil-fueled and renewably-fueled CHP systems are eligible for standardized interconnection.
Eligible Project Size (MW)All sizes are eligible for standardized procedures.
Applicable FormsApplicable forms can be found here.
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