RAPID/Geothermal/Hawaii/Transmission

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Hawaii Geothermal Transmission & Interconnection(8-HI)

To interconnect a proposed renewable energy project to the existing electric grid, a developer must obtain a Transmission Line Approval from the Hawaii PUC. If the total project costs are less than $2.5 million, the developer doesn’t need PUC approval. The process includes completion of an Interconnection Requirement Study and Power Purchase Agreement to determine necessary upgrades and payment of costs, both subject to PUC approval.

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Determine Which State and Federal Permits Apply

Use this overview flowchart and following steps to learn which federal and state permits apply to your projects.


Permitting at a Glance

Hawaii Federal

Transmission Siting: A developer must obtain Transmission Line Approval from the Hawaii Public Utilities Commission to interconnect a proposed renewable energy project to the existing grid.
Transmission Siting Agency: Hawaii Public Utilities Commission Federal Energy Regulatory Commission
Transmission Siting Threshold: No threshold provided
Public Utility Definition for Transmission Facility: In Hawaii, transmission facilities are covered by the definition of 'public utility.' Statutes define "public utility" in Hawaii Revised Statues 269-1 to include every person who may own, control, operate, or manage…any plant or equipment, or any part thereof, directly or indirectly for public use…for production, conveyance, transmission, delivery, or furnishing of light, power, heat, cold, water, gas, or oil. [1]
Public Utility Regulatory Authority Certification Transmission Threshold: No threshold provided