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Hawaii green‑bank model pitches on‑bill repayment and green fees as ways to widen renewables access
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Summary
Hawaii’s Green Infrastructure Authority told APIL lawmakers in Saipan that on‑bill repayment and meter‑tied loans can widen access to rooftop solar and efficiency for renters and low‑income households and attract private capital alongside public funds.
Gwen S. Yamamoto Lau, executive director of the Hawaii Green Infrastructure Authority, presented a practical blueprint for expanding renewables and energy efficiency through public financing tools at the APIL General Assembly.
Hawaii’s authority was capitalized initially with a $150 million Green Energy Market Securitization bond and later augmented with general and federal funds, Lau said. The authority runs a green‑bank program that offers 20‑year loans for rooftop solar and efficiency measures and uses an on‑bill repayment mechanism that places the loan obligation on the utility meter rather than an individual borrower. That change removes credit‑score barriers and enables financing for renters and low‑to‑moderate‑income households because payments are collected with the electricity bill.
"We eliminated all credit barriers," Lau said, describing the program’s shift from conventional underwriting to meter‑tied repayments. The authority also stretched terms to 20 years, reducing monthly payments and improving affordability; private capital has mobilized alongside the public funds because the on‑bill structure reduces repayment risk.
Lau said the authority later focused 100% of its available loan proceeds on underserved ratepayers after the on‑bill mechanism reduced portfolio risk. She cited representative household examples showing a sustained monthly utility saving and lifetime savings over a 20‑year loan. The agency also used loan capital to fund statewide school upgrades; a $46 million, interest‑free loan to the Department of Education funded interior lighting, HVAC upgrades and other retrofits that the authority said would deliver multi‑million‑dollar annual utility savings.
Delegates asked how rooftop PV and battery rules affect utility fuel purchases. A Palau delegate said rooftop projects there appear to create consumer credits but have not reduced overall fuel purchases because of interconnection rules and curtailment. Lau recommended reviewing net‑metering and interconnection rules and adding battery storage to stabilize the grid and capture daytime solar production for local consumption.
Lau suggested jurisdictions consider several finance tools—green banks, tourist‑targeted green fees or stable annual appropriations—and urged states and territories to identify capital sources, risk‑mitigation measures and regulatory changes (such as on‑bill mechanisms) that would attract private investment.
The Hawaii presenter offered to share materials and technical lessons with Pacific jurisdictions and bilateral follow‑ups were requested by several delegations.
