HI HB1864

Changes the definition of renewable portfolio standard (RPS) from percentage of electrical energy "sales" to percentage of electrical energy "generation" to more accurately measure Hawaii's progress toward its 100% renewable energy goal by December 31, 2045.

Modifies RPS targets for 2030, 2040, and 2045 to be calculated based on generation rather than sales, changing the standards to 40%, 70%, and 100% respectively.

Addresses two calculation discrepancies: excludes customer-sited grid-connected renewable energy from the denominator under the current sales-based method, and excludes energy losses occurring between generation and customer meters.

Updates language in Section 269-92 regarding events beyond an electric utility company's reasonable control that may excuse failure to meet RPS standards, including weather, natural disasters, mechanical failure, and inability to acquire cost-effective renewable energy.

Takes effect on July 1, 2050.