Wedoany.com Report-Jul. 1, The Hawai’i Public Utilities Commission has approved the Repower Project of Puna Geothermal Venture (PGV), the operator of the Puna geothermal power plant located on Hawai’i Island. This project involves the replacement of 12 existing generating units with newer, more efficient models. As a result, the total installed capacity of the plant will increase from 38 megawatts (MW) to 46 MW. The installation of the new equipment is scheduled for completion by the end of 2026.

Puna Geothermal Power Plant, Big Island, Hawaii

PGV Senior Director Michael Kaleikini stated: “We have been working on getting this project approval since 2022, and we’re very excited to be able to move ahead. All of it is an improvement.” Earlier in 2024, PGV finalized a Power Purchase Agreement (PPA) for the additional capacity.

Kaleikini also noted that the current generating units have been in operation since 1991 to 1993. Replacing them with three modern units will enhance efficiency while reducing the physical footprint of the facility. This approach is expected to lower operational noise, reduce the need for extensive piping, and minimize potential geothermal emissions.

The upgrade will contribute to Hawai’i’s renewable energy development. With the added capacity, the share of electricity generated from renewable sources is projected to increase to 68%, up from 59% at the end of 2024. Hawaiian Electric Co. reported that the improved efficiency of the new generating units will also have a financial impact on consumers. Residential customers using an average of 500 kilowatt-hours (kWh) per month may see a reduction of approximately $23.62 on their monthly electric bills.

As part of the project’s implementation, PGV is currently grading land to prepare for the new equipment. An environmental assessment is in progress to ensure compliance with regulations and best practices. The company has committed to maintaining transparency throughout the development process by providing regular updates during quarterly public meetings.

The Repower Project reflects PGV’s intention to modernize infrastructure while supporting the region’s clean energy goals. By replacing older equipment with updated technology, the company aims to increase energy output and reliability while minimizing environmental and community impact.