Hawaii Gas earns PUC approval to make RNG from Honouliuli biogas

By Hawaii Gas | September 15, 2017

Hawaii Gas, the state’s only regulated gas utility, received approval from the Hawai‘i Public Utilities Commission to install equipment to capture and process biogas from the Honouliuli Wastewater Treatment Plant. Hawaii Gas was awarded the contract from the city and county of Honolulu in July of 2016 after a competitive bidding process.

“Incorporating cost-effective renewable natural gas as part of our fuel mix is a key priority as we continue to do our part to advance Hawaii’s clean energy future,” said Alicia Moy, president and CEO of Hawaii Gas. “We look forward to pursuing similar projects that deliver renewable fuels to our customers and new revenue streams to the city. This is a win-win partnership for the residents of Honolulu and our customers.”

The Honouliuli Wastewater Treatment Plant produces about 800,000 therms of energy per year, which is currently not being utilized. By selling the biogas, the city and county of Honolulu will generate approximately $1.6 million of revenue per year.

“We are pleased that the project to turn wastewater gases into renewable natural gas is moving forward. This first-of-its-kind project in Hawaii will benefit the city financially and more importantly is equivalent to eliminating the need for approximately 15,000 barrels of oil and reducing greenhouse gases by the amount produced by 400 cars annually,” said Lori Kahikina, director of the city and county of Honolulu

Department of Environmental Services. The awarded contract expires Dec. 31, 2024, with a provision to extend the term. Hawaii Gas will invest about $5 million in the infrastructure to process the raw biogas and to connect the Honouliuli Wastewater Treatment Plant to the company’s existing pipeline. The project is estimated to be operational by the end of 2018.