- Associated Press - Tuesday, April 18, 2017

HONOLULU (AP) - Honolulu officials say they are moving forward with plans to sell biogas produced at the city’s sewage plant to Hawaii Gas Co.

The gas company says it plans to spend about $5 million on equipment to clean the sewage plant’s biogas before adding it into their pipelines. It also wants to construct approximately one mile (1.61 kilometer) of new pipeline to connect its purification system to the company’s existing synthetic natural gas pipeline.

Hawaii Gas would buy gas from the city at $2 a therm, the Honolulu Star Advertiser reported (https://bit.ly/2pxy3Se) Monday. Currently, the gas company purchases gas at about $1.75 per therm.

Biogas is fuel comprised of about 60 percent methane and 40 percent carbon dioxide, which the Honouliuli Wastewater Treatment Plant had been capturing and burning off.

The city’s biogas would make Hawaii Gas’ fuel supply 5 percent renewable, according to the company.

“We are figuring out ways to take waste and turn it into useful forms of energy,” said Joseph Boivin, senior vice president of business development and corporate affairs at Hawaii Gas. “There is more of this type of work that can be done in Hawaii.”

Hawaii Gas will be able to pump the clean biogas into its system a year after the Public Utility Commission approves its contract with the city, Boivin said.

The company hopes to find other renewable gas options in the future, Boivin said.

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Information from: Honolulu Star-Advertiser, https://www.staradvertiser.com

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