The renewable natural gas (RNG) sector is developing a sub-sector of project development, technical expertise and financial services, experts said Wednesday during a webinar.

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The event, hosted by the Northwest Gas Association and NW Alliance for Clean Transportation, heard from a biogas project developer, gas conditioning technology provider and a bank executive who said interest in RNG is growing.

DMT Clear Gas Solutions LLC’s Robert Lems, general manager of U.S. operations, said developing technology is key. “It is not a matter of one technology being better, it is how well you incorporate the technology that matches with a specific site.”

Operators want a technology that has few operating costs and no waste stream to manage, Lems said. The source of the fuel from...