In a public-private partnership, Bulk Handling Systems (BHS) is partnering with Napa Recycling and Waste Services and the City of Napa in the development and operation of an industry-leading dry anaerobic digestion and renewable natural gas (AD-RNG) facility at the existing Napa Recycling and Composting Facility.
“We are excited to be partnering with the City of Napa, and Napa Recycling on this important carbon reducing project,” said Eric Herbert, president of Zero Waste Energy and BHS.
The AD-RNG facility features Zero Waste Energy’s SMARTFERM® Plug Flow system which is specially designed to recover the energy content from Napa Recycling’s existing organic waste stream in the form of biogas. The facility will provide the City of Napa with the ability to produce renewable natural gas (RNG) while also significantly reducing greenhouse gas emissions.
“This project virtually eliminates methane emissions from organic waste being disposed of from the service area,” said Herbert. “Additionally, we will also replace the fossil fuel derived gas used by the trucking fleet with renewable natural gas generated from organic waste converted onsite. A truly circular solution.”
The AD-RNG facility is estimated to generate up to 500,000 diesel gallon equivalents of CNG annually; enough to power approximately 50 heavy duty waste collection trucks or similar high-mileage vehicles per year. The renewable natural gas (RNG) generated will be used to fuel Napa Recycling’s fleet of waste collection trucks. The facility can also utilize its RNG to generate electricity for the fleet should local regulations require refuse and recycling fleets to transition to electric-only vehicles.
Published April 2026