The Van Ess Project

About this project

The Van Ess renewable natural gas (RNG) project in Sanborn, Iowa, includes the construction of two side-by-side anaerobic digester tanks at the Van Ess Dairy Farm in O’Brien County. The manure from this farm will produce renewable natural gas each year. After the project is complete, the biogas generated by this manure will be captured, cleaned, and converted into RNG, which can be used for transportation fuel, industrial heating, and a host of other applications. Van Ess is part of the third tranche of projects developed under the Brightmark RNG Holdings LLC joint venture with Chevron U.S.A. Inc.

Project benefits

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The Van Ess project is anticipated to reduce greenhouse gas emissions each year.
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Recovering and processing manure from the farms will prevent excess emissions from escaping into the local air and water.
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The facility will generate renewable natural gas every year and biofertilizer, digested dairy fiber for use as cow bedding or as a peat moss substitute, and reclaimed irrigation water.

“This project has been a goal since our family relocated our dairy business to Iowa. We strive to be good neighbors and stewards of the environment, and we’re looking forward to our anaerobic digestor contributing to the community and the farm.”

– Jeremy Van Ess, Family Owner/Operator, Van Ess Dairy and Legacy Dairy


In October 2020, Brightmark LLC and Chevron U.S.A. Inc. originally announced the formation of the Brightmark RNG Holdings LLC joint venture to own projects across the United States to produce and market dairy biomethane, a renewable natural gas. Equity investments by each company in the new venture fund construction of infrastructure and commercial operation of dairy biomethane projects in multiple states. Chevron purchases RNG produced from these projects and markets the volumes for use in vehicles operating on compressed natural gas.

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Transform your waste

Brightmark owns and operates over 30 renewable natural gas projects working with 40 farms across the United States, all of which have been launched in the past three years alone, making the company an emerging leader in the rapidly growing RNG industry. If you’d like to partner on a project with us, please fill out this form to get started!
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