Our Story

SustainRNG was born out of the confluence of two developments in the agriculture marketplace.

The first development is the growing demand for increased sustainability, especially in the dairy sector.  For example, in response to consumer demand for milk that comes from humane, healthy, and environmentally responsible farms, major brands such as Walmart and Nestle have set ambitious goals for milk to be sustainably sourced.  Also, the dairy sector itself has established the goal of achieving net zero carbons emissions by 2050 as farmers across the country seek better ways to manage their manure.

The second development was SustainRNG’s proprietary methane capture technology created to compliment modern manure management techniques.  A well-designed anaerobic digester can convert manure into biogas that can be upgraded into renewable natural gas (RNG) and injected in the existing natural gas pipeline network.  SustainRNG’s fixed film anaerobic filter is specialized to capture the micronutrients in manure effluent that are most rapidly broken down to form methane gas. These micronutrients are the leading cause of methane emissions on dairy farms across the country. 

Clean Source Capital developed a business model to partner with dairy farmers to develop on-farm renewable natural gas projects, and formed and capitalized SustainRNG as the business entity to commercialize the proprietary methane capture technology tailored to modern manure management techniques. 

SustainRNG has a two-part mission,

SustainRNG’s business model is to develop, design, engineer,  finance, construct, and operate renewable natural gas generation projects in partnership with dairy farmers.  Our vision is that our work with farmers plays a critical role to help the dairy industry meet its net zero carbon goal.


SustainRNG LLC was founded by CleanSource Capital LLC, based in Charlotte, NC, and is an affiliate of Abundant Power Group LLC.

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1447 South Tryon Street,
Suite 301
Charlotte, NC 28203

15169 N Scottsdale Road
Suite 205
Scottsdale, AZ 85254


Our Story