Aerial view of a farm that practices regenerative agriculture

We transform organic waste into a force for good.

Circular Value Creation

Our circular, sustainable waste management solution benefits farmers, food and beverage waste generators, and clean energy buyers.

Diversifies energy portfolio Reliable supply of zero emission renewable natural gas Reduces Scope 1 emissions Reduces environmental impact of farming operations Diversifies farm income stream Improves soil health & crop yields, reduces reliance on synthetic fertilizers Increases diversion of food waste from landfills and incinerators Customized programs, built on decades of experience Reliable, comprehensive waste management solution Recycle food and beverage waste at a farm-based digester Practice regenerative agriculture, mitigate on-farm methane Replace natural gas with renewable natural gas Reliable, comprehensive waste management solution projects under development nationwide 40+ operating projects 15+ tons of food waste recycled every 24 hours 600+ tons of food waste depackaged every year 40,000+ Streamlined, single-source solution for organics waste management ensuring efficient, sustainable disposal. Customized programs, built on decades of experience projects under development nationwide 40+ operating projects 15+ tons of food waste recycled every 24 hours 600+ tons of food waste depackaged every year 40,000+ Tailored waste management programs, leveraging a solid track record managing waste for clients such as Cabot Creamery, Ben & Jerry’s, Polar, and others. Increases diversion of food waste from landfills and incinerators projects under development nationwide 40+ operating projects 15+ tons of food waste recycled every 24 hours 600+ tons of food waste depackaged every year 40,000+ Transforming waste into a force for good by repurposing food and beverage waste into energy and significantly reducing reliance on landfills and incineration. Improves soil health & crop yields, reduces reliance on synthetic fertilizers farm acres sustainably fertilized per year 175,000+ tons of liquid low-carbon fertilizer produced per year 4 MILLION+ tons of dairy manure recycled per year 4.5 MILLION+ tons of nutrient-rich animal bedding produced per year 66,000+ Customized manure and nutrient management solutions using complimentary digester byproduct can improve soil fertility and crop yield while reducing use of chemical fertilizers. Diversifies farm income stream farm acres sustainably fertilized per year 175,000+ tons of liquid low-carbon fertilizer produced per year 4 MILLION+ tons of dairy manure recycled per year 4.5 MILLION+ tons of nutrient-rich animal bedding produced per year 66,000+ Additional revenue for dairy farms that host an anaerobic digestion facility. Reduces environmental impact of farming operations farm acres sustainably fertilized per year 175,000+ tons of liquid low-carbon fertilizer produced per year 4 MILLION+ tons of dairy manure recycled per year 4.5 MILLION+ tons of nutrient-rich animal bedding produced per year 66,000+ Sustainable management of dairy cow waste which mitigates methane while creating valuable renewable energy. Reduces Scope 1 emissions cars taken off road for 1 year with CO₂ mitigated 100,000+ tons of CO₂ mitigated per year 470,000+ homes powered for 1 year with renewable energy produced 10,000+ MMBTU of renewable natural gas generated per year 1 MILLION+ RNG purchasers reduce Scope 1 impact to zero for every molecule of natural gas replaced by a molecule of RNG. This is a clear pathway to achieving climate goals. Reliable supply of zero emission renewable natural gas cars taken off road for 1 year with CO₂ mitigated 100,000+ tons of CO₂ mitigated per year 470,000+ homes powered for 1 year with renewable energy produced 10,000+ MMBTU of renewable natural gas generated per year 1 MILLION+ Steady supply of renewable natural gas not only reduces carbon footprint but also ensures energy security. Diversifies energy portfolio cars taken off road for 1 year with CO₂ mitigated 100,000+ tons of CO₂ mitigated per year 470,000+ homes powered for 1 year with renewable energy produced 10,000+ MMBTU of renewable natural gas generated per year 1 MILLION+ Boost resilience with varied energy sources, integrating renewable natural gas for a balanced, sustainable energy mix.

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IMAGE: MATTHIAS ZOMER/PEXELS

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Her dad, David Barstow, co-owns the farm with his brother, Steve Barstow, and his niece and nephew, Shannon and Steve II. David is “the director of special projects,” his daughter teases. “Anytime we are doing anything that is unusual, which is almost always, Dad is in charge.”

In the early 2000s, when the price of milk plummeted and dairy farms everywhere were trying to find a way to diversify, the Barstows began thinking about how to stay alive. They decided to take full advantage of an underutilized commodity the cows produced in abundance, and build something called an anaerobic digester—basically, a manure-fueled power plant.

It was a business decision that happened to have profound environmental consequences.

Cows produce milk, but microorganisms in one of their four stomach compartments also produce methane. They belch methane out of their mouths, and when mountains of manure pile up in oxygen-free lagoons or pits, the micro-organisms keep producing methane there, too.


The Connecticut River cuts between the Green Mountains of Vermont and the White Mountains of New Hampshire and rushes into the heart of Massachusetts, where Denise Barstow Manz stands in the wind, surveying the land her family has farmed for 217 years.

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