We believe food waste is never trash

It’s a lower energy bill, healthier soil, a stronger community, and a lighter carbon footprint.

Small footprint, big impact

We’ve miniaturized large-scale anaerobic digestion technology.

Scale up, or down

Designed for a wide range of organizations, including supermarkets, university and college campuses, food manufacturing and processing facilities, utilities, and residential communities of 500 to 50,000 people.


25 tons/year
4,500 tons/year

Cost savings

  • Avoid off-site processing of your food waste and reduce hauling and tipping fees.

  • Generate positive ROI with your own renewable natural gas for electricity, facility heat and water, cooking, energy storage, and vehicle fuel & charging.

  • Reduce your carbon emissions to help meet your organization’s environmental, social, and governance (ESG) goals, or monetize your carbon or RIN credits.

  • Decrease reliance on commercial fertilizer by making it yourself. Improve plant growth, soil health, water use efficiency, and long term carbon storage.

Our unique modular systems are compact and come to you complete. They can be easily placed adjacent to your facility and have no odor issues, so they’re well-suited for densely populated areas.
Our outputs range from 11.7 kW to 200+ kW to help maximize economic benefit while ensuring the energy produced serves your environmental and social needs. You get:
  • Standard electrical power with auxiliary radiant heat and lighting
  • Optional prime power, heat, or hot water
  • Optional vehicle fuel and EV charging
Designed and made in Seattle, our units have few moving parts and have undergone more than 200K hours of operational trials giving you peace of mind on your sustainability journey.

Carbon reductions

We understand the carbon markets.

We work closely with you to determine the best approach to leverage the several types of carbon credits generated through our platform, and can help with measurement, verifications, and reporting.

The carbon reductions generated by our systems can be used to meet your internal GHG emissions reduction goals. Our unique food waste-to-energy solution addresses scope 1, 2, and/or 3 emissions.

Interested in learning more?


What kinds of organic waste are accepted?

Chomp systems can convert kitchen trim, post-consumer dining room food scraps, meat, grease, oil, all edible liquids, seafood, dairy products, starch, sugar, fruits, vegetables, small bones, soiled paper products, napkins, paper towels, waxed paper, lightweight wood tableware (stir sticks, toothpicks, spoons, knives, forks), fats, fryer oil, grease trap waste, beverages, alcohol, soup, condiments, eggshells, glycerin, and more. Our units can also accept grass clippings, leaves, small sticks, and other yard waste.

What is the difference between anaerobic digestion and composting?

Anaerobic food waste digestion systems do not need oxygen to break down food waste, as composting, an aerobic process, does. Because they don’t require oxygen, anaerobic units are fully contained and have no nuisance odors, making them ideal for digesting food waste specifically, and for smaller or public spaces. Anaerobic digestion systems are also ideal for dairy, meat and grease which are rich in energy for creating renewable natural gas, and can pose the largest risks for odor at composting facilities. And unlike composting, AD generates renewable natural gas in addition to a soil amendment biofertilizer, while composting's only output is compost.

What can you do with biogas? 

Biogas is a renewable fuel source that can be used in a variety of ways, depending on your needs. It can be converted into renewable electricity, heat, renewable natural gas, compressed natural gas to fuel vehicles, or stored in fuel cells to power electric vehicles. To do this, biogas is first scrubbed of sulfur and water, and then pressurized as needed.

What can you do with the biofertilizer? 

Chomp’s post-digester liquid plant food is an organic biofertilizer and can be used for plants or farm crops as a probiotic nutrient. Our biofertilizer adds carbon to the soil for improved plant growth and long-term carbon storage and can be used to offset water needs. It also reduces the reliance on synthetic, fossil fuel-based fertilizers, which can burn plants and leach into ground water. Our biofertilizer is pathogen-free and safe for growing fruits and vegetables, along with flowers, shrubs, and other plants.

Does the system smell? 

Chomp systems are specifically designed for urban settings. Not only do we use an advanced air scrubber system to eliminate odor from the digestion process, we also include full enclosure for food waste and liquids handling. Our systems are designed so there is no nuisance odor associated with food waste, biogas, or digested organic matter.

Are your digesters and output products safe?

Yes, our systems are extremely safe, and design features address specific safety concerns. A biogas flare automatically and safely burns off any unused biogas. Hydrogen sulfide is also scrubbed from the biogas. Our liquid plant food is pathogen-free and safe to use with edible plants, as well as around kids and pets.

What is the timeline for installing a new system? 

Our systems are prefabricated and can be built and operational in as little as 3 months.

What is required to support and maintain the system? 

All you need to start is a level, secure and accessible site. Our systems are compact, and exact site size requirements are determined by the model you are using. Basic utility connections including power, water, sewer, and communications are also required.

Once up and running, our digesters are designed to be simple and easy to operate, with relatively few moving parts and components. Certain parts of the system do require some inspection and maintenance to ensure proper functionality. For example, the biofilter is a critical component to odor elimination and the biofilter media requires occasional replacement. Most parts of the system requiring maintenance are mechanical or electrical. Chomp provides operating and maintenance manuals and also offers comprehensive service packages to manage maintenance needs for you.

How do you feed the digester? 

Our design team will provide options to fit your site requirements. For example, in our smaller units, an operator could feed the system manually from buckets to a grinding station. From there the food waste will flow automatically into the system. With a larger unit, a design could entail a conveyance piping system from the kitchen or a food processing plant. Another design could entail a cart tipper rolled in or brought in from a collection truck.

Is it difficult to get a system permitted?

We have permitting experts on staff who can provide guidance to your site development team. We have been successful in securing permits for our systems and have a comprehensive understanding of what may be required, though local regulations will vary. Typically, a building permit and fire safety inspection is required. The biogas safety flare is also typically permitted. Depending on your local and state requirements, an environmental review and solid waste exemption may be required, and utility agreements may be needed.

Do you provide operational and maintenance support?

Yes, we offer comprehensive packages that minimize your role to feeding the digester and performing daily housekeeping tasks, while we take care of larger maintenance needs. We can also support you in digester output optimization, liquid plant food management, and education and outreach support.