Company lists · Data refreshed September 2026

Top 25 Agricultural biogas companies based in the United States

Name: Agricultural biogas companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 111 companies tracked

RevenueBase identified 111 agricultural biogas companies headquartered in the United States as of September 2026 and tracks 1,625 professional contacts across them, including 861 with verified work emails. Denver is the largest hub.

This list covers agricultural biogas companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

111Companies

1,625Contacts tracked

861Verified emails

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The 25 largest agricultural biogas companies based in the United States

Ranked by team size

Top 25 of 111 agricultural biogas companies based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to agricultural biogas companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Vanguard Renewables	Indirect evidence	Weston, MA, United StatesHQ checked Sep 19, 2026	201-500	234 contacts →
	Indirect evidence “Vanguard Renewables is a national leader in food and beverage waste recycling and organic waste-to-renewable energy solutions.” Source: RevenueBase Database · checked Sep 19, 2026
2	Maas Energy Works	Indirect evidence	Redding, CA, United StatesHQ checked Sep 19, 2026	51-200	107 contacts →
	Indirect evidence “Maas Energy Works is a family-owned business based in Redding, California.” Source: RevenueBase Database · checked Sep 19, 2026
3	Nacelle Solutions	Partial evidence	Charleston, WV, United StatesHQ checked Sep 19, 2026	51-200	96 contacts →
	Partial evidence “Nacelle is a gas conditioning and processing company serving two distinct markets: biogas and oil and gas.” Source: RevenueBase Database · checked Sep 19, 2026
4	California Bioenergy LLC	Indirect evidence	Tulare, CA, United StatesHQ checked Sep 19, 2026	51-200	94 contacts →
	Indirect evidence “CalBio is the leading developer of dairy digesters for generating renewable electricity and vehicle fuel in California.” Source: RevenueBase Database · checked Sep 19, 2026
5	Biogas Engineering	Partial evidence	Long Beach, CA, United StatesHQ checked Sep 19, 2026	51-200	91 contacts →
	Partial evidence “Biogas Engineering is an award winning, one of the fastest growing companies in field of Renewable Natural Gas.” Source: RevenueBase Database · checked Sep 19, 2026
6	AMP Americas	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	69 contacts →
	Indirect evidence “Founded in 2011, Amp Americas builds, manages, operates and maintains RNG production facilities that convert dairy waste into carbon-negative hydrogen, renewable transportation…” Source: RevenueBase Database · checked Sep 19, 2026
7	Unison Solutions, INC	Indirect evidence	Dubuque, IA, United StatesHQ checked Sep 19, 2026	51-200	47 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
8	Regenis	Indirect evidence	Lynden, WA, United StatesHQ checked Sep 19, 2026	51-200	41 contacts →
	Indirect evidence “On a planet with over seven billion people, our mission is to re-imagine reusable resources to create a valuable supply chain of products for farms, food processors and…” Source: RevenueBase Database · checked Sep 19, 2026
9	Calgren	Partial evidence	Pixley, CA, United StatesHQ checked Sep 19, 2026	51-200	34 contacts →
	Partial evidence “Calgren is a renewable energy company currently producing ethanol, biodiesel, biogas and biomethane.” Source: RevenueBase Database · checked Sep 19, 2026
10	LF Bioenergy	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 19, 2026	11-50	32 contacts →
	Indirect evidence “LF Bioenergy is financially backed by Cresta Fund Management and Marathon Petroleum Corporation.” Source: RevenueBase Database · checked Sep 19, 2026
11	Ductor Corp	Partial evidence	Dayton, OH, United StatesHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “Ductor Corporation is a Finnish cleantech company that recovers both energy and nutrients from organic waste streams, giving biogas operators a portfolio of proprietary, patented…” Source: RevenueBase Database · checked Sep 19, 2026
12	Perennial Energy, LLC	Partial evidence	West Plains, MO, United StatesHQ checked Sep 19, 2026	11-50	26 contacts →
	Partial evidence “Perennial Energy is a design and manufacturing company specializing in biogas processing systems and equipment.” Source: RevenueBase Database · checked Sep 19, 2026
13	Greengasusa	Indirect evidence	Charleston, SC, United StatesHQ checked Sep 19, 2026	11-50	26 contacts →
	Indirect evidence “GreenGasUSA is a portfolio of companies urgently dedicated to sustainable and renewable energy assets and technologies.” Source: RevenueBase Database · checked Sep 19, 2026
14	Bioferm	Indirect evidence	Madison, WI, United StatesHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “BIOFerm is headquartered in Madison, Wisconsin and provides turnkey anaerobic digestion, gas upgrading and solar power systems across the US and Canada.” Source: RevenueBase Database · checked Sep 19, 2026
15	Energy Innovations	Partial evidence	Redding, CA, United StatesHQ checked Sep 19, 2026	51-200	22 contacts →
	Partial evidence “Over 2.1 million MMBTU of biogas in America runs on equipment built by EI.” Source: RevenueBase Database · checked Sep 19, 2026
16	Tent Engineering	Indirect evidence	Bend, OR, United StatesHQ checked Sep 19, 2026	1-10	20 contacts →
	Indirect evidence “Tent Engineering is a team of highly experienced, highly specialized engineers and project managers specifically focused on the bio-gas utilization industry.” Source: RevenueBase Database · checked Sep 19, 2026
17	Taurus Biogas	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 2026	11-50	19 contacts →
	Partial evidence “Taurus Biogas is a leading provider of comprehensive management services for biogas facilities.” Source: RevenueBase Database · checked Sep 19, 2026
18	DMT Clear GAS Solutions	Partial evidence	Tualatin, OR, United StatesHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “DMT Clear Gas Solutions is an award-winning technology supplier specializing in biogas upgrading LCO liquefaction and gas desulfurization for RNG projects in North America and…” Source: RevenueBase Database · checked Sep 19, 2026
19	American Biogas Council	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “The American Biogas Council is the voice of the U.S.” Source: RevenueBase Database · checked Sep 19, 2026
20	Agra Energy Corporation	Indirect evidence	New Franken, WI, United StatesHQ checked Sep 19, 2026	11-50	16 contacts →
	Indirect evidence “AGRA ENERGY is on a mission to introduce cutting-edge technology into the renewable energy industry to transform methane gas waste into clean renewable fuels.” Source: RevenueBase Database · checked Sep 19, 2026
21	3 Rivers Energy Partners	Indirect evidence	Three Rivers, MI, United StatesHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “3 Rivers Energy Partners specializes in producing renewable natural gas (RNG) and fertilizer from organic waste streams, offering expert management of all project aspects and a…” Source: RevenueBase Database · checked Sep 19, 2026
22	Macaw Energies	Partial evidence	Houston, United StatesHQ checked Sep 19, 2026	1-10	15 contacts →
	Partial evidence “Macaw Energies combats global climate change by transforming biogas, flared, and stranded gases into affordable low-carbon energies.” Source: RevenueBase Database · checked Sep 19, 2026
23	Host Bio-Energy Systems North America	Indirect evidence	Vancouver, WA, United StatesHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Converting waste to energy.” Source: RevenueBase Database · checked Sep 19, 2026
24	Carbonbridge	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	1-10	14 contacts →
	Indirect evidence “We design and build proprietary direct-gas bioreactors, to convert gases (like methane and CO2) to value at low CapEx and OpEx.” Source: RevenueBase Database · checked Sep 19, 2026
25	Biotown Biogas	Strong evidence	Reynolds, IN, United StatesHQ checked Sep 19, 2026	11-50	13 contacts →
	Strong evidence “Transforming Waste into Value: With a history in working agriculture in the farming heartland of Indiana, BioTown Biogas collects high-methane farm, organic, and industrial waste…” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: agricultural biogas companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names agricultural biogas companies.
Partial evidence: Its own public description names part of agricultural biogas companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name agricultural biogas companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 111 agricultural biogas companies based in the United States

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Agricultural biogas companies based in the United States at a glance

As of Sep 19, 2026

53.0%Verified-email coverage

14.6Average contacts per company

11-50Median size (employees)

3.6%Largest-city concentration · Denver

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 111 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among agricultural biogas companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “agricultural biogas companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names agricultural biogas companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among agricultural biogas companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 861 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names agricultural biogas companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many agricultural biogas companies are there based in the United States?

RevenueBase identified 111 agricultural biogas companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Vanguard Renewables, headquartered in Weston, tops this list with the largest team on record.

Which city has the most agricultural biogas companies?

Denver leads with 4 headquartered companies, followed by Sisters (4) and Charleston (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 861 verified decision-maker contacts tracked across these 111 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.