Company lists · Data refreshed September 2026

Top 25 Biogas consulting firms based in the United States

Name: Biogas consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 295 companies tracked

RevenueBase identified 295 biogas consulting firms headquartered in the United States as of September 2026 and tracks 3,479 professional contacts across them, including 1,319 with verified work emails. Houston is the largest hub.

This list covers biogas consulting firms 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 27, 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 27, 2026 86% judged on-target in blind review

295Companies

3,479Contacts tracked

1,319Verified emails

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The 25 largest biogas consulting firms based in the United States

Ranked by team size

Top 25 of 295 biogas consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to biogas consulting firms: 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	Applied Consultants	Indirect evidence	Longview, TX, United StatesHQ checked Sep 27, 2026	501-1,000	578 contacts →
	Indirect evidence “Since 1991, Applied Consultants Inc.” Source: RevenueBase Database · checked Sep 27, 2026
2	SDS Petroleum Consultants	Indirect evidence	Tyler, TX, United StatesHQ checked Sep 27, 2026	51-200	122 contacts →
	Indirect evidence “Welcome to SDS Petroleum Consultants company page In Scott Stovall founded SDS Petroleum Consultants L.L.C.” Source: RevenueBase Database · checked Sep 27, 2026
3	Halker	Partial evidence	Centennial, CO, United StatesHQ checked Sep 27, 2026	51-200	121 contacts →
	Partial evidence “Halker Consulting provides custom engineered and configured services in Project Assessment and Planning, Engineering and Design, & Consulting and Implementation Guidance.” Source: RevenueBase Database · checked Sep 27, 2026
4	Blade Energy Partners	Partial evidence	Frisco, TX, United StatesHQ checked Sep 27, 2026	51-200	103 contacts →
	Partial evidence “Founded in Blade Energy Partners is an independent consulting company known for overcoming the challenges of complex multidisciplinary projects in the oil, gas, and geothermal…” Source: RevenueBase Database · checked Sep 27, 2026
5	Nacelle Solutions	Partial evidence	Charleston, WV, United StatesHQ checked Sep 27, 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 27, 2026
6	Integrity Environmental Solutions	Partial evidence	Richmond, VA, United StatesHQ checked Sep 27, 2026	201-500	96 contacts →
	Partial evidence “Integrity Environmental Solutions is an engineering and consulting firm offering integrated landfill gas (LFG) and solid waste services.” Source: RevenueBase Database · checked Sep 27, 2026
7	Biogas Engineering	Partial evidence	Long Beach, CA, United StatesHQ checked Sep 27, 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 27, 2026
8	Morrow Energy	Indirect evidence	Midland, TX, United StatesHQ checked Sep 27, 2026	51-200	86 contacts →
	Indirect evidence “Morrow Energy is the backbone of American RNG.” Source: RevenueBase Database · checked Sep 27, 2026
9	BCCK	Indirect evidence	Midland, TX, United StatesHQ checked Sep 27, 2026	51-200	75 contacts →
	Indirect evidence “As a full, self-performing EPC service provider (concept, engineering, design, fabrication, manufacturing, & construction), partnering with BCCK as a single-source provider allows…” Source: RevenueBase Database · checked Sep 27, 2026
10	Shactee Engineering	Indirect evidence	Woodridge, IL, United StatesHQ checked Sep 27, 2026	51-200	62 contacts →
	Indirect evidence “Shäctee Engineering, LLC is a woman owned engineering design firm specializing in natural gas pipeline design and inspection for local distribution utility companies.” Source: RevenueBase Database · checked Sep 27, 2026
11	BEL Environmental Engineering, LLC	Partial evidence	Livonia, MI, United StatesHQ checked Sep 27, 2026	11-50	50 contacts →
	Partial evidence “BEL Environmental Engineering, LLC (BEL) is a solid waste consulting firm that specializes in landfill construction quality assurance (CQA) and landfill gas (LFG) systems.” Source: RevenueBase Database · checked Sep 27, 2026
12	Venture Engineering & Construction, INC	Indirect evidence	Warrendale, PA, United StatesHQ checked Sep 27, 2026	51-200	50 contacts →
	Indirect evidence “Venture Engineering & Construction provides high-value consultancy, engineering, project and construction management services to the world’s energy, power, and process industries.” Source: RevenueBase Database · checked Sep 27, 2026
13	Vision RNG	Indirect evidence	Canonsburg, PA, United StatesHQ checked Sep 27, 2026	11-50	48 contacts →
	Indirect evidence “Vision RNG brought together a team of seasoned professionals with decades of experience across the natural gas and waste management industries.” Source: RevenueBase Database · checked Sep 27, 2026
14	Unison Solutions, INC	Indirect evidence	Dubuque, IA, United StatesHQ checked Sep 27, 2026	51-200	47 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
15	Morrow Renewables, LLC	Indirect evidence	Mckinney, TX, United StatesHQ checked Sep 27, 2026	51-200	46 contacts →
	Indirect evidence “Morrow Renewables, LLC, has been busy reducing global methane emissions, and revolutionizing landfill gas (LFG) collection and refinement technologies utilizing its own patented…” Source: RevenueBase Database · checked Sep 27, 2026
16	Settje Agri-Services And Engineering, INC	Indirect evidence	Raymond, NE, United StatesHQ checked Sep 27, 2026	11-50	39 contacts →
	Indirect evidence “Settje Agri-Services and Engineering was founded in 1997 with the goal of providing engineering and compliance related services to the livestock production sector.” Source: RevenueBase Database · checked Sep 27, 2026
17	TKE Engineering & Design	Indirect evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	11-50	39 contacts →
	Indirect evidence “Who We Are TKE was founded in Houston, Texas in 1992 by Terry Eleiott, PE and his wife Kathy Eleiott.” Source: RevenueBase Database · checked Sep 27, 2026
18	Vavco LLC	Indirect evidence	Pittsburgh, PA, United StatesHQ checked Sep 27, 2026	11-50	35 contacts →
	Indirect evidence “VAVCO, LLC is a natural gas process and control engineering firm, specializing in design, project management, procurement, construction supervision and commissioning of Production…” Source: RevenueBase Database · checked Sep 27, 2026
19	Northern Biogas	Partial evidence	Morgantown, WV, United StatesHQ checked Sep 27, 2026	11-50	34 contacts →
	Partial evidence “With decades of experience in gas processing, dairies, and digester construction, Northern Biogas is the perfect partner for your RNG project.” Source: RevenueBase Database · checked Sep 27, 2026
20	Sagebrush Equipment	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 27, 2026	51-200	33 contacts →
	Indirect evidence “Drawing from a proud history of almost 60 years, Sagebrush has unparalleled experience which allows us to bring unique expertise to all facets of the custom fabrication equipment…” Source: RevenueBase Database · checked Sep 27, 2026
21	LF Bioenergy	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 27, 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 27, 2026
22	Clarke Energy - USA	Indirect evidence	Glendale, WI, United StatesHQ checked Sep 27, 2026	51-200	31 contacts →
	Indirect evidence “Clarke Energy USA, a Rehlko Company, delivers advanced energy solutions that support resilience, efficiency, and sustainability across critical sectors.” Source: RevenueBase Database · checked Sep 27, 2026
23	UGS	Partial evidence	Houston, TX, United StatesHQ checked Sep 27, 2026	11-50	31 contacts →
	Partial evidence “UGS Unconventional Gas Solutions, designs and builds Gas treatment systems including Biogas upgrading, Compression, Acid Gas Removal, Dehydration, BTU Reduction, Heavy Hydrocarbon…” Source: RevenueBase Database · checked Sep 27, 2026
24	Tri-Mont Engineering, CO	Indirect evidence	Plymouth, MA, United StatesHQ checked Sep 27, 2026	11-50	29 contacts →
	Indirect evidence “TRI-MONT Engineering Co.” Source: RevenueBase Database · checked Sep 27, 2026
25	Ductor Corp	Partial evidence	Dayton, OH, United StatesHQ checked Sep 27, 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 27, 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: biogas consulting firms. 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 biogas consulting firms.
Partial evidence: Its own public description names part of biogas consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name biogas consulting firms. 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 295 biogas consulting firms based in the United States

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Biogas consulting firms based in the United States at a glance

As of Sep 27, 2026

37.9%Verified-email coverage

11.8Average contacts per company

1-10Median size (employees)

7.5%Largest-city concentration · Houston

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

179

11-50

51-200

201-500

501-1,000

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 295 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 biogas consulting firms, 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 “biogas consulting firms”. 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 biogas consulting firms), 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 biogas consulting firms, 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, 1,319 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 27, 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 biogas consulting firms, 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 biogas consulting firms are there based in the United States?

RevenueBase identified 295 biogas consulting firms 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?

Applied Consultants, headquartered in Longview, tops this list with the largest team on record.

Which city has the most biogas consulting firms?

Houston leads with 22 headquartered companies, followed by Denver (14) and Dallas (5).

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 1,319 verified decision-maker contacts tracked across these 295 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 27, 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.