Company lists · Data refreshed September 2026
Top 25 Gas utility consulting firms worldwide
RevenueBase identified 931 gas utility consulting firms worldwide as of September 2026 and tracks 12,967 professional contacts across them, including 3,394 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers gas utility consulting firms worldwide, 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 28, 2026. Country and city lists for gas utility consulting firms follow the table.
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.
The 25 largest gas utility consulting firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 851 contacts → | ||||
Strong evidence “Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 662 contacts → | ||||
Partial evidence “GSPC Gas Company Limited which excels in operational efficiencies and Gujarat Gas Company Limited, a pioneer in business brings 25 years of excellence in gas distribution business…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 578 contacts → | ||||
Indirect evidence “Since 1991, Applied Consultants Inc.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 444 contacts → | ||||
Partial evidence “Since 1988, SERGAS Group has been a leading provider of customized solutions in LPG, SNG, NG, and Medical Gas to a wide range of Industrial, Commercial, and Residential clients.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 435 contacts → | ||||
Partial evidence “Founded in 1957, Unigaz Group is an integrated gas and energy solutions provider operating across the Middle East, Africa, and international markets.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 397 contacts → | ||||
Indirect evidence “Established in 1997, Equinox is a distinguished EPCM service provider globally.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 345 contacts → | ||||
Partial evidence “Brindamos soluciones energéticas a nuestros clientes priorizando la seguridad, la eficiencia y la calidad, a través de la provisión de gas para el confort y el bienestar…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 227 contacts → | ||||
Indirect evidence “Ao seu lado, levando mais eficiência, valor e conforto.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 185 contacts → | ||||
Partial evidence “Project Consulting Services®, Inc.(PCS) provides consulting and engineering expertise to the energy infrastructure industry.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 171 contacts → | ||||
Partial evidence “Since 1987, our knowledgeable team has provided gas operations and maintenance services, gas distribution and mainline construction, electric meter services, directional drilling…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 160 contacts → | ||||
Indirect evidence “AmazonGás é uma envasadora e distribuidora de gás de cozinha que atua nos estados do Amazonas, Rondônia, Roraima e Acre.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 154 contacts → | ||||
Partial evidence “PRF Gas Solutions, founded in 1991, is a leading company in gas technology and infrastructure with a strong global presence.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 149 contacts → | ||||
Indirect evidence “نوفر مجموعة متكاملة من حلول التعبئة والتخزين لغاز البترول المسال، والخدمات الهندسية والاستشارية بنظم متقدمة - إحدى شركات غازكو.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 138 contacts → | ||||
Indirect evidence “The Kleinfelder Group, Inc.(“Kleinfelder”), a leading engineering, design, construction management, construction materials inspection and testing, and environmental professional…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 131 contacts → | ||||
Indirect evidence “At Mondo, we see a bright future.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 114 contacts → | ||||
Indirect evidence “A ES Gás é a concessionária responsável pela distribuição do gás natural canalizado no Espírito Santo, regulada pela Agência de Regulação de Serviços Públicos do Estado – Arsp.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 113 contacts → | ||||
Indirect evidence “Energy Experts International is a leader in providing management consultation to companies, organizations and end-users on energy issues, both domestically and globally.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 104 contacts → | ||||
Partial evidence “Since 1904, Hawaiʻi Gas has been the only franchised gas company in Hawaiʻi.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 77 contacts → | ||||
Partial evidence “For more than 20 years, SíEnergy has been a trusted provider of premium natural gas services to top-rated communities in Texas.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 75 contacts → | ||||
Indirect evidence “At Canyon, we take pride in our service to our customers and our communities.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 72 contacts → | ||||
Partial evidence “Pune Gas is a legacy, serving and innovating gas solutions for industrial and commercial consumers of gas and related products.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 70 contacts → | ||||
Partial evidence “Consulting Services in Infrastructure and Energy” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 62 contacts → | ||||
Strong 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 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 60 contacts → | ||||
Indirect evidence “A Thymos Energia foi desenvolvida para ser líder no seguimento de consultoria e gestão de Energia.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 55 contacts → | ||||
Indirect evidence “SINEF SA propose des services et des conseils dans les domaines de l’eau et de l'énergie pour les collectivités ainsi que pour les particuliers.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
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: gas utility 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 gas utility consulting firms.
- Partial evidence
- Its own public description names part of gas utility consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name gas utility 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 931 gas utility consulting firms worldwide
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Gas utility consulting firms worldwide at a glance
As of Sep 28, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 gas utility 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.
- Coverage
- Every country. Country and city lists for gas utility consulting firms are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “gas utility 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 gas utility 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 gas utility consulting firms, and records with no verified work email.
- 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, 3,394 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 28, 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.
Gas utility consulting firms by location
7 lists · largest firstEvery Gas utility consulting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Gas utility consulting firms based in the United States215
- Gas utility consulting firms based in Brazil75
- Gas utility consulting firms based in the United Kingdom46
- Gas utility consulting firms based in India33
- Gas utility consulting firms based in Germany31
- Gas utility consulting firms based in Canada30
Cities
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 gas utility 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 gas utility consulting firms are there worldwide?
RevenueBase identified 931 gas utility consulting firms worldwide 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?
Willdan, headquartered in Anaheim, tops this list with the largest team on record.
Which country has the most gas utility consulting firms?
The United States leads with 215 companies, followed by Brazil (75) and the United Kingdom (46). Every gas utility consulting firms list by country and city is linked on this page.
Which city has the most gas utility consulting firms?
Houston leads with 26 headquartered companies, followed by Sao Paulo (18) and Bogota (8).
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 3,394 verified decision-maker contacts tracked across these 931 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 28, 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.