Company lists · Data refreshed September 2026
Top 25 Energy transition consultants based in Chicago, United States
RevenueBase identified 53 energy transition consultants headquartered in Chicago, United States as of September 2026 and tracks 508 professional contacts across them, including 245 with verified work emails. Houston is the largest hub.
This list covers energy transition consultants headquartered in Chicago, 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 16, 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.
The 25 largest energy transition consultants based in Chicago, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 114 contacts → | ||||
Partial evidence “Founded upon a vision of challenging and changing the energy infrastructure to help light up the world, KDM specializes in engineering consulting and design, program and project…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 43 contacts → | ||||
Indirect evidence “Aeterra is a full-service environmental and sustainability consulting firm that provides operating businesses and their owners with meaningful, practical, business-focused advice.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 42 contacts → | ||||
Indirect evidence “Carbon Solutions Group was founded in Chicago, Illinois, in 2006.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 30 contacts → | ||||
Partial evidence “National Retrofitting Group provides sustainability consulting along with a variety of energy retrofitting services to help our customers save money on their energy bills while…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 27 contacts → | ||||
Partial evidence “We are a team of strategy professionals with deep experience providing commercial due diligence, market analytics and strategy support to investors and operators across energy…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 22 contacts → | ||||
Partial evidence “Windfree Wind and Solar Energy Company was founded early in 2009 by a team of creative energy visionaries and early adopters of sustainable technologies.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 20 contacts → | ||||
Indirect evidence “Blue Star Partners is a management consulting firm focused on change management, leadership development, project management and organizing for innovation.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 18 contacts → | ||||
Indirect evidence “Envision Marketing was created in of one of the oldest deregulated states in the US, Illinois.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 17 contacts → | ||||
Partial evidence “Elcora Engineering Solutions stands tall as a trailblazer in the energy sector.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 16 contacts → | ||||
Partial evidence “360 Energy Group is an energy consulting firm that provides comprehensive energy solutions to the public and private sectors in the United States and worldwide, including energy…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 11 contacts → | ||||
Partial evidence “Renewable energy development, financing, and energy portfolio management.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 9 contacts → | ||||
Strong evidence “Transition Equity Partners (“TEP”) is an energy transition-focused private equity firm.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 9 contacts → | ||||
Indirect evidence “Modus Strategic Solutions and its subsidiary, Modus Strategic Solutions Canada, provides strategic solutions on the ground and in the boardroom by helping its clients in the…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 9 contacts → | ||||
Indirect evidence “Hardt Electric is a respected, industry leading electrical contractor based in Chicago, Illinois.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 8 contacts → | ||||
Partial evidence “Aileron provides strategic communications services with a focus on clean energy, infrastructure and advanced manufacturing in 26 states and counting.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 7 contacts → | ||||
Partial evidence “Inova Energy Group is a certified WBE offering management consulting, strategic planning, and project delivery solutions in the areas of energy and sustainability.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 contacts → | ||||
Indirect evidence “The Astor Company opened its doors almost 20 years ago as a cardboard recycling company, beginning a journey of continuous adaptation and evolution which today finds a world-class…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 contacts → | ||||
Partial evidence “E4 LLC is a trusted advisor to C&I and municipal clients navigating the evolving clean energy landscape.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 4 contacts → | ||||
Partial evidence “Global Energy is a WBE Chicago-based Energy Management Firm with 15 years serving the Energy needs of commercial clients throughout Illinois and seven other US states.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Partial evidence “In a race to meet carbon targets, the world has entered the first energy crisis of the clean energy era.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Strong evidence “PerpetualGrid is an advisory firm that is purpose-built to accelerate AI infrastructure and advance the energy transition.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Partial evidence “ReEnergy Solutions is dedicated to the advancement of clean energy through the development and management of hydrogen refueling stations and production plants.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Partial evidence “Kootanla is a data-driven technology and consulting company with a mission to drive meaningful, positive change by solving real problems in the energy and utilities sector.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Partial evidence “The energy industry is changing Enovation Partners provides energy, utility and infrastructure clients with the technical, regulatory, strategic and operational experience…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Partial evidence “We provide engineering, consulting, and technical advisory services to support assets owners, developers, contractors, and investors on various energy projects.” Source: RevenueBase Database · checked Sep 16, 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: energy transition consultants. 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 energy transition consultants.
- Partial evidence
- Its own public description names part of energy transition consultants, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name energy transition consultants. 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 53 energy transition consultants based in Chicago, United States
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Energy transition consultants based in Chicago, United States at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 53 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 energy transition consultants, 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 Chicago, United States whose own description of what they do matches “energy transition consultants”. 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 energy transition consultants), 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 energy transition consultants, and records with no verified work email. Companies headquartered outside Chicago 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, 245 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 16, 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.
Energy transition consultants by metro in the United States
- Energy transition consultants in Houston191
- Energy transition consultants in New York124
- Energy transition consultants in Washington73
- Energy transition consultants in Chicago53
- Energy transition consultants in Austin48
- Energy transition consultants in Denver46
- Energy transition consultants in Boston43
- Energy transition consultants in Los Angeles41
- Energy transition consultants in San Francisco40
- Energy transition consultants in Portland35
- Energy transition consultants in San Diego33
- Energy transition consultants in Atlanta32
- Energy transition consultants in Dallas31
- Energy transition consultants in Seattle26
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 energy transition consultants, 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 energy transition consultants are there based in Chicago, United States?
RevenueBase identified 53 energy transition consultants headquartered in Chicago, 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?
KDM Engineering, headquartered in Chicago, tops this list with the largest team on record.
Which city has the most energy transition consultants?
Houston leads with 191 headquartered companies, followed by New York (124) and Washington (73).
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 245 verified decision-maker contacts tracked across these 53 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 16, 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.
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