Company lists · Data refreshed November 2026
Top 25 Cleantech consultants based in the United States
RevenueBase identified 2,101 company matches for cleantech consultants associated with the United States as of November 2026 and tracks 21,983 professional contacts across them, including 9,031 with verified work emails. New York is the largest hub.
This list covers company matches for cleantech consultants associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 cleantech consultants based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,164 contacts → | ||||
Exact match “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 815 contacts → | ||||
Exact match “Our mission is simple - to combat climate change through market-based, cost-effective energy, carbon, and water management solutions that make big impacts.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 793 contacts → | ||||
Exact match “Resource Innovations (RI) is an energy transformation firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 474 contacts → | ||||
Exact match “The Roux organization applies sophisticated scientific, technical, and managerial resources to develop and implement effective, efficient, and sustainable solutions to our…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 413 contacts → | ||||
Exact match “Veregy is an award-winning NAESCO-Accredited decarbonization company focusing on accelerating and simplifying the Energy Transition.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 393 contacts → | ||||
Exact match “We are Trio – global energy and sustainability advisors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 379 contacts → | ||||
Exact match “P2S has brought forward-thinking, sustainable engineering solutions to the West Coast and beyond for over 35 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 304 contacts → | ||||
Exact match “At Cascade Energy, we believe in better.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 245 contacts → | ||||
Exact match “Arq is a diversified, environmental technology company with products that enable a cleaner and safer planet while actively reducing our environmental impact.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 230 contacts → | ||||
Exact match “Energy Recovery (Nasdaq: ERII) designs and manufactures world-class energy-saving technology for critical infrastructure that communities rely on every day, driving a more…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 223 contacts → | ||||
Exact match “PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 204 contacts → | ||||
Exact match “The Energy & Environmental Research Center (EERC) is recognized as one of the world's leading developers of cleaner, more efficient energy to power the world and environmental…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 203 contacts → | ||||
Exact match “Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 183 contacts → | ||||
Exact match “Green World Renewable Energy delivers smart, scalable solar engineering and back-office design solutions for residential, commercial, and utility-scale projects across the U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 163 contacts → | ||||
Exact match “Marathon Capital is the largest independent investment bank dedicated to servicing the clean economy.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 159 contacts → | ||||
Exact match “Energetics is a full-service technical and management consulting company specializing in energy (specifically energy modernization, efficiency, and clean energy) and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 148 contacts → | ||||
Exact match “CleanChoice Energy is a cleantech company that empowers people and businesses to easily access climate solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 147 contacts → | ||||
Exact match “Since 1894, Verdantas Flow Labs (formerly Alden) has been a recognized leader in the field of applied fluid dynamic consulting.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 145 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 142 contacts → | ||||
Exact match “Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 131 contacts → | ||||
Exact match “Piper Maddox operates exclusively within Clean Energy and Clean Tech.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 129 contacts → | ||||
Exact match “Michaels Energy is a veteran-owned energy consulting firm that exists to help businesses minimize waste and maximize value.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 127 contacts → | ||||
Exact match “Environ Energy is a leader in accelerating global sustainable energy transformation for more than 30 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 119 contacts → | ||||
Exact match “The Cleantech Open runs the world's largest cleantech accelerator.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 118 contacts → | ||||
Exact match “Winning in clean technologies is complex-new technologies emerge, policies shift, and it’s hard to know which opportunities will scale and which will fail.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “cleantech consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 2,101 cleantech consultants based in the United States
See the full list, filter by size, metro and specialty, and access 9,031 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Cleantech consultants based in the United States at a glance
As of Nov 6, 2026Companies by employee count
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 2,101 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “cleantech consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 9,031 professional contacts with verified work emails across the full matched dataset. 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 November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Cleantech consultants by metro
- Cleantech consultants in New York83
- Cleantech consultants in Houston76
- Cleantech consultants in San Francisco52
- Cleantech consultants in Washington45
- Cleantech consultants in Los Angeles41
- Cleantech consultants in Denver38
- Cleantech consultants in Austin34
- Cleantech consultants in Portland32
- Cleantech consultants in Boston28
- Cleantech consultants in Chicago27
- Cleantech consultants in Seattle26
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “cleantech consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many cleantech consultants are there based in the United States?
RevenueBase identified 2,101 company matches for cleantech consultants associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
OLA tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most cleantech consultants?
New York leads with 83 company records, followed by Houston (76) and San Francisco (52).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 9,031 professional contacts with verified work emails tracked across these 2,101 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,101 cleantech consultants based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Cleantech consultants by geography
- Cleantech consultants based in Melbourne, Australia
- Cleantech consultants based in Sydney, Australia
- Cleantech consultants based in Belo Horizonte, Brazil
- Cleantech consultants based in Rio De Janeiro, Brazil
- Cleantech consultants based in Sao Paulo, Brazil
- Cleantech consultants based in Calgary, Canada
- Cleantech consultants based in Toronto, Canada
- Cleantech consultants based in Vancouver, Canada
- Cleantech consultants based in Santiago, Chile
- Cleantech consultants based in Lyon, France
- Cleantech consultants based in Paris, France
- Cleantech consultants based in Berlin, Germany
Browse the directory
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 SmartSearch, 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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Cleantech consultants based in Melbourne, Australia
- Cleantech consultants based in Sydney, Australia
- Cleantech consultants based in Belo Horizonte, Brazil
- Cleantech consultants based in Rio De Janeiro, Brazil
- Cleantech consultants based in Sao Paulo, Brazil
- Cleantech consultants based in Calgary, Canada
Company intelligence · public preview
Top 25 cleantech consultants based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 2,101 matching company records for cleantech consultants based in the United States, with 21,983 tracked contacts and 9,031 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 cleantech consultants based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  OLAola-austin.comHQ: Austin, TX, United StatesReported employees: Not recorded | Austin, TX, United States | Not recorded | Exact match | 1,164 contacts → |
“OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Energy Solutionsenergy-solution.comHQ: Oakland, CA, United StatesReported employees: 201-500 | Oakland, CA, United States | 201-500 | Exact match | 815 contacts → |
“Our mission is simple - to combat climate change through market-based, cost-effective energy, carbon, and water management solutions that make big impacts.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Resource Innovationsresource-innovations.comHQ: Half Moon Bay, OR, United StatesReported employees: 501-1,000 | Half Moon Bay, OR, United States | 501-1,000 | Exact match | 793 contacts → |
“Resource Innovations (RI) is an energy transformation firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  ROUXrouxinc.comHQ: Islandia, NY, United StatesReported employees: 201-500 | Islandia, NY, United States | 201-500 | Exact match | 474 contacts → |
“The Roux organization applies sophisticated scientific, technical, and managerial resources to develop and implement effective, efficient, and sustainable solutions to our…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Veregyveregy.comHQ: Phoenix, AZ, United StatesReported employees: 501-1,000 | Phoenix, AZ, United States | 501-1,000 | Exact match | 413 contacts → |
“Veregy is an award-winning NAESCO-Accredited decarbonization company focusing on accelerating and simplifying the Energy Transition.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  TRIOtrioadvisory.comHQ: Irvine, MA, United StatesReported employees: 201-500 | Irvine, MA, United States | 201-500 | Exact match | 393 contacts → |
“We are Trio – global energy and sustainability advisors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  P2sp2sinc.comHQ: Long Beach, CA, United StatesReported employees: 201-500 | Long Beach, CA, United States | 201-500 | Exact match | 379 contacts → |
“P2S has brought forward-thinking, sustainable engineering solutions to the West Coast and beyond for over 35 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Cascade Energycascadeenergy.comHQ: Portland, OR, United StatesReported employees: 201-500 | Portland, OR, United States | 201-500 | Exact match | 304 contacts → |
“At Cascade Energy, we believe in better.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  ARQarq.comHQ: Greenwood Village, CO, United StatesReported employees: 201-500 | Greenwood Village, CO, United States | 201-500 | Exact match | 245 contacts → |
“Arq is a diversified, environmental technology company with products that enable a cleaner and safer planet while actively reducing our environmental impact.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Energy Recovery, INCenergyrecovery.comHQ: San Leandro, CA, United StatesReported employees: 201-500 | San Leandro, CA, United States | 201-500 | Exact match | 230 contacts → |
“Energy Recovery (Nasdaq: ERII) designs and manufactures world-class energy-saving technology for critical infrastructure that communities rely on every day, driving a more…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  PEGpegenv.comHQ: Fairfax, VA, United StatesReported employees: 201-500 | Fairfax, VA, United States | 201-500 | Exact match | 223 contacts → |
“PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Energy & Environmental Research Centerundeerc.orgHQ: Grand Forks, ND, United StatesReported employees: 201-500 | Grand Forks, ND, United States | 201-500 | Exact match | 204 contacts → |
“The Energy & Environmental Research Center (EERC) is recognized as one of the world's leading developers of cleaner, more efficient energy to power the world and environmental…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Bright Powerbrightpower.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 203 contacts → |
“Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Green World Renewable Energy LLCgreenworld-energy.comHQ: Brooklyn, MD, United StatesReported employees: 201-500 | Brooklyn, MD, United States | 201-500 | Exact match | 183 contacts → |
“Green World Renewable Energy delivers smart, scalable solar engineering and back-office design solutions for residential, commercial, and utility-scale projects across the U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Marathon Capitalmarathoncapital.comHQ: Chicago, TX, United StatesReported employees: 51-200 | Chicago, TX, United States | 51-200 | Exact match | 163 contacts → |
“Marathon Capital is the largest independent investment bank dedicated to servicing the clean economy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Energeticsenergetics.comHQ: Columbia, MD, United StatesReported employees: 51-200 | Columbia, MD, United States | 51-200 | Exact match | 159 contacts → |
“Energetics is a full-service technical and management consulting company specializing in energy (specifically energy modernization, efficiency, and clean energy) and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Cleanchoice Energycleanchoiceenergy.comHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 148 contacts → |
“CleanChoice Energy is a cleantech company that empowers people and businesses to easily access climate solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Verdantas Flow Labsverdantas.comHQ: Holden, CO, United StatesReported employees: 51-200 | Holden, CO, United States | 51-200 | Exact match | 147 contacts → |
“Since 1894, Verdantas Flow Labs (formerly Alden) has been a recognized leader in the field of applied fluid dynamic consulting.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Four Seasons Environmental, INCfseinc.netHQ: Monroe, OH, United StatesReported employees: 201-500 | Monroe, OH, United States | 201-500 | Exact match | 145 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 |  Spheros Environmentalspherosenv.comHQ: Denver, WA, United StatesReported employees: 201-500 | Denver, WA, United States | 201-500 | Exact match | 142 contacts → |
“Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Piper Maddoxpipermaddox.comHQ: New York, FL, United StatesReported employees: 51-200 | New York, FL, United States | 51-200 | Exact match | 131 contacts → |
“Piper Maddox operates exclusively within Clean Energy and Clean Tech.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Michaels Energy- An Inc. 5000 Companymichaelsenergy.comHQ: La Crosse, IA, United StatesReported employees: 51-200 | La Crosse, IA, United States | 51-200 | Exact match | 129 contacts → |
“Michaels Energy is a veteran-owned energy consulting firm that exists to help businesses minimize waste and maximize value.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Environ Energyenvironenergy.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 127 contacts → |
“Environ Energy is a leader in accelerating global sustainable energy transformation for more than 30 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Cleantech Opencleantechopen.orgHQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 119 contacts → |
“The Cleantech Open runs the world's largest cleantech accelerator.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Cleantech Groupcleantech.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 118 contacts → |
“Winning in clean technologies is complex-new technologies emerge, policies shift, and it’s hard to know which opportunities will scale and which will fail.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,101 company matches
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Cleantech consultants: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,092 records in the displayed employee bands.
9 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 2,101 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Cleantech consultants by metro
- Cleantech consultants in New York83
- Cleantech consultants in Houston76
- Cleantech consultants in San Francisco52
- Cleantech consultants in Washington45
- Cleantech consultants in Los Angeles41
- Cleantech consultants in Denver38
- Cleantech consultants in Austin34
- Cleantech consultants in Portland32
- Cleantech consultants in Boston28
- Cleantech consultants in Chicago27
- Cleantech consultants in Seattle26
Questions about this company list
What does Exact match mean for cleantech consultants?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many cleantech consultants did RevenueBase find based in the United States?
The saved snapshot records 2,101 matching company records, 21,983 tracked contacts and 9,031 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cleantech consultants by geography
- Cleantech consultants based in Melbourne, Australia
- Cleantech consultants based in Sydney, Australia
- Cleantech consultants based in Belo Horizonte, Brazil
- Cleantech consultants based in Rio De Janeiro, Brazil
- Cleantech consultants based in Sao Paulo, Brazil
- Cleantech consultants based in Calgary, Canada
- Cleantech consultants based in Toronto, Canada
- Cleantech consultants based in Vancouver, Canada
- Cleantech consultants based in Santiago, Chile
- Cleantech consultants based in Lyon, France
- Cleantech consultants based in Paris, France
- Cleantech consultants based in Berlin, Germany
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 cleantech consultants based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/cleantech-consultants/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Cleantech consultants based in Melbourne, Australia
- Cleantech consultants based in Sydney, Australia
- Cleantech consultants based in Belo Horizonte, Brazil
- Cleantech consultants based in Rio De Janeiro, Brazil
- Cleantech consultants based in Sao Paulo, Brazil
- Cleantech consultants based in Calgary, Canada
Company intelligence · public preview
Top 25 cleantech consultants based in the United States
RevenueBase records 2,101 matching company records for cleantech consultants based in the United States, with 21,983 tracked contacts and 9,031 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 cleantech consultants based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | OLAola-austin.com HQ: Austin, TX, United StatesReported employees: Not recorded | Austin, TX, United States | Not recorded | Exact match | 1,164 contacts → |
“OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Energy Solutionsenergy-solution.com HQ: Oakland, CA, United StatesReported employees: 201-500 | Oakland, CA, United States | 201-500 | Exact match | 815 contacts → |
“Our mission is simple - to combat climate change through market-based, cost-effective energy, carbon, and water management solutions that make big impacts.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Resource Innovationsresource-innovations.com HQ: Half Moon Bay, OR, United StatesReported employees: 501-1,000 | Half Moon Bay, OR, United States | 501-1,000 | Exact match | 793 contacts → |
“Resource Innovations (RI) is an energy transformation firm.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | ROUXrouxinc.com HQ: Islandia, NY, United StatesReported employees: 201-500 | Islandia, NY, United States | 201-500 | Exact match | 474 contacts → |
“The Roux organization applies sophisticated scientific, technical, and managerial resources to develop and implement effective, efficient, and sustainable solutions to our…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Veregyveregy.com HQ: Phoenix, AZ, United StatesReported employees: 501-1,000 | Phoenix, AZ, United States | 501-1,000 | Exact match | 413 contacts → |
“Veregy is an award-winning NAESCO-Accredited decarbonization company focusing on accelerating and simplifying the Energy Transition.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | TRIOtrioadvisory.com HQ: Irvine, MA, United StatesReported employees: 201-500 | Irvine, MA, United States | 201-500 | Exact match | 393 contacts → |
“We are Trio – global energy and sustainability advisors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | P2sp2sinc.com HQ: Long Beach, CA, United StatesReported employees: 201-500 | Long Beach, CA, United States | 201-500 | Exact match | 379 contacts → |
“P2S has brought forward-thinking, sustainable engineering solutions to the West Coast and beyond for over 35 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Cascade Energycascadeenergy.com HQ: Portland, OR, United StatesReported employees: 201-500 | Portland, OR, United States | 201-500 | Exact match | 304 contacts → |
“At Cascade Energy, we believe in better.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | ARQarq.com HQ: Greenwood Village, CO, United StatesReported employees: 201-500 | Greenwood Village, CO, United States | 201-500 | Exact match | 245 contacts → |
“Arq is a diversified, environmental technology company with products that enable a cleaner and safer planet while actively reducing our environmental impact.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Energy Recovery, INCenergyrecovery.com HQ: San Leandro, CA, United StatesReported employees: 201-500 | San Leandro, CA, United States | 201-500 | Exact match | 230 contacts → |
“Energy Recovery (Nasdaq: ERII) designs and manufactures world-class energy-saving technology for critical infrastructure that communities rely on every day, driving a more…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | PEGpegenv.com HQ: Fairfax, VA, United StatesReported employees: 201-500 | Fairfax, VA, United States | 201-500 | Exact match | 223 contacts → |
“PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Energy & Environmental Research Centerundeerc.org HQ: Grand Forks, ND, United StatesReported employees: 201-500 | Grand Forks, ND, United States | 201-500 | Exact match | 204 contacts → |
“The Energy & Environmental Research Center (EERC) is recognized as one of the world's leading developers of cleaner, more efficient energy to power the world and environmental…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Bright Powerbrightpower.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 203 contacts → |
“Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Green World Renewable Energy LLCgreenworld-energy.com HQ: Brooklyn, MD, United StatesReported employees: 201-500 | Brooklyn, MD, United States | 201-500 | Exact match | 183 contacts → |
“Green World Renewable Energy delivers smart, scalable solar engineering and back-office design solutions for residential, commercial, and utility-scale projects across the U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Marathon Capitalmarathoncapital.com HQ: Chicago, TX, United StatesReported employees: 51-200 | Chicago, TX, United States | 51-200 | Exact match | 163 contacts → |
“Marathon Capital is the largest independent investment bank dedicated to servicing the clean economy.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Energeticsenergetics.com HQ: Columbia, MD, United StatesReported employees: 51-200 | Columbia, MD, United States | 51-200 | Exact match | 159 contacts → |
“Energetics is a full-service technical and management consulting company specializing in energy (specifically energy modernization, efficiency, and clean energy) and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Cleanchoice Energycleanchoiceenergy.com HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 148 contacts → |
“CleanChoice Energy is a cleantech company that empowers people and businesses to easily access climate solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Verdantas Flow Labsverdantas.com HQ: Holden, CO, United StatesReported employees: 51-200 | Holden, CO, United States | 51-200 | Exact match | 147 contacts → |
“Since 1894, Verdantas Flow Labs (formerly Alden) has been a recognized leader in the field of applied fluid dynamic consulting.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Four Seasons Environmental, INCfseinc.net HQ: Monroe, OH, United StatesReported employees: 201-500 | Monroe, OH, United States | 201-500 | Exact match | 145 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 20 | Spheros Environmentalspherosenv.com HQ: Denver, WA, United StatesReported employees: 201-500 | Denver, WA, United States | 201-500 | Exact match | 142 contacts → |
“Environmental insight for complex real-world decisions Spheros Environmental helps clients make clear, defensible decisions in complex environments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Piper Maddoxpipermaddox.com HQ: New York, FL, United StatesReported employees: 51-200 | New York, FL, United States | 51-200 | Exact match | 131 contacts → |
“Piper Maddox operates exclusively within Clean Energy and Clean Tech.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Michaels Energy- An Inc. 5000 Companymichaelsenergy.com HQ: La Crosse, IA, United StatesReported employees: 51-200 | La Crosse, IA, United States | 51-200 | Exact match | 129 contacts → |
“Michaels Energy is a veteran-owned energy consulting firm that exists to help businesses minimize waste and maximize value.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Environ Energyenvironenergy.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 127 contacts → |
“Environ Energy is a leader in accelerating global sustainable energy transformation for more than 30 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Cleantech Opencleantechopen.org HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 119 contacts → |
“The Cleantech Open runs the world's largest cleantech accelerator.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Cleantech Groupcleantech.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 118 contacts → |
“Winning in clean technologies is complex-new technologies emerge, policies shift, and it’s hard to know which opportunities will scale and which will fail.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,101 company matches
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Cleantech consultants: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,092 records in the displayed employee bands.
9 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 2,101 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Cleantech consultants by metro
- Cleantech consultants in New York83
- Cleantech consultants in Houston76
- Cleantech consultants in San Francisco52
- Cleantech consultants in Washington45
- Cleantech consultants in Los Angeles41
- Cleantech consultants in Denver38
- Cleantech consultants in Austin34
- Cleantech consultants in Portland32
- Cleantech consultants in Boston28
- Cleantech consultants in Chicago27
- Cleantech consultants in Seattle26
Questions about this company list
What does Exact match mean for cleantech consultants?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many cleantech consultants did RevenueBase find based in the United States?
The saved snapshot records 2,101 matching company records, 21,983 tracked contacts and 9,031 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Cleantech consultants by geography
- Cleantech consultants based in Melbourne, Australia
- Cleantech consultants based in Sydney, Australia
- Cleantech consultants based in Belo Horizonte, Brazil
- Cleantech consultants based in Rio De Janeiro, Brazil
- Cleantech consultants based in Sao Paulo, Brazil
- Cleantech consultants based in Calgary, Canada
- Cleantech consultants based in Toronto, Canada
- Cleantech consultants based in Vancouver, Canada
- Cleantech consultants based in Santiago, Chile
- Cleantech consultants based in Lyon, France
- Cleantech consultants based in Paris, France
- Cleantech consultants based in Berlin, Germany
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Cite this list
RevenueBase Data Team. Top 25 cleantech consultants based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/cleantech-consultants/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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