Company lists · Data refreshed October 2026
Top 25 Energy efficiency optimization companies based in the United States
RevenueBase identified 2,506 company matches for energy efficiency optimization companies associated with the United States as of October 2026 and tracks 49,698 professional contacts across them, including 21,207 with verified work emails. New York is the largest hub.
This list covers company matches for energy efficiency optimization companies 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 October 12, 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 energy efficiency optimization companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,979 contacts → | ||||
Exact match “Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 2 | 2,206 contacts → | ||||
Exact match “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 3 | 1,513 contacts → | ||||
Exact match “Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 4 | 872 contacts → | ||||
Exact match “Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 5 | 835 contacts → | ||||
Exact match “Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 6 | 835 contacts → | ||||
Exact match “PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 7 | 774 contacts → | ||||
Exact match “Resource Innovations (RI) is an energy transformation firm.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 8 | 658 contacts → | ||||
Exact match “Albireo Energy is a leading independent building controls and energy services provider recognized by customers for creating intelligent, high-performance buildings.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 9 | 491 contacts → | ||||
Exact match “SitelogIQ provides design, engineering, and construction management services that help organizations nationwide modernize their facilities and infrastructure.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 10 | 479 contacts → | ||||
Exact match “NORESCO, an OPTERRA company, helps customers modernize aging building systems and upgrade energy and water infrastructure to meet evolving demands.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 11 | 403 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 · Oct 12, 2026 · View company records in RevenueBase | |||||
| 12 | 387 contacts → | ||||
Exact match “We are Trio – global energy and sustainability advisors.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 13 | 381 contacts → | ||||
Exact match “P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 14 | 380 contacts → | ||||
Exact match “Budderfly is redefining how energy efficiency, resilience, and grid participation can work together across America’s commercial sector.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 15 | 367 contacts → | ||||
Exact match “Wendel is an Architecture, Engineering, Energy Efficiency, and Construction Management Firm that delivers customized solutions and turnkey projects in innovative ways.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 16 | 360 contacts → | ||||
Exact match “National Utility Service, Inc.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 17 | 318 contacts → | ||||
Exact match “Cosentini has a 70+ year history of engineering many of the world’s most iconic buildings.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 18 | 301 contacts → | ||||
Exact match “At Cascade Energy, we believe in better.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 19 | 286 contacts → | ||||
Exact match “We act as an extension of your team, combining deep energy expertise with seamless alignment to your processes to advance projects with confidence.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 20 | 274 contacts → | ||||
Exact match “The world runs on power.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 21 | 268 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 22 | 267 contacts → | ||||
Exact match “Lane Valente Industries offers a broad range of solutions that help multi-site organizations reduce costs through energy reduction, facility maintenance and value engineering.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 23 | 261 contacts → | ||||
Exact match “CMC Energy Services is a woman-owned full-service energy efficiency company with nearly 50 years of experience delivering value-based energy conservation services.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 24 | 249 contacts → | ||||
Exact match “We make technology work in buildings.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 25 | 248 contacts → | ||||
Exact match “Lime Energy is building a new energy future.” Recorded in the RevenueBase company graph · Oct 12, 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 “energy efficiency optimization companies”. 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 2,506 energy efficiency optimization companies based in the United States
See the full list, filter by size, metro and specialty, and access 21,207 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Energy efficiency optimization companies based in the United States at a glance
As of Oct 12, 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 2,506 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 “energy efficiency optimization companies” 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 21,207 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 October 12, 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.
Energy efficiency optimization companies by metro
- Energy efficiency optimization companies in New York100
- Energy efficiency optimization companies in Houston65
- Energy efficiency optimization companies in Atlanta37
- Energy efficiency optimization companies in Chicago35
- Energy efficiency optimization companies in Austin32
- Energy efficiency optimization companies in Dallas30
- Energy efficiency optimization companies in Denver30
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 “energy efficiency optimization companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many energy efficiency optimization companies are there based in the United States?
RevenueBase identified 2,506 company matches for energy efficiency optimization companies associated with the United States as of October 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?
FTI tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most energy efficiency optimization companies?
New York leads with 100 company records, followed by Houston (65) and Atlanta (37).
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 21,207 professional contacts with verified work emails tracked across these 2,506 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 October 12, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,506 energy efficiency optimization companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Energy efficiency optimization companies by geography
- Energy efficiency optimization companies based in Melbourne, Australia
- Energy efficiency optimization companies based in Sydney, Australia
- Energy efficiency optimization companies based in Rio De Janeiro, Brazil
- Energy efficiency optimization companies based in Sao Paulo, Brazil
- Energy efficiency optimization companies based in Calgary, Canada
- Energy efficiency optimization companies based in Montreal, Canada
- Energy efficiency optimization companies based in Toronto, Canada
- Energy efficiency optimization companies based in Vancouver, Canada
- Energy efficiency optimization companies based in Santiago, Chile
- Energy efficiency optimization companies based in Lyon, France
- Energy efficiency optimization companies based in Paris, France
- Energy efficiency optimization companies based in Toulouse, France
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
- Energy efficiency optimization companies based in Melbourne, Australia
- Energy efficiency optimization companies based in Sydney, Australia
- Energy efficiency optimization companies based in Rio De Janeiro, Brazil
- Energy efficiency optimization companies based in Sao Paulo, Brazil
- Energy efficiency optimization companies based in Calgary, Canada
- Energy efficiency optimization companies based in Montreal, Canada
Company intelligence · public preview
Top 25 energy efficiency optimization companies 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 2,506 matching company records for energy efficiency optimization companies based in the United States, with 49,698 tracked contacts and 21,207 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: October 12, 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 energy efficiency optimization companies 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 |  FTIfaithtechinc.comHQ: Menasha, WI, United StatesReported employees: 1,001-5,000 | Menasha, WI, United States | 1,001-5,000 | Exact match | 2,979 contacts → |
“Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Clearesultclearesult.comHQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 2,206 contacts → |
“CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Amerescoameresco.comHQ: Framingham, MA, United StatesReported employees: 1,001-5,000 | Framingham, MA, United States | 1,001-5,000 | Exact match | 1,513 contacts → |
“Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Willdanwilldan.comHQ: Anaheim, CA, United StatesReported employees: 1,001-5,000 | Anaheim, CA, United States | 1,001-5,000 | Exact match | 872 contacts → |
“Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Syska Hennessy Groupsyska.comHQ: New York, United StatesReported employees: 501-1,000 | New York, United States | 501-1,000 | Exact match | 835 contacts → |
“Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  PAEpae-engineers.comHQ: Portland, OR, United StatesReported employees: 201-500 | Portland, OR, United States | 201-500 | Exact match | 835 contacts → |
“PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Resource Innovationsresource-innovations.comHQ: Half Moon Bay, CA, United StatesReported employees: 501-1,000 | Half Moon Bay, CA, United States | 501-1,000 | Exact match | 774 contacts → |
“Resource Innovations (RI) is an energy transformation firm.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Albireo Energyalbireoenergy.comHQ: Edison, NJ, United StatesReported employees: 1,001-5,000 | Edison, NJ, United States | 1,001-5,000 | Exact match | 658 contacts → |
“Albireo Energy is a leading independent building controls and energy services provider recognized by customers for creating intelligent, high-performance buildings.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Sitelogiqsitelogiq.comHQ: Minneapolis, MN, United StatesReported employees: 501-1,000 | Minneapolis, MN, United States | 501-1,000 | Exact match | 491 contacts → |
“SitelogIQ provides design, engineering, and construction management services that help organizations nationwide modernize their facilities and infrastructure.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Noresconoresco.comHQ: Westborough, MA, United StatesReported employees: 201-500 | Westborough, MA, United States | 201-500 | Exact match | 479 contacts → |
“NORESCO, an OPTERRA company, helps customers modernize aging building systems and upgrade energy and water infrastructure to meet evolving demands.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Veregyveregy.comHQ: Phoenix, MO, United StatesReported employees: 501-1,000 | Phoenix, MO, United States | 501-1,000 | Exact match | 403 contacts → |
“Veregy is an award-winning NAESCO-Accredited decarbonization company focusing on accelerating and simplifying the Energy Transition.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  TRIOtrioadvisory.comHQ: Irvine, CA, United StatesReported employees: 201-500 | Irvine, CA, United States | 201-500 | Exact match | 387 contacts → |
“We are Trio – global energy and sustainability advisors.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  P2sp2sinc.comHQ: Long Beach, CA, United StatesReported employees: 201-500 | Long Beach, CA, United States | 201-500 | Exact match | 381 contacts → |
“P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Budderflybudderfly.comHQ: Shelton, CT, United StatesReported employees: 201-500 | Shelton, CT, United States | 201-500 | Exact match | 380 contacts → |
“Budderfly is redefining how energy efficiency, resilience, and grid participation can work together across America’s commercial sector.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Wendel Companieswendelcompanies.comHQ: Williamsville, NY, United StatesReported employees: 201-500 | Williamsville, NY, United States | 201-500 | Exact match | 367 contacts → |
“Wendel is an Architecture, Engineering, Energy Efficiency, and Construction Management Firm that delivers customized solutions and turnkey projects in innovative ways.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  NUS Consulting Groupnusconsulting.comHQ: Park Ridge, NJ, United StatesReported employees: 201-500 | Park Ridge, NJ, United States | 201-500 | Exact match | 360 contacts → |
“National Utility Service, Inc.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Cosentini Associatescosentini.comHQ: Nyc, NY, United StatesReported employees: 201-500 | Nyc, NY, United States | 201-500 | Exact match | 318 contacts → |
“Cosentini has a 70+ year history of engineering many of the world’s most iconic buildings.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Cascade Energycascadeenergy.comHQ: Portland, OR, United StatesReported employees: 201-500 | Portland, OR, United States | 201-500 | Exact match | 301 contacts → |
“At Cascade Energy, we believe in better.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Lake Superior Consultinglsconsulting.comHQ: Duluth, MN, United StatesReported employees: 201-500 | Duluth, MN, United States | 201-500 | Exact match | 286 contacts → |
“We act as an extension of your team, combining deep energy expertise with seamless alignment to your processes to advance projects with confidence.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Illumine-Iilluminei.comHQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 274 contacts → |
“The world runs on power.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Interface Engineering, INCinterfaceengineering.comHQ: Portland, OR, United StatesReported employees: 201-500 | Portland, OR, United States | 201-500 | Exact match | 268 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | Lane Valente Industrieslviusa.com HQ: Smithtown, NY, United StatesReported employees: 201-500 | Smithtown, NY, United States | 201-500 | Exact match | 267 contacts → |
“Lane Valente Industries offers a broad range of solutions that help multi-site organizations reduce costs through energy reduction, facility maintenance and value engineering.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  CMC Energy Servicescmcenergy.comHQ: Fort Washington, PA, United StatesReported employees: 201-500 | Fort Washington, PA, United States | 201-500 | Exact match | 261 contacts → |
“CMC Energy Services is a woman-owned full-service energy efficiency company with nearly 50 years of experience delivering value-based energy conservation services.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Teecomteecom.comHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 249 contacts → |
“We make technology work in buildings.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Lime Energylime-energy.comHQ: Newark, NJ, United StatesReported employees: 201-500 | Newark, NJ, United States | 201-500 | Exact match | 248 contacts → |
“Lime Energy is building a new energy future.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,506 company matches
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Energy efficiency optimization companies: dataset insights
October 12, 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
2,503 records in the displayed employee bands.
3 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 2,506 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: October 12, 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 ↗
Energy efficiency optimization companies by metro
- Energy efficiency optimization companies in New York100
- Energy efficiency optimization companies in Houston65
- Energy efficiency optimization companies in Atlanta37
- Energy efficiency optimization companies in Chicago35
- Energy efficiency optimization companies in Austin32
- Energy efficiency optimization companies in Dallas30
- Energy efficiency optimization companies in Denver30
Questions about this company list
What does Exact match mean for energy efficiency optimization companies?
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 energy efficiency optimization companies did RevenueBase find based in the United States?
The saved snapshot records 2,506 matching company records, 49,698 tracked contacts and 21,207 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: October 12, 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
Energy efficiency optimization companies by geography
- Energy efficiency optimization companies based in Melbourne, Australia
- Energy efficiency optimization companies based in Sydney, Australia
- Energy efficiency optimization companies based in Rio De Janeiro, Brazil
- Energy efficiency optimization companies based in Sao Paulo, Brazil
- Energy efficiency optimization companies based in Calgary, Canada
- Energy efficiency optimization companies based in Montreal, Canada
- Energy efficiency optimization companies based in Toronto, Canada
- Energy efficiency optimization companies based in Vancouver, Canada
- Energy efficiency optimization companies based in Santiago, Chile
- Energy efficiency optimization companies based in Lyon, France
- Energy efficiency optimization companies based in Paris, France
- Energy efficiency optimization companies based in Toulouse, France
Cite this list
RevenueBase Data Team. Top 25 energy efficiency optimization companies based in the United States. Snapshot: October 12, 2026. https://revenuebase.ai/companies/energy-efficiency-optimization-companies/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
- Energy efficiency optimization companies based in Melbourne, Australia
- Energy efficiency optimization companies based in Sydney, Australia
- Energy efficiency optimization companies based in Rio De Janeiro, Brazil
- Energy efficiency optimization companies based in Sao Paulo, Brazil
- Energy efficiency optimization companies based in Calgary, Canada
- Energy efficiency optimization companies based in Montreal, Canada
Company intelligence · public preview
Top 25 energy efficiency optimization companies based in the United States
RevenueBase records 2,506 matching company records for energy efficiency optimization companies based in the United States, with 49,698 tracked contacts and 21,207 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: October 12, 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 energy efficiency optimization companies 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 | FTIfaithtechinc.com HQ: Menasha, WI, United StatesReported employees: 1,001-5,000 | Menasha, WI, United States | 1,001-5,000 | Exact match | 2,979 contacts → |
“Faith Technologies Incorporated (FTI) is a dynamic organization comprised of construction, engineering, manufacturing and renewable energy experts.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Clearesultclearesult.com HQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 2,206 contacts → |
“CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Amerescoameresco.com HQ: Framingham, MA, United StatesReported employees: 1,001-5,000 | Framingham, MA, United States | 1,001-5,000 | Exact match | 1,513 contacts → |
“Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Willdanwilldan.com HQ: Anaheim, CA, United StatesReported employees: 1,001-5,000 | Anaheim, CA, United States | 1,001-5,000 | Exact match | 872 contacts → |
“Willdan (NASDAQ: WLDN) provides professional consulting and technical services to utilities, public agencies and private industry throughout the United States.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Syska Hennessy Groupsyska.com HQ: New York, United StatesReported employees: 501-1,000 | New York, United States | 501-1,000 | Exact match | 835 contacts → |
“Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | PAEpae-engineers.com HQ: Portland, OR, United StatesReported employees: 201-500 | Portland, OR, United States | 201-500 | Exact match | 835 contacts → |
“PAE provides mechanical and electrical engineering design, technology system design, energy modeling and analysis, and more.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Resource Innovationsresource-innovations.com HQ: Half Moon Bay, CA, United StatesReported employees: 501-1,000 | Half Moon Bay, CA, United States | 501-1,000 | Exact match | 774 contacts → |
“Resource Innovations (RI) is an energy transformation firm.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Albireo Energyalbireoenergy.com HQ: Edison, NJ, United StatesReported employees: 1,001-5,000 | Edison, NJ, United States | 1,001-5,000 | Exact match | 658 contacts → |
“Albireo Energy is a leading independent building controls and energy services provider recognized by customers for creating intelligent, high-performance buildings.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Sitelogiqsitelogiq.com HQ: Minneapolis, MN, United StatesReported employees: 501-1,000 | Minneapolis, MN, United States | 501-1,000 | Exact match | 491 contacts → |
“SitelogIQ provides design, engineering, and construction management services that help organizations nationwide modernize their facilities and infrastructure.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Noresconoresco.com HQ: Westborough, MA, United StatesReported employees: 201-500 | Westborough, MA, United States | 201-500 | Exact match | 479 contacts → |
“NORESCO, an OPTERRA company, helps customers modernize aging building systems and upgrade energy and water infrastructure to meet evolving demands.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Veregyveregy.com HQ: Phoenix, MO, United StatesReported employees: 501-1,000 | Phoenix, MO, United States | 501-1,000 | Exact match | 403 contacts → |
“Veregy is an award-winning NAESCO-Accredited decarbonization company focusing on accelerating and simplifying the Energy Transition.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | TRIOtrioadvisory.com HQ: Irvine, CA, United StatesReported employees: 201-500 | Irvine, CA, United States | 201-500 | Exact match | 387 contacts → |
“We are Trio – global energy and sustainability advisors.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | P2sp2sinc.com HQ: Long Beach, CA, United StatesReported employees: 201-500 | Long Beach, CA, United States | 201-500 | Exact match | 381 contacts → |
“P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Budderflybudderfly.com HQ: Shelton, CT, United StatesReported employees: 201-500 | Shelton, CT, United States | 201-500 | Exact match | 380 contacts → |
“Budderfly is redefining how energy efficiency, resilience, and grid participation can work together across America’s commercial sector.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Wendel Companieswendelcompanies.com HQ: Williamsville, NY, United StatesReported employees: 201-500 | Williamsville, NY, United States | 201-500 | Exact match | 367 contacts → |
“Wendel is an Architecture, Engineering, Energy Efficiency, and Construction Management Firm that delivers customized solutions and turnkey projects in innovative ways.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | NUS Consulting Groupnusconsulting.com HQ: Park Ridge, NJ, United StatesReported employees: 201-500 | Park Ridge, NJ, United States | 201-500 | Exact match | 360 contacts → |
“National Utility Service, Inc.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Cosentini Associatescosentini.com HQ: Nyc, NY, United StatesReported employees: 201-500 | Nyc, NY, United States | 201-500 | Exact match | 318 contacts → |
“Cosentini has a 70+ year history of engineering many of the world’s most iconic buildings.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Cascade Energycascadeenergy.com HQ: Portland, OR, United StatesReported employees: 201-500 | Portland, OR, United States | 201-500 | Exact match | 301 contacts → |
“At Cascade Energy, we believe in better.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Lake Superior Consultinglsconsulting.com HQ: Duluth, MN, United StatesReported employees: 201-500 | Duluth, MN, United States | 201-500 | Exact match | 286 contacts → |
“We act as an extension of your team, combining deep energy expertise with seamless alignment to your processes to advance projects with confidence.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Illumine-Iilluminei.com HQ: Austin, TX, United StatesReported employees: 201-500 | Austin, TX, United States | 201-500 | Exact match | 274 contacts → |
“The world runs on power.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Interface Engineering, INCinterfaceengineering.com HQ: Portland, OR, United StatesReported employees: 201-500 | Portland, OR, United States | 201-500 | Exact match | 268 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | Lane Valente Industrieslviusa.com HQ: Smithtown, NY, United StatesReported employees: 201-500 | Smithtown, NY, United States | 201-500 | Exact match | 267 contacts → |
“Lane Valente Industries offers a broad range of solutions that help multi-site organizations reduce costs through energy reduction, facility maintenance and value engineering.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | CMC Energy Servicescmcenergy.com HQ: Fort Washington, PA, United StatesReported employees: 201-500 | Fort Washington, PA, United States | 201-500 | Exact match | 261 contacts → |
“CMC Energy Services is a woman-owned full-service energy efficiency company with nearly 50 years of experience delivering value-based energy conservation services.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Teecomteecom.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 249 contacts → |
“We make technology work in buildings.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Lime Energylime-energy.com HQ: Newark, NJ, United StatesReported employees: 201-500 | Newark, NJ, United States | 201-500 | Exact match | 248 contacts → |
“Lime Energy is building a new energy future.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,506 company matches
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Energy efficiency optimization companies: dataset insights
October 12, 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
2,503 records in the displayed employee bands.
3 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 2,506 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: October 12, 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 ↗
Energy efficiency optimization companies by metro
- Energy efficiency optimization companies in New York100
- Energy efficiency optimization companies in Houston65
- Energy efficiency optimization companies in Atlanta37
- Energy efficiency optimization companies in Chicago35
- Energy efficiency optimization companies in Austin32
- Energy efficiency optimization companies in Dallas30
- Energy efficiency optimization companies in Denver30
Questions about this company list
What does Exact match mean for energy efficiency optimization companies?
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 energy efficiency optimization companies did RevenueBase find based in the United States?
The saved snapshot records 2,506 matching company records, 49,698 tracked contacts and 21,207 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: October 12, 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
Energy efficiency optimization companies by geography
- Energy efficiency optimization companies based in Melbourne, Australia
- Energy efficiency optimization companies based in Sydney, Australia
- Energy efficiency optimization companies based in Rio De Janeiro, Brazil
- Energy efficiency optimization companies based in Sao Paulo, Brazil
- Energy efficiency optimization companies based in Calgary, Canada
- Energy efficiency optimization companies based in Montreal, Canada
- Energy efficiency optimization companies based in Toronto, Canada
- Energy efficiency optimization companies based in Vancouver, Canada
- Energy efficiency optimization companies based in Santiago, Chile
- Energy efficiency optimization companies based in Lyon, France
- Energy efficiency optimization companies based in Paris, France
- Energy efficiency optimization companies based in Toulouse, France
Cite this list
RevenueBase Data Team. Top 25 energy efficiency optimization companies based in the United States. Snapshot: October 12, 2026. https://revenuebase.ai/companies/energy-efficiency-optimization-companies/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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- Energy efficiency optimization companies based in Melbourne, Australia
- Energy efficiency optimization companies based in Sydney, Australia
- Energy efficiency optimization companies based in Rio De Janeiro, Brazil
- Energy efficiency optimization companies based in Sao Paulo, Brazil
- Energy efficiency optimization companies based in Calgary, Canada
- Energy efficiency optimization companies based in Montreal, Canada