Company lists · Data refreshed September 2026
Top 25 Net-zero retrofit consultants worldwide
RevenueBase identified 2,942 company matches for net-zero retrofit consultants worldwide as of September 2026 and tracks 21,912 professional contacts across them, including 7,727 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for net-zero retrofit consultants worldwide, 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 September 29, 2026. Country and city lists for net-zero retrofit consultants follow the table.
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 net-zero retrofit consultants worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,145 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 2 | 342 contacts → | ||||
Exact match “The National Energy Services Company (TARSHID) is a national company wholly owned by the Public Investment Fund (PIF).” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 317 contacts → | ||||
Exact match “Climate change is without a doubt the greatest challenge we face in these times.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 253 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 238 contacts → | ||||
Exact match “At Ecosystem, we believe in building meaningful relationships with both our clients and employees.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 6 | 233 contacts → | ||||
Exact match “As of November of 2025, AMA Group has merged with CMTA!” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 210 contacts → | ||||
Exact match “Dalkia Energy Solutions, a subsidiary of the EDF (Électricité de France) Group, is a national leader in energy efficiency and sustainability for commercial, industrial, and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 205 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 157 contacts → | ||||
Exact match “Zenergi supports and empowers your journey to net zero.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 149 contacts → | ||||
Exact match “Accenta aide les acteurs de l’immobilier à maîtriser leurs charges, valoriser leurs actifs et répondre aux exigences réglementaires, grâce à la performance énergie-carbone.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 144 contacts → | ||||
Exact match “Trailblazing the way to net zero smart buildings Our cutting-edge PROActiv Solutions enhance the health, energy efficiency and sustainability of UK businesses and commercial…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 142 contacts → | ||||
Exact match “Optimised exists to accelerate the shift to a low-carbon future by making energy management work; commercially, operationally and sustainably.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 139 contacts → | ||||
Exact match “Sénova est "le partenaire de la rénovation énergétique de votre habitat".” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 14 | 130 contacts → | ||||
Exact match “Resalta is a leading European energy service company (ESCO) helping organizations reduce costs, lower emissions, and optimize energy use.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 129 contacts → | ||||
Exact match “Recognised as the Consultancy of the Year in 2021 by Energy Live News, Consultus delivers world-class consulting, buying and management services for Business Energy and Business…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 16 | 128 contacts → | ||||
Exact match “We Make Buildings Brilliant.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 125 contacts → | ||||
Exact match “ecoworks is the trusted partner for the housing sector when it comes to affordable, energy-efficient renovations.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 123 contacts → | ||||
Exact match “OTC Flow is your partner in achieving net zero emissions, providing customized solutions for your financial-environmental obligations and aspirations.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 121 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 115 contacts → | ||||
Exact match “Longevity Partners is a multidisciplinary energy and sustainability consultancy.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 109 contacts → | ||||
Exact match “EcoEngineers, an LRQA company, is a consulting, auditing, and advisory firm with an exclusive focus on the energy transition and decarbonization.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 108 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 107 contacts → | ||||
Exact match “Apadana was founded in 2013 by electrical and mechanical engineers who committed their expertise to delivering energy conservation and renewable energy generation solutions with a…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 98 contacts → | ||||
Exact match “BOOTES - India’s 1st NET-ZERO Company.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 90 contacts → | ||||
Exact match “We are a leading provider of retrofit residential decarbonisation across the UK.” Recorded in the RevenueBase company graph · Sep 29, 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 “net-zero retrofit 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 2,942 net-zero retrofit consultants worldwide
See the full list, filter by size, metro and specialty, and access 7,727 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Net-zero retrofit consultants worldwide at a glance
As of Sep 29, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for net-zero retrofit consultants are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “net-zero retrofit 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. 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 7,727 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 September 29, 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.
Net-zero retrofit consultants by location
17 lists · largest firstEvery Net-zero retrofit consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Net-zero retrofit consultants based in the United States536
- Net-zero retrofit consultants based in the United Kingdom407
- Net-zero retrofit consultants based in France309
- Net-zero retrofit consultants based in Germany262
- Net-zero retrofit consultants based in Canada168
- Net-zero retrofit consultants based in Italy111
- Net-zero retrofit consultants based in Spain98
- Net-zero retrofit consultants based in the Netherlands60
- Net-zero retrofit consultants based in India58
- Net-zero retrofit consultants based in Australia54
- Net-zero retrofit consultants based in Switzerland42
- Net-zero retrofit consultants based in Belgium41
- Net-zero retrofit consultants based in Ireland31
Cities
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 “net-zero retrofit consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many net-zero retrofit consultants are there worldwide?
RevenueBase identified 2,942 company matches for net-zero retrofit consultants worldwide as of September 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 country has the most net-zero retrofit consultants?
The United States leads with 536 companies, followed by the United Kingdom (407) and France (309). Every net-zero retrofit consultants list by country and city is linked on this page.
Which city has the most net-zero retrofit consultants?
London leads with 84 company records, followed by Paris (37) and New York (28).
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 7,727 professional contacts with verified work emails tracked across these 2,942 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 September 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,942 net-zero retrofit consultants worldwide. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase 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
Company intelligence · public preview
Top 25 net-zero retrofit consultants worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 2,942 matching company records for net-zero retrofit consultants worldwide, with 21,912 tracked contacts and 7,727 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: September 29, 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 net-zero retrofit consultants worldwide
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 | 1,145 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 · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  ترشيد Tarshidtarshid.com.saHQ: Riyadh, Saudi ArabiaReported employees: 201-500 | Riyadh, Saudi Arabia | 201-500 | Exact match | 342 contacts → |
“The National Energy Services Company (TARSHID) is a national company wholly owned by the Public Investment Fund (PIF).” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  CPWcpwp.comHQ: Birmingham, United KingdomReported employees: 201-500 | Birmingham, United Kingdom | 201-500 | Exact match | 317 contacts → |
“Climate change is without a doubt the greatest challenge we face in these times.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Wardell Armstrong LLP NOW SLRwardell-armstrong.comHQ: Birmingham, United KingdomReported employees: 501-1,000 | Birmingham, United Kingdom | 501-1,000 | Exact match | 253 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 5 |  Ecosystemecosystem-energy.comHQ: Québec, QC, CanadaReported employees: 201-500 | Québec, QC, Canada | 201-500 | Exact match | 238 contacts → |
“At Ecosystem, we believe in building meaningful relationships with both our clients and employees.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  AMA Groupamagroupusa.comHQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 233 contacts → |
“As of November of 2025, AMA Group has merged with CMTA!” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Dalkia Energy Solutionsdalkiasolutions.comHQ: Beverly, MA, United StatesReported employees: 201-500 | Beverly, MA, United States | 201-500 | Exact match | 210 contacts → |
“Dalkia Energy Solutions, a subsidiary of the EDF (Électricité de France) Group, is a national leader in energy efficiency and sustainability for commercial, industrial, and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Bright Powerbrightpower.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 205 contacts → |
“Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Zenergizenergi.co.ukHQ: Chilworth, United KingdomReported employees: 51-200 | Chilworth, United Kingdom | 51-200 | Exact match | 157 contacts → |
“Zenergi supports and empowers your journey to net zero.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  accenta.aiaccenta.aiHQ: Boulogne-billancourt, FranceReported employees: 51-200 | Boulogne-billancourt, France | 51-200 | Exact match | 149 contacts → |
“Accenta aide les acteurs de l’immobilier à maîtriser leurs charges, valoriser leurs actifs et répondre aux exigences réglementaires, grâce à la performance énergie-carbone.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Kendra Energy Solutions LTDkendraenergy.co.uk HQ: Bourne End, United KingdomReported employees: 51-200 | Bourne End, United Kingdom | 51-200 | Exact match | 144 contacts → |
“Trailblazing the way to net zero smart buildings Our cutting-edge PROActiv Solutions enhance the health, energy efficiency and sustainability of UK businesses and commercial…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Optimisedoptimised.netHQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 142 contacts → |
“Optimised exists to accelerate the shift to a low-carbon future by making energy management work; commercially, operationally and sustainably.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Sénovasenova.frHQ: Paris, FranceReported employees: 51-200 | Paris, France | 51-200 | Exact match | 139 contacts → |
“Sénova est "le partenaire de la rénovation énergétique de votre habitat".” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Resaltaresalta.comHQ: Ljubljana, SloveniaReported employees: 51-200 | Ljubljana, Slovenia | 51-200 | Exact match | 130 contacts → |
“Resalta is a leading European energy service company (ESCO) helping organizations reduce costs, lower emissions, and optimize energy use.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Consultusconsultus.comHQ: Leicester, United KingdomReported employees: 51-200 | Leicester, United Kingdom | 51-200 | Exact match | 129 contacts → |
“Recognised as the Consultancy of the Year in 2021 by Energy Live News, Consultus delivers world-class consulting, buying and management services for Business Energy and Business…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Cypress Envirosystemscypressenvirosystems.comHQ: San Jose, CA, United StatesReported employees: 11-50 | San Jose, CA, United States | 11-50 | Exact match | 128 contacts → |
“We Make Buildings Brilliant.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Ecoworksecoworks.tech HQ: Berlin, GermanyReported employees: 51-200 | Berlin, Germany | 51-200 | Exact match | 125 contacts → |
“ecoworks is the trusted partner for the housing sector when it comes to affordable, energy-efficient renovations.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  OTC Flowotcflow.comHQ: Amsterdam, NetherlandsReported employees: 51-200 | Amsterdam, Netherlands | 51-200 | Exact match | 123 contacts → |
“OTC Flow is your partner in achieving net zero emissions, providing customized solutions for your financial-environmental obligations and aspirations.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Michaels Energy- An Inc. 5000 Companymichaelsenergy.comHQ: La Crosse, WI, United StatesReported employees: 51-200 | La Crosse, WI, United States | 51-200 | Exact match | 121 contacts → |
“Michaels Energy is a veteran-owned energy consulting firm that exists to help businesses minimize waste and maximize value.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Longevity Partnerslongevity-partners.comHQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 115 contacts → |
“Longevity Partners is a multidisciplinary energy and sustainability consultancy.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Ecoengineersecoengineers.usHQ: Des Moines, IA, United StatesReported employees: 51-200 | Des Moines, IA, United States | 51-200 | Exact match | 109 contacts → |
“EcoEngineers, an LRQA company, is a consulting, auditing, and advisory firm with an exclusive focus on the energy transition and decarbonization.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Metro Groupezmetro.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 108 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 |  Apadanaapadanatech.comHQ: New Hope, MN, United StatesReported employees: 51-200 | New Hope, MN, United States | 51-200 | Exact match | 107 contacts → |
“Apadana was founded in 2013 by electrical and mechanical engineers who committed their expertise to delivering energy conservation and renewable energy generation solutions with a…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Bootes Impex Tech LTDbootes.in HQ: Gurugram, IndiaReported employees: 51-200 | Gurugram, India | 51-200 | Exact match | 98 contacts → |
“BOOTES - India’s 1st NET-ZERO Company.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Livgreenlivgreen.co.uk HQ: Bristol, United KingdomReported employees: 201-500 | Bristol, United Kingdom | 201-500 | Exact match | 90 contacts → |
“We are a leading provider of retrofit residential decarbonisation across the UK.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,942 company matches
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Net-zero retrofit consultants: dataset insights
September 29, 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
2,926 records in the displayed employee bands.
16 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 2,942 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: September 29, 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 ↗
Net-zero retrofit consultants by location
17 lists · largest firstEvery Net-zero retrofit consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Net-zero retrofit consultants based in the United States536
- Net-zero retrofit consultants based in the United Kingdom407
- Net-zero retrofit consultants based in France309
- Net-zero retrofit consultants based in Germany262
- Net-zero retrofit consultants based in Canada168
- Net-zero retrofit consultants based in Italy111
- Net-zero retrofit consultants based in Spain98
- Net-zero retrofit consultants based in the Netherlands60
- Net-zero retrofit consultants based in India58
- Net-zero retrofit consultants based in Australia54
- Net-zero retrofit consultants based in Switzerland42
- Net-zero retrofit consultants based in Belgium41
- Net-zero retrofit consultants based in Ireland31
Cities
Questions about this company list
What does Exact match mean for net-zero retrofit 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 net-zero retrofit consultants did RevenueBase find worldwide?
The saved snapshot records 2,942 matching company records, 21,912 tracked contacts and 7,727 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: September 29, 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
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Cite this list
RevenueBase Data Team. Top 25 net-zero retrofit consultants worldwide. Snapshot: September 29, 2026. https://revenuebase.ai/companies/browse/net-zero-retrofit-consultants.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 net-zero retrofit consultants worldwide
RevenueBase records 2,942 matching company records for net-zero retrofit consultants worldwide, with 21,912 tracked contacts and 7,727 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: September 29, 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 net-zero retrofit consultants worldwide
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 | 1,145 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 · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | ترشيد Tarshidtarshid.com.sa HQ: Riyadh, Saudi ArabiaReported employees: 201-500 | Riyadh, Saudi Arabia | 201-500 | Exact match | 342 contacts → |
“The National Energy Services Company (TARSHID) is a national company wholly owned by the Public Investment Fund (PIF).” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | CPWcpwp.com HQ: Birmingham, United KingdomReported employees: 201-500 | Birmingham, United Kingdom | 201-500 | Exact match | 317 contacts → |
“Climate change is without a doubt the greatest challenge we face in these times.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Wardell Armstrong LLP NOW SLRwardell-armstrong.com HQ: Birmingham, United KingdomReported employees: 501-1,000 | Birmingham, United Kingdom | 501-1,000 | Exact match | 253 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 5 | Ecosystemecosystem-energy.com HQ: Québec, QC, CanadaReported employees: 201-500 | Québec, QC, Canada | 201-500 | Exact match | 238 contacts → |
“At Ecosystem, we believe in building meaningful relationships with both our clients and employees.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | AMA Groupamagroupusa.com HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 233 contacts → |
“As of November of 2025, AMA Group has merged with CMTA!” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Dalkia Energy Solutionsdalkiasolutions.com HQ: Beverly, MA, United StatesReported employees: 201-500 | Beverly, MA, United States | 201-500 | Exact match | 210 contacts → |
“Dalkia Energy Solutions, a subsidiary of the EDF (Électricité de France) Group, is a national leader in energy efficiency and sustainability for commercial, industrial, and…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Bright Powerbrightpower.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 205 contacts → |
“Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Zenergizenergi.co.uk HQ: Chilworth, United KingdomReported employees: 51-200 | Chilworth, United Kingdom | 51-200 | Exact match | 157 contacts → |
“Zenergi supports and empowers your journey to net zero.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | accenta.aiaccenta.ai HQ: Boulogne-billancourt, FranceReported employees: 51-200 | Boulogne-billancourt, France | 51-200 | Exact match | 149 contacts → |
“Accenta aide les acteurs de l’immobilier à maîtriser leurs charges, valoriser leurs actifs et répondre aux exigences réglementaires, grâce à la performance énergie-carbone.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Kendra Energy Solutions LTDkendraenergy.co.uk HQ: Bourne End, United KingdomReported employees: 51-200 | Bourne End, United Kingdom | 51-200 | Exact match | 144 contacts → |
“Trailblazing the way to net zero smart buildings Our cutting-edge PROActiv Solutions enhance the health, energy efficiency and sustainability of UK businesses and commercial…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Optimisedoptimised.net HQ: Bristol, United KingdomReported employees: 51-200 | Bristol, United Kingdom | 51-200 | Exact match | 142 contacts → |
“Optimised exists to accelerate the shift to a low-carbon future by making energy management work; commercially, operationally and sustainably.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Sénovasenova.fr HQ: Paris, FranceReported employees: 51-200 | Paris, France | 51-200 | Exact match | 139 contacts → |
“Sénova est "le partenaire de la rénovation énergétique de votre habitat".” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Resaltaresalta.com HQ: Ljubljana, SloveniaReported employees: 51-200 | Ljubljana, Slovenia | 51-200 | Exact match | 130 contacts → |
“Resalta is a leading European energy service company (ESCO) helping organizations reduce costs, lower emissions, and optimize energy use.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Consultusconsultus.com HQ: Leicester, United KingdomReported employees: 51-200 | Leicester, United Kingdom | 51-200 | Exact match | 129 contacts → |
“Recognised as the Consultancy of the Year in 2021 by Energy Live News, Consultus delivers world-class consulting, buying and management services for Business Energy and Business…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Cypress Envirosystemscypressenvirosystems.com HQ: San Jose, CA, United StatesReported employees: 11-50 | San Jose, CA, United States | 11-50 | Exact match | 128 contacts → |
“We Make Buildings Brilliant.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Ecoworksecoworks.tech HQ: Berlin, GermanyReported employees: 51-200 | Berlin, Germany | 51-200 | Exact match | 125 contacts → |
“ecoworks is the trusted partner for the housing sector when it comes to affordable, energy-efficient renovations.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | OTC Flowotcflow.com HQ: Amsterdam, NetherlandsReported employees: 51-200 | Amsterdam, Netherlands | 51-200 | Exact match | 123 contacts → |
“OTC Flow is your partner in achieving net zero emissions, providing customized solutions for your financial-environmental obligations and aspirations.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Michaels Energy- An Inc. 5000 Companymichaelsenergy.com HQ: La Crosse, WI, United StatesReported employees: 51-200 | La Crosse, WI, United States | 51-200 | Exact match | 121 contacts → |
“Michaels Energy is a veteran-owned energy consulting firm that exists to help businesses minimize waste and maximize value.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Longevity Partnerslongevity-partners.com HQ: London, United KingdomReported employees: 51-200 | London, United Kingdom | 51-200 | Exact match | 115 contacts → |
“Longevity Partners is a multidisciplinary energy and sustainability consultancy.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Ecoengineersecoengineers.us HQ: Des Moines, IA, United StatesReported employees: 51-200 | Des Moines, IA, United States | 51-200 | Exact match | 109 contacts → |
“EcoEngineers, an LRQA company, is a consulting, auditing, and advisory firm with an exclusive focus on the energy transition and decarbonization.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Metro Groupezmetro.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 108 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Apadanaapadanatech.com HQ: New Hope, MN, United StatesReported employees: 51-200 | New Hope, MN, United States | 51-200 | Exact match | 107 contacts → |
“Apadana was founded in 2013 by electrical and mechanical engineers who committed their expertise to delivering energy conservation and renewable energy generation solutions with a…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Bootes Impex Tech LTDbootes.in HQ: Gurugram, IndiaReported employees: 51-200 | Gurugram, India | 51-200 | Exact match | 98 contacts → |
“BOOTES - India’s 1st NET-ZERO Company.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Livgreenlivgreen.co.uk HQ: Bristol, United KingdomReported employees: 201-500 | Bristol, United Kingdom | 201-500 | Exact match | 90 contacts → |
“We are a leading provider of retrofit residential decarbonisation across the UK.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Net-zero retrofit consultants: dataset insights
September 29, 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
2,926 records in the displayed employee bands.
16 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 across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 2,942 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: September 29, 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 ↗
Net-zero retrofit consultants by location
17 lists · largest firstEvery Net-zero retrofit consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Net-zero retrofit consultants based in the United States536
- Net-zero retrofit consultants based in the United Kingdom407
- Net-zero retrofit consultants based in France309
- Net-zero retrofit consultants based in Germany262
- Net-zero retrofit consultants based in Canada168
- Net-zero retrofit consultants based in Italy111
- Net-zero retrofit consultants based in Spain98
- Net-zero retrofit consultants based in the Netherlands60
- Net-zero retrofit consultants based in India58
- Net-zero retrofit consultants based in Australia54
- Net-zero retrofit consultants based in Switzerland42
- Net-zero retrofit consultants based in Belgium41
- Net-zero retrofit consultants based in Ireland31
Cities
Questions about this company list
What does Exact match mean for net-zero retrofit 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 net-zero retrofit consultants did RevenueBase find worldwide?
The saved snapshot records 2,942 matching company records, 21,912 tracked contacts and 7,727 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: September 29, 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
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Cite this list
RevenueBase Data Team. Top 25 net-zero retrofit consultants worldwide. Snapshot: September 29, 2026. https://revenuebase.ai/companies/browse/net-zero-retrofit-consultants.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗