Company lists · Data refreshed October 2026
Top 25 Deep energy retrofit contractors worldwide
RevenueBase identified 3,046 company matches for deep energy retrofit contractors worldwide as of October 2026 and tracks 22,574 professional contacts across them, including 6,491 with verified work emails. The United States is the largest market and Paris the largest hub.
This list covers company matches for deep energy retrofit contractors 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 October 11, 2026. Country and city lists for deep energy retrofit contractors 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 deep energy retrofit contractors worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 11, 2026 · View company records in RevenueBase | |||||
| 2 | 392 contacts → | ||||
Exact match “ARCXIS (Formerly DPIS Builder Services), is the largest provider of HERS inspections, ENERGY STAR ratings, engineering and design, construction quality assurance and other builder…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 3 | 369 contacts → | ||||
Exact match “At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 4 | 293 contacts → | ||||
Exact match “Effy, spécialiste de l’efficience énergétique.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 5 | 245 contacts → | ||||
Exact match “At Ecosystem, we believe in building meaningful relationships with both our clients and employees.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 6 | 210 contacts → | ||||
Exact match “Eurocombles, isoler vos combles, garages et caves à seulement 1€!” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 7 | 206 contacts → | ||||
Exact match “Greenfoot Energy Solutions was established in 2014 by a group of energy experts dedicated to improving energy efficiency in Atlantic Canada.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 8 | 201 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 · Oct 11, 2026 · View company records in RevenueBase | |||||
| 9 | 200 contacts → | ||||
Exact match “As of November of 2025, AMA Group has merged with CMTA!” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 10 | 134 contacts → | ||||
Exact match “GLB ist die verlässliche Partnerin für Lebensräume – Die Expertin für energieeffiziente Sanierung, Neubau, Einfamilien- oder Mehrfamilienhaus, Gewerbe- oder Industriebau…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 11 | 132 contacts → | ||||
Exact match “Founded in 1980, Great Northern Insulation is Ontario's leading building envelope service provider, for the new construction and retrofit markets across commercial, institutional…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 12 | 131 contacts → | ||||
Exact match “We are a global provider of energy efficiency solutions for commercial buildings with five business offerings: HVAC Testing, Adjusting & Balancing, Intelli-Hood® Kitchen…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 13 | 129 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 · Oct 11, 2026 · View company records in RevenueBase | |||||
| 14 | 128 contacts → | ||||
Exact match “Willdan Performance Engineering specializes in energy and infrastructure improvement projects through design-build and performance contracting.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 15 | 128 contacts → | ||||
Exact match “We Make Buildings Brilliant.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 16 | 119 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 · Oct 11, 2026 · View company records in RevenueBase | |||||
| 17 | 117 contacts → | ||||
Exact match “PSD is an energy efficiency services and technology company.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 18 | 111 contacts → | ||||
Exact match “We are a leading provider of retrofit residential decarbonisation across the UK.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 19 | 109 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 · Oct 11, 2026 · View company records in RevenueBase | |||||
| 20 | 108 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 21 | 103 contacts → | ||||
Exact match “Reno Energy est une entreprise spécialisée dans le secteur de la rénovation énergétique mais aussi dans la nouvelle construction.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 22 | 97 contacts → | ||||
Exact match “Earthlight is a Solar and Energy Efficiency contractor dedicated to meeting people’s ecofriendly needs by providing them with quality energy conservation solutions.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 23 | 94 contacts → | ||||
Exact match “Sustainable Building Services (UK) Ltd (SBS) is a purpose-led, multi-award-winning turnkey solutions provider specialising in retrofit energy efficiency and decarbonisation works…” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 24 | 85 contacts → | ||||
Exact match “Halco is a highly accredited, national award-winning contractor that has been providing high-quality solutions to residential and commercial clients since 1984.” Recorded in the RevenueBase company graph · Oct 11, 2026 · View company records in RevenueBase | |||||
| 25 | 81 contacts → | ||||
Exact match “Our organization has a special attitude with the application of innovative solutions and procedures with a value-based approach in building process and in site management.” Recorded in the RevenueBase company graph · Oct 11, 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 “deep energy retrofit contractors”. 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 3,046 deep energy retrofit contractors worldwide
See the full list, filter by size, metro and specialty, and access 6,491 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Deep energy retrofit contractors worldwide at a glance
As of Oct 11, 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 deep energy retrofit contractors are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “deep energy retrofit contractors” 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 6,491 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 11, 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.
Deep energy retrofit contractors by location
13 lists · largest firstEvery Deep energy retrofit contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Deep energy retrofit contractors based in the United States1,100
- Deep energy retrofit contractors based in France379
- Deep energy retrofit contractors based in the United Kingdom225
- Deep energy retrofit contractors based in Italy149
- Deep energy retrofit contractors based in Canada132
- Deep energy retrofit contractors based in Germany93
- Deep energy retrofit contractors based in the Netherlands74
- Deep energy retrofit contractors based in Spain62
- Deep energy retrofit contractors based in Australia54
- Deep energy retrofit contractors based in Ireland50
- Deep energy retrofit contractors based in Belgium44
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 “deep energy retrofit contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many deep energy retrofit contractors are there worldwide?
RevenueBase identified 3,046 company matches for deep energy retrofit contractors worldwide 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?
Noresco tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most deep energy retrofit contractors?
The United States leads with 1,100 companies, followed by France (379) and the United Kingdom (225). Every deep energy retrofit contractors list by country and city is linked on this page.
Which city has the most deep energy retrofit contractors?
Paris leads with 36 company records, followed by London (28) and New York (27).
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 6,491 professional contacts with verified work emails tracked across these 3,046 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 11, 2026.
Ready to reach these companies? Verified emails and direct dials for all 3,046 deep energy retrofit contractors 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 deep energy retrofit contractors worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 3,046 matching company records for deep energy retrofit contractors worldwide, with 22,574 tracked contacts and 6,491 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 11, 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 deep energy retrofit contractors 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 |  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 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Arcxisarcxis.comHQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 392 contacts → |
“ARCXIS (Formerly DPIS Builder Services), is the largest provider of HERS inspections, ENERGY STAR ratings, engineering and design, construction quality assurance and other builder…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Homeworks Energy, INChomeworksenergy.com HQ: Medford, MA, United StatesReported employees: 201-500 | Medford, MA, United States | 201-500 | Exact match | 369 contacts → |
“At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  EFFYeffy.frHQ: Paris, FranceReported employees: 201-500 | Paris, France | 201-500 | Exact match | 293 contacts → |
“Effy, spécialiste de l’efficience énergétique.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Ecosystemecosystem-energy.comHQ: Québec, QC, CanadaReported employees: 201-500 | Québec, QC, Canada | 201-500 | Exact match | 245 contacts → |
“At Ecosystem, we believe in building meaningful relationships with both our clients and employees.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Eurocombles By Opnreurocombles.fr HQ: Solaize, FranceReported employees: Not recorded | Solaize, France | Not recorded | Exact match | 210 contacts → |
“Eurocombles, isoler vos combles, garages et caves à seulement 1€!” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Greenfoot Energy Solutionsgreenfootenergy.caHQ: Moncton, NB, CanadaReported employees: 501-1,000 | Moncton, NB, Canada | 501-1,000 | Exact match | 206 contacts → |
“Greenfoot Energy Solutions was established in 2014 by a group of energy experts dedicated to improving energy efficiency in Atlantic Canada.” Recorded description excerpt · October 11, 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 | 201 contacts → |
“Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  AMA Groupamagroupusa.comHQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 200 contacts → |
“As of November of 2025, AMA Group has merged with CMTA!” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | GLB Genossenschaftglb.ch HQ: Langnau, SwitzerlandReported employees: 501-1,000 | Langnau, Switzerland | 501-1,000 | Exact match | 134 contacts → |
“GLB ist die verlässliche Partnerin für Lebensräume – Die Expertin für energieeffiziente Sanierung, Neubau, Einfamilien- oder Mehrfamilienhaus, Gewerbe- oder Industriebau…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: Woodstock, ON, CanadaReported employees: 201-500 | Woodstock, ON, Canada | 201-500 | Exact match | 132 contacts → |
“Founded in 1980, Great Northern Insulation is Ontario's leading building envelope service provider, for the new construction and retrofit markets across commercial, institutional…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Melink Corporationmelinkcorp.comHQ: Milford, OH, United StatesReported employees: 51-200 | Milford, OH, United States | 51-200 | Exact match | 131 contacts → |
“We are a global provider of energy efficiency solutions for commercial buildings with five business offerings: HVAC Testing, Adjusting & Balancing, Intelli-Hood® Kitchen…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Resaltaresalta.comHQ: Ljubljana, SloveniaReported employees: 51-200 | Ljubljana, Slovenia | 51-200 | Exact match | 129 contacts → |
“Resalta is a leading European energy service company (ESCO) helping organizations reduce costs, lower emissions, and optimize energy use.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Willdan Performance Engineeringwilldan.comHQ: Denver, KS, United StatesReported employees: 51-200 | Denver, KS, United States | 51-200 | Exact match | 128 contacts → |
“Willdan Performance Engineering specializes in energy and infrastructure improvement projects through design-build and performance contracting.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Ecoworksecoworks.tech HQ: Berlin, GermanyReported employees: 51-200 | Berlin, Germany | 51-200 | Exact match | 119 contacts → |
“ecoworks is the trusted partner for the housing sector when it comes to affordable, energy-efficient renovations.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  PSDpsdconsulting.comHQ: Ithaca, NY, United StatesReported employees: 51-200 | Ithaca, NY, United States | 51-200 | Exact match | 117 contacts → |
“PSD is an energy efficiency services and technology company.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Livgreenlivgreen.co.uk HQ: Bristol, United KingdomReported employees: 201-500 | Bristol, United Kingdom | 201-500 | Exact match | 111 contacts → |
“We are a leading provider of retrofit residential decarbonisation across the UK.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Apadanaapadanatech.comHQ: New Hope, MN, United StatesReported employees: 51-200 | New Hope, MN, United States | 51-200 | Exact match | 109 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | 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. | |||||
| 21 |  Reno Energyreno.energyHQ: Liège (angleur), BelgiumReported employees: 51-200 | Liège (angleur), Belgium | 51-200 | Exact match | 103 contacts → |
“Reno Energy est une entreprise spécialisée dans le secteur de la rénovation énergétique mais aussi dans la nouvelle construction.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Earthlight Technologiesearthlighttech.comHQ: Ellington, CT, United StatesReported employees: 51-200 | Ellington, CT, United States | 51-200 | Exact match | 97 contacts → |
“Earthlight is a Solar and Energy Efficiency contractor dedicated to meeting people’s ecofriendly needs by providing them with quality energy conservation solutions.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Sustainable Building Services UK LTDsustainablebuildinguk.com HQ: Skelmersdale, United KingdomReported employees: 51-200 | Skelmersdale, United Kingdom | 51-200 | Exact match | 94 contacts → |
“Sustainable Building Services (UK) Ltd (SBS) is a purpose-led, multi-award-winning turnkey solutions provider specialising in retrofit energy efficiency and decarbonisation works…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | HALCOhalcoenergy.com HQ: Phelps, NY, United StatesReported employees: 51-200 | Phelps, NY, United States | 51-200 | Exact match | 85 contacts → |
“Halco is a highly accredited, national award-winning contractor that has been providing high-quality solutions to residential and commercial clients since 1984.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Teicosgroupteicosgroup.comHQ: Milan, ItalyReported employees: 51-200 | Milan, Italy | 51-200 | Exact match | 81 contacts → |
“Our organization has a special attitude with the application of innovative solutions and procedures with a value-based approach in building process and in site management.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,046 company matches
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Deep energy retrofit contractors: dataset insights
October 11, 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
3,025 records in the displayed employee bands.
21 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 3,046 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 11, 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 ↗
Deep energy retrofit contractors by location
13 lists · largest firstEvery Deep energy retrofit contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Deep energy retrofit contractors based in the United States1,100
- Deep energy retrofit contractors based in France379
- Deep energy retrofit contractors based in the United Kingdom225
- Deep energy retrofit contractors based in Italy149
- Deep energy retrofit contractors based in Canada132
- Deep energy retrofit contractors based in Germany93
- Deep energy retrofit contractors based in the Netherlands74
- Deep energy retrofit contractors based in Spain62
- Deep energy retrofit contractors based in Australia54
- Deep energy retrofit contractors based in Ireland50
- Deep energy retrofit contractors based in Belgium44
Cities
Questions about this company list
What does Exact match mean for deep energy retrofit contractors?
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 deep energy retrofit contractors did RevenueBase find worldwide?
The saved snapshot records 3,046 matching company records, 22,574 tracked contacts and 6,491 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 11, 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 deep energy retrofit contractors worldwide. Snapshot: October 11, 2026. https://revenuebase.ai/companies/browse/deep-energy-retrofit-contractors.
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 deep energy retrofit contractors worldwide
RevenueBase records 3,046 matching company records for deep energy retrofit contractors worldwide, with 22,574 tracked contacts and 6,491 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 11, 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 deep energy retrofit contractors 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 | 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 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Arcxisarcxis.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 392 contacts → |
“ARCXIS (Formerly DPIS Builder Services), is the largest provider of HERS inspections, ENERGY STAR ratings, engineering and design, construction quality assurance and other builder…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Homeworks Energy, INChomeworksenergy.com HQ: Medford, MA, United StatesReported employees: 201-500 | Medford, MA, United States | 201-500 | Exact match | 369 contacts → |
“At HomeWorks Energy, our mission is simple, literally: Energy Efficiency, Simplified.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | EFFYeffy.fr HQ: Paris, FranceReported employees: 201-500 | Paris, France | 201-500 | Exact match | 293 contacts → |
“Effy, spécialiste de l’efficience énergétique.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Ecosystemecosystem-energy.com HQ: Québec, QC, CanadaReported employees: 201-500 | Québec, QC, Canada | 201-500 | Exact match | 245 contacts → |
“At Ecosystem, we believe in building meaningful relationships with both our clients and employees.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Eurocombles By Opnreurocombles.fr HQ: Solaize, FranceReported employees: Not recorded | Solaize, France | Not recorded | Exact match | 210 contacts → |
“Eurocombles, isoler vos combles, garages et caves à seulement 1€!” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Greenfoot Energy Solutionsgreenfootenergy.ca HQ: Moncton, NB, CanadaReported employees: 501-1,000 | Moncton, NB, Canada | 501-1,000 | Exact match | 206 contacts → |
“Greenfoot Energy Solutions was established in 2014 by a group of energy experts dedicated to improving energy efficiency in Atlantic Canada.” Recorded description excerpt · October 11, 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 | 201 contacts → |
“Bright Power is a leading provider of energy efficiency and decarbonization solutions for the real estate industry.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | AMA Groupamagroupusa.com HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 200 contacts → |
“As of November of 2025, AMA Group has merged with CMTA!” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | GLB Genossenschaftglb.ch HQ: Langnau, SwitzerlandReported employees: 501-1,000 | Langnau, Switzerland | 501-1,000 | Exact match | 134 contacts → |
“GLB ist die verlässliche Partnerin für Lebensräume – Die Expertin für energieeffiziente Sanierung, Neubau, Einfamilien- oder Mehrfamilienhaus, Gewerbe- oder Industriebau…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: Woodstock, ON, CanadaReported employees: 201-500 | Woodstock, ON, Canada | 201-500 | Exact match | 132 contacts → |
“Founded in 1980, Great Northern Insulation is Ontario's leading building envelope service provider, for the new construction and retrofit markets across commercial, institutional…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Melink Corporationmelinkcorp.com HQ: Milford, OH, United StatesReported employees: 51-200 | Milford, OH, United States | 51-200 | Exact match | 131 contacts → |
“We are a global provider of energy efficiency solutions for commercial buildings with five business offerings: HVAC Testing, Adjusting & Balancing, Intelli-Hood® Kitchen…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Resaltaresalta.com HQ: Ljubljana, SloveniaReported employees: 51-200 | Ljubljana, Slovenia | 51-200 | Exact match | 129 contacts → |
“Resalta is a leading European energy service company (ESCO) helping organizations reduce costs, lower emissions, and optimize energy use.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Willdan Performance Engineeringwilldan.com HQ: Denver, KS, United StatesReported employees: 51-200 | Denver, KS, United States | 51-200 | Exact match | 128 contacts → |
“Willdan Performance Engineering specializes in energy and infrastructure improvement projects through design-build and performance contracting.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Ecoworksecoworks.tech HQ: Berlin, GermanyReported employees: 51-200 | Berlin, Germany | 51-200 | Exact match | 119 contacts → |
“ecoworks is the trusted partner for the housing sector when it comes to affordable, energy-efficient renovations.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | PSDpsdconsulting.com HQ: Ithaca, NY, United StatesReported employees: 51-200 | Ithaca, NY, United States | 51-200 | Exact match | 117 contacts → |
“PSD is an energy efficiency services and technology company.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Livgreenlivgreen.co.uk HQ: Bristol, United KingdomReported employees: 201-500 | Bristol, United Kingdom | 201-500 | Exact match | 111 contacts → |
“We are a leading provider of retrofit residential decarbonisation across the UK.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Apadanaapadanatech.com HQ: New Hope, MN, United StatesReported employees: 51-200 | New Hope, MN, United States | 51-200 | Exact match | 109 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 · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | 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. | |||||
| 21 | Reno Energyreno.energy HQ: Liège (angleur), BelgiumReported employees: 51-200 | Liège (angleur), Belgium | 51-200 | Exact match | 103 contacts → |
“Reno Energy est une entreprise spécialisée dans le secteur de la rénovation énergétique mais aussi dans la nouvelle construction.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Earthlight Technologiesearthlighttech.com HQ: Ellington, CT, United StatesReported employees: 51-200 | Ellington, CT, United States | 51-200 | Exact match | 97 contacts → |
“Earthlight is a Solar and Energy Efficiency contractor dedicated to meeting people’s ecofriendly needs by providing them with quality energy conservation solutions.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Sustainable Building Services UK LTDsustainablebuildinguk.com HQ: Skelmersdale, United KingdomReported employees: 51-200 | Skelmersdale, United Kingdom | 51-200 | Exact match | 94 contacts → |
“Sustainable Building Services (UK) Ltd (SBS) is a purpose-led, multi-award-winning turnkey solutions provider specialising in retrofit energy efficiency and decarbonisation works…” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | HALCOhalcoenergy.com HQ: Phelps, NY, United StatesReported employees: 51-200 | Phelps, NY, United States | 51-200 | Exact match | 85 contacts → |
“Halco is a highly accredited, national award-winning contractor that has been providing high-quality solutions to residential and commercial clients since 1984.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Teicosgroupteicosgroup.com HQ: Milan, ItalyReported employees: 51-200 | Milan, Italy | 51-200 | Exact match | 81 contacts → |
“Our organization has a special attitude with the application of innovative solutions and procedures with a value-based approach in building process and in site management.” Recorded description excerpt · October 11, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Deep energy retrofit contractors: dataset insights
October 11, 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
3,025 records in the displayed employee bands.
21 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 3,046 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 11, 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 ↗
Deep energy retrofit contractors by location
13 lists · largest firstEvery Deep energy retrofit contractors list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Deep energy retrofit contractors based in the United States1,100
- Deep energy retrofit contractors based in France379
- Deep energy retrofit contractors based in the United Kingdom225
- Deep energy retrofit contractors based in Italy149
- Deep energy retrofit contractors based in Canada132
- Deep energy retrofit contractors based in Germany93
- Deep energy retrofit contractors based in the Netherlands74
- Deep energy retrofit contractors based in Spain62
- Deep energy retrofit contractors based in Australia54
- Deep energy retrofit contractors based in Ireland50
- Deep energy retrofit contractors based in Belgium44
Cities
Questions about this company list
What does Exact match mean for deep energy retrofit contractors?
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 deep energy retrofit contractors did RevenueBase find worldwide?
The saved snapshot records 3,046 matching company records, 22,574 tracked contacts and 6,491 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 11, 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.
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Cite this list
RevenueBase Data Team. Top 25 deep energy retrofit contractors worldwide. Snapshot: October 11, 2026. https://revenuebase.ai/companies/browse/deep-energy-retrofit-contractors.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗