Company lists · Data refreshed September 2026
Top 25 Sustainable development firms based in Ireland
RevenueBase identified 86 company matches for sustainable development firms associated with Ireland as of September 2026 and tracks 920 professional contacts across them, including 335 with verified work emails. Dublin is the largest hub.
This list covers company matches for sustainable development firms associated with Ireland, 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 22, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest sustainable development firms based in Ireland
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 197 contacts → | ||||
Exact match “Leading international development consultancy Providing communities, economies and environments with the means and opportunities to grow Founded in 1975, Landell Mills is a…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 2 | 116 contacts → | ||||
Exact match “Fehily Timoney and Company is a Irish civil and environmental, engineering, scientific and planning consultancy specialising in the areas of Sustainable Infrastructure, Planning…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 3 | 65 contacts → | ||||
Exact match “Tandem is an engineering consultancy specialising in project management, multi-disciplined engineering design, construction management, energy & carbon reduction, EHS and talent…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 4 | 48 contacts → | ||||
Exact match “Developing a workforce ready to meet today’s sustainability needs has never been more important.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 5 | 42 contacts → | ||||
Exact match “Climeaction Cork & Boston | B Corp Certified | ISO 9001 & Accredited Climeaction is an industrial decarbonisation and carbon intelligence company.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 6 | 31 contacts → | ||||
Exact match “Established in 1989 by the economic development agencies of Ireland, International Development Ireland (IDI) is an Irish-based organisation specialising in providing a wide range…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 7 | 22 contacts → | ||||
Exact match “Enviroguide Consulting has an established reputation for delivering environmental and sustainability consultancy services including ecology, environmental impact assessment…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 8 | 21 contacts → | ||||
Exact match “Climate change, ESG requirements and the transition to a low-carbon economy are reshaping the future of real estate.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 9 | 18 contacts → | ||||
Exact match “Welcome to Plan Energy, your trusted partner in decarbonisation and renewable energy.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 10 | 15 contacts → | ||||
Exact match “Passive Dynamics was set up in 2020 with a vision that expert knowledge and passion can empower.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 11 | 14 contacts → | ||||
Exact match “SustainabilityWorks is a consultancy on a mission to accelerate climate action and sustainability in Ireland.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 12 | 13 contacts → | ||||
Exact match “LP3 is an experienced and dynamic company providing specialist and dedicated services to the Renewable Energy sector across Ireland.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 13 | 11 contacts → | ||||
Exact match “Meehan Green is a company based in Dublin, Ireland that provides sustainability and green building certifications consulting services.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 14 | 11 contacts → | ||||
Exact match “Crocon Engineers Ltd, can provide advice, across a wide-ranging spectrum of projects in which your business may be involved, now or in the future.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 15 | 11 contacts → | ||||
Exact match “Veri Connect empowers your organisation to deliver measurable sustainability outcomes.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 16 | 10 contacts → | ||||
Exact match “Danu Energy Consulting provides project management and engineering services to assist in the development, construction and trading of renewable energy and wider sustainability…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 17 | 9 contacts → | ||||
Exact match “Sustainable Development Research Institute (SDRI) will build on the extensive foundation of applied research within the TUS Thurles campus to create a Nationally and…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 18 | 8 contacts → | ||||
Exact match “At VisionGreen we are dedicated to making sustainability accessible to businesses of all sizes.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 19 | 8 contacts → | ||||
Exact match “At BFA Consulting, we are passionate about sustainability.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 20 | 6 contacts → | ||||
Exact match “Codex Energy Consultants Ltd is a company of specialist engineering and energy consultants.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 21 | 4 contacts → | ||||
Exact match “Toward Zero Carbon Ltd is unique in the energy services sector because it combines a broad range of skills and disciplines, which are required to deal with the technical…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 22 | 3 contacts → | ||||
Exact match “Specialties- Development & implementation of renewable energy & energy efficiency projects • Strategy development & investment planning • Energy savings planning & retrofits •…” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 23 | 3 contacts → | ||||
Exact match “Our focus is on designing simple sustainable buildings that respect their context.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 24 | 3 contacts → | ||||
Exact match “Aqualicense is an environmental and licensing consultancy specialising in land and marine development.” Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase | |||||
| 25 | 3 contacts → | ||||
Exact match “We at Geraghty Energy Consultants Ltd.” Recorded in the RevenueBase company graph · Sep 22, 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 “sustainable development firms”. 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 86 sustainable development firms based in Ireland
See the full list, filter by size, metro and specialty, and access 335 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Sustainable development firms based in Ireland at a glance
As of Sep 22, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 86 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with Ireland whose business descriptions match “sustainable development firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 335 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 22, 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.
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 “sustainable development firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many sustainable development firms are there based in Ireland?
RevenueBase identified 86 company matches for sustainable development firms associated with Ireland 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?
Landell Mills tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most sustainable development firms?
Dublin leads with 18 company records, followed by Cork (6) and Galway (3).
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 335 professional contacts with verified work emails tracked across these 86 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 22, 2026.
Ready to reach these companies? Verified emails and direct dials for all 86 sustainable development firms based in Ireland. Start with a free account, no credit card.
Download this list →Related lists
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- Sustainable development firms based in Campinas, Brazil
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- Sustainable development firms based in Fortaleza, Brazil
- Sustainable development firms based in Porto Alegre, Brazil
- Sustainable development firms based in Recife, Brazil
- Sustainable development firms based in Rio De Janeiro, Brazil
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Sustainable development firms based in Adelaide, Australia
- Sustainable development firms based in Brisbane, Australia
- Sustainable development firms based in Melbourne, Australia
- Sustainable development firms based in Perth, Australia
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Company intelligence · public preview
Top 25 sustainable development firms based in Ireland
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 86 matching company records for sustainable development firms based in Ireland, with 920 tracked contacts and 335 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 22, 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 sustainable development firms based in Ireland
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 |  Landell Millslandell-mills.comHQ: Blackrock, IrelandReported employees: 51-200 | Blackrock, Ireland | 51-200 | Exact match | 197 contacts → |
“Leading international development consultancy Providing communities, economies and environments with the means and opportunities to grow Founded in 1975, Landell Mills is a…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Fehily Timoney And Companyfehilytimoney.ieHQ: Cork, IrelandReported employees: 51-200 | Cork, Ireland | 51-200 | Exact match | 116 contacts → |
“Fehily Timoney and Company is a Irish civil and environmental, engineering, scientific and planning consultancy specialising in the areas of Sustainable Infrastructure, Planning…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Tandem Project Management LTDtandemprojectmanagement.comHQ: Blackrock, IrelandReported employees: 51-200 | Blackrock, Ireland | 51-200 | Exact match | 65 contacts → |
“Tandem is an engineering consultancy specialising in project management, multi-disciplined engineering design, construction management, energy & carbon reduction, EHS and talent…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  20fifty Partners20fiftypartners.comHQ: Limerick, IrelandReported employees: 51-200 | Limerick, Ireland | 51-200 | Exact match | 48 contacts → |
“Developing a workforce ready to meet today’s sustainability needs has never been more important.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Climeactionclimeaction.comHQ: Cork, IrelandReported employees: 11-50 | Cork, Ireland | 11-50 | Exact match | 42 contacts → |
“Climeaction Cork & Boston | B Corp Certified | ISO 9001 & Accredited Climeaction is an industrial decarbonisation and carbon intelligence company.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: Dublin, IrelandReported employees: 51-200 | Dublin, Ireland | 51-200 | Exact match | 31 contacts → |
“Established in 1989 by the economic development agencies of Ireland, International Development Ireland (IDI) is an Irish-based organisation specialising in providing a wide range…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Enviroguide A DNV Companyenviroguide.ieHQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 22 contacts → |
“Enviroguide Consulting has an established reputation for delivering environmental and sustainability consultancy services including ecology, environmental impact assessment…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  KSN Horizonksnhorizon.comHQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 21 contacts → |
“Climate change, ESG requirements and the transition to a low-carbon economy are reshaping the future of real estate.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Plan Energyplanenergy.comHQ: Sligo, IrelandReported employees: 11-50 | Sligo, Ireland | 11-50 | Exact match | 18 contacts → |
“Welcome to Plan Energy, your trusted partner in decarbonisation and renewable energy.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Passive Dynamicspassivedynamics.ieHQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 15 contacts → |
“Passive Dynamics was set up in 2020 with a vision that expert knowledge and passion can empower.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Sustainabilityworks Irelandsustainabilityworks.ieHQ: Dublin, IrelandReported employees: 1-10 | Dublin, Ireland | 1-10 | Exact match | 14 contacts → |
“SustainabilityWorks is a consultancy on a mission to accelerate climate action and sustainability in Ireland.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Lp3lp3.ieHQ: Galway, IrelandReported employees: 11-50 | Galway, Ireland | 11-50 | Exact match | 13 contacts → |
“LP3 is an experienced and dynamic company providing specialist and dedicated services to the Renewable Energy sector across Ireland.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Meehan Green, A KEO Companymeehangreen.ieHQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 11 contacts → |
“Meehan Green is a company based in Dublin, Ireland that provides sustainability and green building certifications consulting services.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Crocon Engineers LTDcrocon.ieHQ: Bantry, IrelandReported employees: 1-10 | Bantry, Ireland | 1-10 | Exact match | 11 contacts → |
“Crocon Engineers Ltd, can provide advice, across a wide-ranging spectrum of projects in which your business may be involved, now or in the future.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Veri Connectvericonnect.ieHQ: Kilkenny, IrelandReported employees: 11-50 | Kilkenny, Ireland | 11-50 | Exact match | 11 contacts → |
“Veri Connect empowers your organisation to deliver measurable sustainability outcomes.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Danu Energy Consulting LTDdanuenergy.ieHQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 10 contacts → |
“Danu Energy Consulting provides project management and engineering services to assist in the development, construction and trading of renewable energy and wider sustainability…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: Thurles, IrelandReported employees: 501-1,000 | Thurles, Ireland | 501-1,000 | Exact match | 9 contacts → |
“Sustainable Development Research Institute (SDRI) will build on the extensive foundation of applied research within the TUS Thurles campus to create a Nationally and…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Visiongreen Consultancyvisiongreenconsultancy.euHQ: Carlow, IrelandReported employees: 1-10 | Carlow, Ireland | 1-10 | Exact match | 8 contacts → |
“At VisionGreen we are dedicated to making sustainability accessible to businesses of all sizes.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  BFA Consultingbfaconsulting.ieHQ: Bray, IrelandReported employees: 1-10 | Bray, Ireland | 1-10 | Exact match | 8 contacts → |
“At BFA Consulting, we are passionate about sustainability.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Codex Energy Consultants LTDcodexenergy.ieHQ: Ballycoolin, IrelandReported employees: 1-10 | Ballycoolin, Ireland | 1-10 | Exact match | 6 contacts → |
“Codex Energy Consultants Ltd is a company of specialist engineering and energy consultants.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Toward Zero Carbon TZCtzc.ieHQ: Castlecomer, IrelandReported employees: 1-10 | Castlecomer, Ireland | 1-10 | Exact match | 4 contacts → |
“Toward Zero Carbon Ltd is unique in the energy services sector because it combines a broad range of skills and disciplines, which are required to deal with the technical…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Scott Group Smart Buildingsscottgroup.ieHQ: Raheny, IrelandReported employees: 11-50 | Raheny, Ireland | 11-50 | Exact match | 3 contacts → |
“Specialties- Development & implementation of renewable energy & energy efficiency projects • Strategy development & investment planning • Energy savings planning & retrofits •…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Hussey Architectshusseyarchitects.com HQ: Dublin 4, IrelandReported employees: 1-10 | Dublin 4, Ireland | 1-10 | Exact match | 3 contacts → |
“Our focus is on designing simple sustainable buildings that respect their context.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Aqualicenseaqualicense.comHQ: Arklow, IrelandReported employees: 1-10 | Arklow, Ireland | 1-10 | Exact match | 3 contacts → |
“Aqualicense is an environmental and licensing consultancy specialising in land and marine development.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Geraghty Energy Consultants LTDgeraghtyec.ieHQ: Dublin 7, IrelandReported employees: 1-10 | Dublin 7, Ireland | 1-10 | Exact match | 3 contacts → |
“We at Geraghty Energy Consultants Ltd.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 86 company matches
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Sustainable development firms: dataset insights
September 22, 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
86 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 86 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 22, 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 ↗
Questions about this company list
What does Exact match mean for sustainable development firms?
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 sustainable development firms did RevenueBase find based in Ireland?
The saved snapshot records 86 matching company records, 920 tracked contacts and 335 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 22, 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
Sustainable development firms by geography
- Sustainable development firms based in Adelaide, Australia
- Sustainable development firms based in Brisbane, Australia
- Sustainable development firms based in Melbourne, Australia
- Sustainable development firms based in Perth, Australia
- Sustainable development firms based in Sydney, Australia
- Sustainable development firms based in Belo Horizonte, Brazil
- Sustainable development firms based in Campinas, Brazil
- Sustainable development firms based in Curitiba, Brazil
- Sustainable development firms based in Fortaleza, Brazil
- Sustainable development firms based in Porto Alegre, Brazil
- Sustainable development firms based in Recife, Brazil
- Sustainable development firms based in Rio De Janeiro, Brazil
Cite this list
RevenueBase Data Team. Top 25 sustainable development firms based in Ireland. Snapshot: September 22, 2026. https://revenuebase.ai/companies/sustainable-development-firms/ireland.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Sustainable development firms based in Adelaide, Australia
- Sustainable development firms based in Brisbane, Australia
- Sustainable development firms based in Melbourne, Australia
- Sustainable development firms based in Perth, Australia
- Sustainable development firms based in Sydney, Australia
- Sustainable development firms based in Belo Horizonte, Brazil
Company intelligence · public preview
Top 25 sustainable development firms based in Ireland
RevenueBase records 86 matching company records for sustainable development firms based in Ireland, with 920 tracked contacts and 335 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 22, 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 sustainable development firms based in Ireland
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 | Landell Millslandell-mills.com HQ: Blackrock, IrelandReported employees: 51-200 | Blackrock, Ireland | 51-200 | Exact match | 197 contacts → |
“Leading international development consultancy Providing communities, economies and environments with the means and opportunities to grow Founded in 1975, Landell Mills is a…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Fehily Timoney And Companyfehilytimoney.ie HQ: Cork, IrelandReported employees: 51-200 | Cork, Ireland | 51-200 | Exact match | 116 contacts → |
“Fehily Timoney and Company is a Irish civil and environmental, engineering, scientific and planning consultancy specialising in the areas of Sustainable Infrastructure, Planning…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Tandem Project Management LTDtandemprojectmanagement.com HQ: Blackrock, IrelandReported employees: 51-200 | Blackrock, Ireland | 51-200 | Exact match | 65 contacts → |
“Tandem is an engineering consultancy specialising in project management, multi-disciplined engineering design, construction management, energy & carbon reduction, EHS and talent…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 20fifty Partners20fiftypartners.com HQ: Limerick, IrelandReported employees: 51-200 | Limerick, Ireland | 51-200 | Exact match | 48 contacts → |
“Developing a workforce ready to meet today’s sustainability needs has never been more important.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Climeactionclimeaction.com HQ: Cork, IrelandReported employees: 11-50 | Cork, Ireland | 11-50 | Exact match | 42 contacts → |
“Climeaction Cork & Boston | B Corp Certified | ISO 9001 & Accredited Climeaction is an industrial decarbonisation and carbon intelligence company.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: Dublin, IrelandReported employees: 51-200 | Dublin, Ireland | 51-200 | Exact match | 31 contacts → |
“Established in 1989 by the economic development agencies of Ireland, International Development Ireland (IDI) is an Irish-based organisation specialising in providing a wide range…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Enviroguide A DNV Companyenviroguide.ie HQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 22 contacts → |
“Enviroguide Consulting has an established reputation for delivering environmental and sustainability consultancy services including ecology, environmental impact assessment…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | KSN Horizonksnhorizon.com HQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 21 contacts → |
“Climate change, ESG requirements and the transition to a low-carbon economy are reshaping the future of real estate.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Plan Energyplanenergy.com HQ: Sligo, IrelandReported employees: 11-50 | Sligo, Ireland | 11-50 | Exact match | 18 contacts → |
“Welcome to Plan Energy, your trusted partner in decarbonisation and renewable energy.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Passive Dynamicspassivedynamics.ie HQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 15 contacts → |
“Passive Dynamics was set up in 2020 with a vision that expert knowledge and passion can empower.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Sustainabilityworks Irelandsustainabilityworks.ie HQ: Dublin, IrelandReported employees: 1-10 | Dublin, Ireland | 1-10 | Exact match | 14 contacts → |
“SustainabilityWorks is a consultancy on a mission to accelerate climate action and sustainability in Ireland.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Lp3lp3.ie HQ: Galway, IrelandReported employees: 11-50 | Galway, Ireland | 11-50 | Exact match | 13 contacts → |
“LP3 is an experienced and dynamic company providing specialist and dedicated services to the Renewable Energy sector across Ireland.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Meehan Green, A KEO Companymeehangreen.ie HQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 11 contacts → |
“Meehan Green is a company based in Dublin, Ireland that provides sustainability and green building certifications consulting services.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Crocon Engineers LTDcrocon.ie HQ: Bantry, IrelandReported employees: 1-10 | Bantry, Ireland | 1-10 | Exact match | 11 contacts → |
“Crocon Engineers Ltd, can provide advice, across a wide-ranging spectrum of projects in which your business may be involved, now or in the future.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Veri Connectvericonnect.ie HQ: Kilkenny, IrelandReported employees: 11-50 | Kilkenny, Ireland | 11-50 | Exact match | 11 contacts → |
“Veri Connect empowers your organisation to deliver measurable sustainability outcomes.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Danu Energy Consulting LTDdanuenergy.ie HQ: Dublin, IrelandReported employees: 11-50 | Dublin, Ireland | 11-50 | Exact match | 10 contacts → |
“Danu Energy Consulting provides project management and engineering services to assist in the development, construction and trading of renewable energy and wider sustainability…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: Thurles, IrelandReported employees: 501-1,000 | Thurles, Ireland | 501-1,000 | Exact match | 9 contacts → |
“Sustainable Development Research Institute (SDRI) will build on the extensive foundation of applied research within the TUS Thurles campus to create a Nationally and…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Visiongreen Consultancyvisiongreenconsultancy.eu HQ: Carlow, IrelandReported employees: 1-10 | Carlow, Ireland | 1-10 | Exact match | 8 contacts → |
“At VisionGreen we are dedicated to making sustainability accessible to businesses of all sizes.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | BFA Consultingbfaconsulting.ie HQ: Bray, IrelandReported employees: 1-10 | Bray, Ireland | 1-10 | Exact match | 8 contacts → |
“At BFA Consulting, we are passionate about sustainability.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Codex Energy Consultants LTDcodexenergy.ie HQ: Ballycoolin, IrelandReported employees: 1-10 | Ballycoolin, Ireland | 1-10 | Exact match | 6 contacts → |
“Codex Energy Consultants Ltd is a company of specialist engineering and energy consultants.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Toward Zero Carbon TZCtzc.ie HQ: Castlecomer, IrelandReported employees: 1-10 | Castlecomer, Ireland | 1-10 | Exact match | 4 contacts → |
“Toward Zero Carbon Ltd is unique in the energy services sector because it combines a broad range of skills and disciplines, which are required to deal with the technical…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Scott Group Smart Buildingsscottgroup.ie HQ: Raheny, IrelandReported employees: 11-50 | Raheny, Ireland | 11-50 | Exact match | 3 contacts → |
“Specialties- Development & implementation of renewable energy & energy efficiency projects • Strategy development & investment planning • Energy savings planning & retrofits •…” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Hussey Architectshusseyarchitects.com HQ: Dublin 4, IrelandReported employees: 1-10 | Dublin 4, Ireland | 1-10 | Exact match | 3 contacts → |
“Our focus is on designing simple sustainable buildings that respect their context.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Aqualicenseaqualicense.com HQ: Arklow, IrelandReported employees: 1-10 | Arklow, Ireland | 1-10 | Exact match | 3 contacts → |
“Aqualicense is an environmental and licensing consultancy specialising in land and marine development.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Geraghty Energy Consultants LTDgeraghtyec.ie HQ: Dublin 7, IrelandReported employees: 1-10 | Dublin 7, Ireland | 1-10 | Exact match | 3 contacts → |
“We at Geraghty Energy Consultants Ltd.” Recorded description excerpt · September 22, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 86 company matches
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Sustainable development firms: dataset insights
September 22, 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
86 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 86 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 22, 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 ↗
Questions about this company list
What does Exact match mean for sustainable development firms?
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 sustainable development firms did RevenueBase find based in Ireland?
The saved snapshot records 86 matching company records, 920 tracked contacts and 335 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 22, 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 sustainable development firms based in Ireland. Snapshot: September 22, 2026. https://revenuebase.ai/companies/sustainable-development-firms/ireland.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Sustainable development firms based in Adelaide, Australia
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- Sustainable development firms based in Melbourne, Australia
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