Company lists · Data refreshed September 2026

Top 25 Building energy optimization software companies based in Ireland

Name: Building energy optimization software companies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 52 companies tracked

RevenueBase identified 52 building energy optimization software companies headquartered in Ireland as of September 2026 and tracks 53,402 professional contacts across them, including 7,097 with verified work emails. Dublin is the largest hub.

This list covers building energy optimization software companies headquartered in Ireland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

52Companies

53,402Contacts tracked

7,097Verified emails

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The 25 largest building energy optimization software companies based in Ireland

Ranked by team size

Top 25 of 52 building energy optimization software companies based in Ireland, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to building energy optimization software companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Johnson Controls	Strong evidence	Cork, IrelandHQ checked Sep 27, 2026	10001+	52,736 contacts →
	Strong evidence “Johnson Controls is a global leader in thermal management, mission-critical building systems, energy efficiency and decarbonization.” Source: RevenueBase Database · checked Sep 27, 2026
2	SE Systems	Partial evidence	Cork, IrelandHQ checked Sep 27, 2026	51-200	59 contacts →
	Partial evidence “SE Systems (Sustainable Energy Systems) is Ireland's leading energy solutions provider.” Source: RevenueBase Database · checked Sep 27, 2026
3	Swyft Energy	Partial evidence	Bishopstown, IrelandHQ checked Sep 27, 2026	51-200	56 contacts →
	Partial evidence “Swyft Energy is an online platform that streamlines energy efficient upgrades for homeowner’s saving them time, hassle and money.” Source: RevenueBase Database · checked Sep 27, 2026
4	Resourcekraft Energy Management Solutions	Partial evidence	Limerick, IrelandHQ checked Sep 27, 2026	11-50	19 contacts →
	Partial evidence “ResourceKraft is a multinational Energy Management technology company, headquartered in Ireland with operations in across the US and Europe.” Source: RevenueBase Database · checked Sep 27, 2026
5	Symphony Energy	Partial evidence	Wicklow, IrelandHQ checked Sep 27, 2026	11-50	17 contacts →
	Partial evidence “Symphony Energy is a global leader in optimising energy performance in the commercial built environment.” Source: RevenueBase Database · checked Sep 27, 2026
6	Ultan Technologies	Strong evidence	Dublin 1, IrelandHQ checked Sep 27, 2026	11-50	16 contacts →
	Strong evidence “We are a company of software, process and energy experts that are passionate about helping our clients achieve efficiencies in their operations and in their electricity, gas and…” Source: RevenueBase Database · checked Sep 27, 2026
7	Frontline Energy	Partial evidence	Dublin 4, IrelandHQ checked Sep 27, 2026	11-50	15 contacts →
	Partial evidence “We are energy innovators and pride ourselves in delivering an end to end range of expertise for the built environment that saves energy, carbon, time and cost.” Source: RevenueBase Database · checked Sep 27, 2026
8	ICONS	Indirect evidence	Dublin, IrelandHQ checked Sep 27, 2026	11-50	13 contacts →
	Indirect evidence “Our working lives are constantly being transformed by new thinking and new technology.” Source: RevenueBase Database · checked Sep 27, 2026
9	BPC Engineers	Partial evidence	Dublin, IrelandHQ checked Sep 27, 2026	11-50	12 contacts →
	Partial evidence “Building Performance Consulting Engineers Ltd.” Source: RevenueBase Database · checked Sep 27, 2026
10	Acutrace	Strong evidence	Dublin D12 K7x9, IrelandHQ checked Sep 27, 2026	1-10	12 contacts →
	Strong evidence “We are a Software and Systems Integration Company measuring Energy Consumption in Commercial and Industrial buildings while helping Businesses meet their CSR and Sustainability…” Source: RevenueBase Database · checked Sep 27, 2026
11	Cognition.World	Partial evidence	Dublin, IrelandHQ checked Sep 27, 2026	11-50	10 contacts →
	Partial evidence “Cognition.World's sustainability-tech platform allows businesses affordably track and report on all their sustainability-related activity, whilst optimising their energy, asset &…” Source: RevenueBase Database · checked Sep 27, 2026
12	WIA	Strong evidence	Dublin, IrelandHQ checked Sep 27, 2026	1-10	10 contacts →
	Strong evidence “Wia is the energy intelligence platform for the world's largest building portfolios.” Source: RevenueBase Database · checked Sep 27, 2026
13	Geaney Engineering Consultants	Strong evidence	Waterford, IrelandHQ checked Sep 27, 2026	11-50	9 contacts →
	Strong evidence “Geaney Engineering Consultants are a building services consultancy, and energy management firm offering comprehensive engineering services, project management services, carbon…” Source: RevenueBase Database · checked Sep 27, 2026
14	Reverve Energy	Partial evidence	Dun Laoghaire, IrelandHQ checked Sep 27, 2026	11-50	8 contacts →
	Partial evidence “Reverve Energy is an Energy-as-a-Service company.” Source: RevenueBase Database · checked Sep 27, 2026
15	Eclimai	Partial evidence	Dublin, IrelandHQ checked Sep 27, 2026	1-10	7 contacts →
	Partial evidence “At EclimAi, we are building the intelligence layer for commercial buildings.” Source: RevenueBase Database · checked Sep 27, 2026
16	Vivid Edge	Indirect evidence	Ucd Belfield Dublin 4, IrelandHQ checked Sep 27, 2026	1-10	6 contacts →
	Indirect evidence “At Vivid Edge, we're passionate about helping our customers save precious time and funds while cutting carbon.” Source: RevenueBase Database · checked Sep 27, 2026
17	Wattics	Partial evidence	Dublin, IrelandHQ checked Sep 27, 2026	51-200	5 contacts →
	Partial evidence “At Wattics, we strongly believe easy-to-use cloud-based energy analytics will improve global sustainability and make the world a better place.” Source: RevenueBase Database · checked Sep 27, 2026
18	Dcsix Technologies	Partial evidence	Cork, IrelandHQ checked Sep 27, 2026	1-10	5 contacts →
	Partial evidence “DCSix offer a range of energy monitoring and control solutions to a variety of markets.” Source: RevenueBase Database · checked Sep 27, 2026
19	Scott Group Smart Buildings	Partial evidence	Raheny, IrelandHQ checked Sep 27, 2026	11-50	3 contacts →
	Partial evidence “Specialties- Development & implementation of renewable energy & energy efficiency projects • Strategy development & investment planning • Energy savings planning & retrofits •…” Source: RevenueBase Database · checked Sep 27, 2026
20	Cardienergy	Strong evidence	Wicklow, IrelandHQ checked Sep 27, 2026	1-10	3 contacts →
	Strong evidence “Cardi Energy is a leading Energy Services Consultancy dedicated to revolutionising the energy landscape for commercial buildings.” Source: RevenueBase Database · checked Sep 27, 2026
21	Powertherm Solutions	Partial evidence	Blackrock, IrelandHQ checked Sep 27, 2026	1-10	3 contacts →
	Partial evidence “PowerTherm Solutions was founded in 2002 and has since established itself as one of Ireland’s leading energy consultancies and energy-related services companies.” Source: RevenueBase Database · checked Sep 27, 2026
22	Irish Commodities Tráchtearraí Éireanneacha	Partial evidence	Ennis, IrelandHQ checked Sep 27, 2026	1-10	3 contacts →
	Partial evidence “Irish Commodities provides solutions that help business energy users reduce energy spend and become carbon neutral.” Source: RevenueBase Database · checked Sep 27, 2026
23	ISO Baseline LTD	Partial evidence	Carrigaline, IrelandHQ checked Sep 27, 2026	1-10	3 contacts →
	Partial evidence “Energy Management for the 21st Century: Baseline has been developed for the energy manager that wants to focus their efforts towards energy management using a structured approach.” Source: RevenueBase Database · checked Sep 27, 2026
24	Century Retrofit LTD	Indirect evidence	Galway, IrelandHQ checked Sep 27, 2026	11-50	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
25	Systemcore	Indirect evidence	IrelandHQ checked Sep 27, 2026	11-50	2 contacts →
	Indirect evidence “Systems thinking is one of the core skillsets of the SystemCore team, We build a systems approach into all that we do.” Source: RevenueBase Database · checked Sep 27, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: building energy optimization software companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names building energy optimization software companies.
Partial evidence: Its own public description names part of building energy optimization software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name building energy optimization software companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 52 building energy optimization software companies based in Ireland

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Building energy optimization software companies based in Ireland at a glance

As of Sep 27, 2026

13.3%Verified-email coverage

1027.0Average contacts per company

11-50Median size (employees)

32.7%Largest-city concentration · Dublin

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

10001+

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 52 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among building energy optimization software companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Ireland whose own description of what they do matches “building energy optimization software companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names building energy optimization software companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among building energy optimization software companies, and records with no verified work email. Companies headquartered outside Ireland are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 7,097 across the full list. 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 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names building energy optimization software companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many building energy optimization software companies are there based in Ireland?

RevenueBase identified 52 building energy optimization software companies headquartered in Ireland as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Johnson Controls, headquartered in Milwaukee, tops this list with the largest team on record.

Which city has the most building energy optimization software companies?

Dublin leads with 17 headquartered companies, followed by Waterford (3) and Cork (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 7,097 verified decision-maker contacts tracked across these 52 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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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 Smart Search, 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.