Ethos Engineering Hits 45 Data Centres, Eyes €30M [2026]
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Revenues are climbing fast at Ethos Engineering, the Dublin-based consultancy that has quietly become one of the most important names behind Ireland’s data centre construction boom. The company’s growth was flagged today as a trending story across Irish business media, with Business Post among the outlets tracking the story under the line “Revenues soar at Irish data centre designer Ethos.” The exact scale of the latest revenue jump has not yet been independently published in full, but the direction is clear: a mechanical and electrical engineering firm founded in a single Dublin office in 2005 is now central to how Ireland, and increasingly the wider EMEA region, builds the data centres that power cloud computing, AI workloads and enterprise IT.
For Ireland’s cloud computing sector, Ethos Engineering’s trajectory matters well beyond one company’s balance sheet. Every hyperscale facility, colocation campus or enterprise server hall needs mechanical and electrical design before a single rack goes in, and Ethos has positioned itself as one of the consultancies doing that work at scale. This article breaks down what is actually known about Ethos Engineering’s revenue growth, why it is happening now, and what it signals for data centre capacity, jobs and cloud infrastructure investment across Ireland.
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Ethos Engineering’s Revenue Surge: What We Know So Far
The headline driving today’s coverage, “Revenues soar at Irish data centre designer Ethos,” has circulated across several outlets, including Business Post, RTÉ, The Irish Times and Data Centre Magazine. What is confirmed is that Ethos Engineering, the Dublin-headquartered mechanical and electrical (M&E) consultancy, has built a business almost entirely around data centre design, project management and master-planning. The precise revenue figure behind today’s “soar” headline has not been independently verified in full detail at the time of writing, so readers should treat any specific updated figure with caution until the underlying financial report is published in full.
What is independently documented is the scale of Ethos Engineering’s ambition. The company previously announced plans to double its revenues to €30 million by 2025, alongside a commitment to create 150 new jobs in Ireland over four years, according to an announcement carried by Enterprise Ireland. A separate financial profile listed on Preqin recorded Ethos Engineering Ltd revenue of roughly US$18.57 million in 2021, giving a useful baseline against which any new growth figures can be measured. Revenue figures for 2022 through 2024 were not available in that profile, which is part of why today’s “soar” headline is generating so much interest: it potentially fills a multi-year gap in public financial data on one of Ireland’s busiest data centre engineering consultancies.
Who Is Ethos Engineering? Inside Ireland’s Data Centre Design Specialist
Ethos Engineering Ltd is an Irish mechanical and electrical engineering consultancy based in Dublin, founded in 2005. Over roughly two decades, the firm built a specialism that is relatively unusual among Irish engineering practices: dedicated expertise in data centre design, project management and master-planning. Rather than spreading across general construction engineering, Ethos concentrated on the specific mechanical and electrical demands of data halls, including cooling systems, power distribution, resilience design and the broader “smart building” infrastructure that hyperscale and colocation operators require.
That focus paid off as Ireland became one of Europe’s largest data centre hubs, driven by demand from cloud providers and, more recently, AI infrastructure buildouts. Ethos Engineering has positioned itself not just as a contractor executing someone else’s blueprint but as a design and master-planning partner involved from the earliest stages of a data centre project. Founder and CEO Greg Hayden has publicly framed this growth phase in ambitious terms, stating: “This major jobs creation and expansion drive comes at a time when demand for our services has never been higher,” in comments carried by Enterprise Ireland.
The Numbers: 45 Data Centres, 23 in Ireland, 1,451.2MW of Capacity
The clearest evidence of Ethos Engineering’s scale comes from its own project tally. According to the company’s announcement reported via Enterprise Ireland, Ethos has designed, delivered or provided master-planning services for 45 data centres in total, 23 of them located in Ireland. Taken together, those projects represent 1,451.2MW of data centre design capacity, a figure that places Ethos among the more active design consultancies operating in the Irish and EMEA data centre markets.
To put 1,451.2MW in context: that is a substantial share of design-stage capacity relative to Ireland’s total metered data centre electricity demand, which has become a politically sensitive topic as grid operators and planning authorities weigh further expansion against grid capacity constraints. The fact that roughly half of Ethos’s tracked data centre portfolio (23 of 45 projects) sits inside Ireland underscores how central the domestic market remains to the firm’s business, even as it pursues international EMEA growth.
| Metric | Figure | Source |
|---|---|---|
| Founded | 2005, Dublin | Preqin company profile |
| Total data centres designed/delivered/master-planned | 45 projects | Ethos / Enterprise Ireland announcement |
| Of which located in Ireland | 23 projects | Ethos / Enterprise Ireland announcement |
| Total design capacity represented | 1,451.2MW | Ethos / Enterprise Ireland announcement |
| Recorded revenue, 2021 | US$18,570,064 | Preqin company profile |
| Revenue target | €30 million by 2025 | Enterprise Ireland announcement |
| Jobs creation plan | 150 new Irish jobs over four years | Enterprise Ireland announcement |
The €30 Million Revenue Target and What It Signals
Ethos Engineering’s publicly stated goal was to double its revenues to €30 million by 2025, a target announced alongside its jobs creation plan. If the 2021 baseline of roughly US$18.57 million is used as a reference point, that target implies the company expected to roughly double its top line within a few years, a growth rate that tracks closely with the broader expansion of data centre construction activity across Ireland and the EMEA region over the same period.
It is worth being precise about what is confirmed versus what remains an open question. The €30 million figure is a target the company announced, not a confirmed outturn. Today’s “revenues soar” headline suggests that target, or something close to it, may now have been reached or exceeded, but a fully detailed, independently sourced updated revenue figure for Ethos Engineering has not been published in full at the time of writing. Readers and investors should treat the “soar” framing as directionally accurate while waiting for a complete financial breakdown before citing a specific updated euro figure.
150 New Jobs: Ethos’s Four-Year Hiring Plan
Alongside its revenue ambitions, Ethos Engineering announced plans to create 150 new jobs in Ireland over four years, part of what the company and Enterprise Ireland described as a “Going for Growth” expansion programme spanning both the domestic Irish market and the wider EMEA region. For a consultancy built around specialist engineering talent, that kind of hiring plan signals confidence that demand for data centre design work will keep climbing, not level off.
Hayden has described the growth plan in direct terms, telling Engineers Ireland in a recorded interview: “The whole five year plan was to double the size of the company.” He expanded on the people side of that plan, saying: “So the next five years is all about doubling the size company, bringing people on board, getting people being inclusive with innovation, everyone has to be part of it.” That framing suggests the jobs plan is not simply about adding headcount, but about building internal capacity to handle a growing pipeline of data centre design, project management and master-planning contracts, both in Ireland and across the EMEA markets Ethos has been expanding into.
Why Ireland’s Data Centre Boom Is Fuelling Engineering Firms Like Ethos
Ethos Engineering’s growth cannot be separated from the broader story of Ireland’s data centre sector, which has expanded rapidly as cloud providers, colocation operators and now AI infrastructure developers compete for capacity. That expansion has not been without friction. Grid capacity constraints, planning objections and local opposition to new builds have all featured in recent Irish data centre planning disputes, including the contested Ennis data centre project that went before Ireland’s Supreme Court earlier this year.
Despite those tensions, demand for new data centre capacity in Ireland has kept rising, driven by cloud computing growth and, increasingly, AI compute demand. Every one of those new facilities needs mechanical and electrical design work before construction, which is precisely the gap Ethos Engineering has filled. The firm’s growth is, in effect, a downstream indicator of how much capital continues to flow into Irish data centre infrastructure even as planning and grid debates intensify. Readers looking at broader cloud infrastructure cost trends in Ireland can also compare how major cloud providers price regional compute capacity, a topic covered in this site’s EKS vs GKE vs AKS Ireland cost comparison.
Historical Context: From a 2005 Dublin Startup to EMEA Player
Ethos Engineering’s growth did not happen overnight. The firm was founded in Dublin in 2005, well before Ireland’s current data centre construction wave began in earnest. Over roughly two decades, it built out a specialism in data centre mechanical and electrical design precisely as global cloud providers began selecting Ireland as a European hub, drawn by connectivity, tax policy and access to the EU single market.
That long build-up matters for understanding today’s growth numbers. A company that recorded roughly US$18.57 million in revenue in 2021 does not reach a stated €30 million target, or generate headline-grabbing “soaring” revenue, without years of accumulated project experience and client relationships behind it. Ethos’s 45-project portfolio, spanning 23 Irish data centres and 1,451.2MW of design capacity, reflects work carried out across multiple years and multiple data centre construction cycles, not a single lucky contract.
Market Impact: What Ethos’s Growth Means for Ireland’s Cloud and Data Centre Sector
For the wider cloud computing and data centre ecosystem in Ireland, a growing Ethos Engineering is a signal that design and engineering capacity, often a bottleneck in large infrastructure build-outs, is scaling to meet demand. Specialist M&E design firms are not interchangeable commodities; the engineering judgment involved in cooling, power resilience and master-planning for a hyperscale facility takes years to develop. A consultancy expanding its headcount by 150 people over four years, while pursuing international contracts, suggests the broader EMEA data centre pipeline remains active despite public debate over grid capacity and planning approvals.
That has knock-on implications for everything from construction employment to the pace at which new cloud and AI compute capacity can actually come online in Ireland. Design and engineering lead times are often underappreciated relative to construction timelines, but they are frequently the critical path for how quickly a data centre project can move from planning approval to live capacity. Firms like Ethos sit directly on that critical path, which is also why jobs announcements from Ireland’s tech-adjacent sector, including recent Dublin hiring news from OpenAI and Tines, tend to reinforce rather than compete with demand for data centre engineering talent.
Competitive Landscape: How Ethos Compares in Data Centre Engineering
Ireland’s data centre engineering and design market includes a mix of specialist Irish consultancies and larger international engineering firms that compete for mechanical, electrical and master-planning contracts. Ethos Engineering has carved out a position as one of the more data-centre-focused firms in that mix, rather than treating data centres as one vertical among many general construction clients. That specialisation appears to be a deliberate strategy, reinforced by Hayden’s own description of the firm’s positioning around “Innovation, Sustainability and Digital Transformation” and its ambition to be recognised as one of EMEA’s leading suppliers of data centre mechanical and electrical design consultancy.
Beyond organic growth, Ethos has also expanded through acquisition. According to Data Centre Solutions, the company grew its UK presence by acquiring technology design consultancy 3DEC, broadening its service offering beyond its original Irish base. That combination of organic revenue growth, a stated jobs creation plan and inorganic expansion through acquisition is a fairly classic playbook for a specialist engineering consultancy trying to scale across a fragmented, project-based market, where client relationships and proven delivery track records matter more than brand recognition alone.
Expert Perspective: Greg Hayden on Ethos’s Growth Strategy
Ethos Engineering’s founder and CEO, Greg Hayden, has been consistent in public comments about the scale of the firm’s ambition. Describing the company’s positioning, Hayden said Ethos wants “to build on our reputation as one of EMEA’s leading suppliers of Data Centre Mechanical and Electrical Design Consultancy, sustainable commercial and smart fit-out buildings while also leveraging our market leading expertise at the forefront of green and environmental design solutions across all sectors of the building industry,” in comments distributed through Enterprise Ireland.
Hayden has also credited state supports for helping the company scale internationally, saying: “Support from Enterprise Ireland for our vision has been invaluable.” That public acknowledgement of state agency support is notable, since Enterprise Ireland’s backing of a data centre engineering consultancy illustrates how Irish industrial policy has, directly or indirectly, supported firms positioned to serve the data centre construction sector, even as other parts of government grapple publicly with the grid and planning consequences of that same sector’s growth.
The Bigger Picture: Ireland’s Data Centre Capacity Under Pressure
Ethos Engineering’s growth is unfolding against a backdrop of genuine tension in Ireland’s data centre policy debate. Grid operator EirGrid has repeatedly flagged constraints on connecting new large energy users, and planning disputes over specific projects, including the Ennis data centre case that reached Ireland’s Supreme Court, show how contested new capacity has become. Yet design and engineering firms like Ethos continue to report rising demand, which suggests the pipeline of approved or in-planning projects remains substantial even where individual projects face delay or legal challenge.
That tension, between political and grid-level caution on one side and continued commercial investment on the other, is likely to define Ireland’s data centre sector for the next several years. Engineering consultancies sit in an interesting position within that dynamic: they benefit from the sheer volume of planned projects, but they are also increasingly asked to design for efficiency, sustainability and grid resilience as planning authorities impose tighter conditions on new approvals.
| Ethos Engineering milestone | Approximate timing |
|---|---|
| Company founded in Dublin | 2005 |
| Recorded annual revenue of ~US$18.57 million | 2021 |
| Jobs creation announcement (150 roles over four years) | Announced via Enterprise Ireland |
| Revenue doubling target of €30 million | Target year: 2025 |
| UK expansion via 3DEC acquisition | Reported by Data Centre Solutions |
| 45-project, 1,451.2MW portfolio disclosed | Company/Enterprise Ireland announcement |
| “Revenues soar” headline trends across Irish media | Reported today |
Risks and Headwinds Facing Ireland’s Data Centre Engineering Sector
No growth story in Ireland’s data centre sector is without risk, and Ethos Engineering’s position is no exception. Planning and legal challenges, like the one that sent the Ennis data centre project to the Supreme Court, can delay projects for years, pushing back the design and construction work that firms like Ethos depend on. Grid capacity constraints flagged repeatedly by EirGrid could also slow the rate at which new projects move from approval to construction, even if demand for data centre capacity itself keeps rising.
There is also a concentration risk inherent in building a consultancy so heavily around one sector. Data centre construction cycles can slow if cloud capital expenditure cools, if AI infrastructure investment plans are revised, or if policy shifts make it harder to secure grid connections for new facilities. Ethos’s strategy of expanding into the broader EMEA market and diversifying through acquisitions like 3DEC may partly offset that concentration, spreading the firm’s exposure across multiple national markets and regulatory environments rather than relying solely on Ireland’s data centre pipeline. Resilience is also becoming a design requirement in its own right: operators are increasingly weighing backup and disaster-recovery strategy, a trend covered in this site’s comparison of enterprise backup platforms, alongside the physical mechanical and electrical resilience that firms like Ethos design into a facility from day one.
What Comes Next: Predictions for Ethos and Ireland’s Data Centre Market
Based on what is currently known, several developments look likely over the coming months and years for Ethos Engineering and the broader Irish data centre engineering market:
- Expect Ethos Engineering to publish, or have reported on its behalf, a more detailed revenue breakdown that clarifies whether the €30 million target was met, exceeded or is still being approached, since today’s “soar” headline has raised that question without fully answering it.
- Expect continued hiring activity tied to the firm’s 150-job, four-year plan, particularly in specialist mechanical and electrical design roles tied to data centre and smart building projects.
- Expect further international expansion moves similar to the 3DEC acquisition, as Ethos looks to grow its EMEA footprint beyond Ireland and the UK.
- Expect continued friction between Ireland’s data centre construction pipeline and grid capacity or planning constraints, meaning firms like Ethos will likely keep designing for efficiency and sustainability as a competitive differentiator.
- Expect data centre design and engineering firms generally to remain in high demand across Ireland and EMEA as cloud and AI infrastructure investment continues, even if individual project timelines face delay.
Taken together, these signals point to a data centre engineering sector in Ireland that remains structurally busy, even as the political and grid-capacity debate around new facilities intensifies. Ethos Engineering’s growth, whatever the exact final revenue number turns out to be, is a useful proxy for just how much design and engineering work is still flowing through Ireland’s data centre construction pipeline.
Frequently Asked Questions
What is Ethos Engineering?
Ethos Engineering Ltd is a Dublin-based mechanical and electrical engineering consultancy, founded in 2005, that specialises in design, project management and master-planning services for data centres and other buildings.
How many data centres has Ethos Engineering designed?
According to the company’s own announcement via Enterprise Ireland, Ethos has designed, delivered or provided master-planning services for 45 data centres in total, including 23 located in Ireland, together representing 1,451.2MW of design capacity.
What revenue target has Ethos Engineering set?
Ethos announced a plan to double its revenues to €30 million by 2025. A separate third-party profile recorded the company’s 2021 revenue at approximately US$18.57 million, with figures for 2022 to 2024 not publicly disclosed in that profile.
How many jobs is Ethos Engineering planning to create?
The company announced plans to create 150 new jobs in Ireland over four years, as part of an expansion programme covering both the domestic Irish market and the wider EMEA region.
Where is Ethos Engineering based?
Ethos Engineering is headquartered in Dublin, Ireland, and has expanded its presence into the UK through the acquisition of technology design consultancy 3DEC.
What does Ethos Engineering actually do on a data centre project?
Ethos provides mechanical and electrical (M&E) design, project management and master-planning services, covering areas such as cooling systems, power distribution and resilience design for data centre and smart building clients.
Is Ethos Engineering only active in Ireland?
No. While Ireland remains central to its business, with 23 of its 45 tracked data centre projects located there, Ethos has also expanded into the UK and describes its ambitions in EMEA-wide terms, aiming to be recognised among the region’s leading data centre M&E design consultancies.
Has Ethos Engineering’s exact new revenue figure been confirmed?
Not in full detail at the time of writing. Irish media, including Business Post, reported today that revenues are “soaring” at Ethos, but a complete, independently verified updated revenue figure had not yet been published alongside that coverage.
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Darragh Flynn
Darragh Flynn is the Cloud & Software Reporter at TrendinTech, where he covers cloud infrastructure, enterprise platforms, software development and the digital transformation of Irish businesses. His reporting focuses on the gap between vendor roadmaps and the systems businesses actually run, and on what Ireland's role as a European cloud hub means for jobs, energy and regulation.
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