Summary
- A roughly €750m continuation vehicle led by Exponent values H&MV Engineering at €1.4bn.
- H&MV reports a €2bn order book, €16bn pipeline, and more than 24GW of projects in design or construction.
- The funding will support recruitment, engineering investment, acquisitions, and further international expansion as critical-power demand rises.
H&MV Engineering has been valued at €1.4 billion through a new investment transaction that gives the Irish high-voltage engineering business additional capital to expand as data centres, batteries, renewables, and grid projects compete for specialist electrical delivery capacity.
The transaction establishes an approximately €750 million continuation vehicle led by existing investor Exponent, with Apollo S3, Pantheon, and SQ Capital joining as investors. Completion remains subject to regulatory approval and is expected in September.
H&MV says it now has a €2 billion order book and a €16 billion project pipeline, with more than 24GW of infrastructure in design or construction. Revenue has risen from €61 million in 2020 to an expected €1 billion in its 2026 financial year, while employee numbers have increased from around 300 to more than 1,900.
The company intends to use its longer-term capital backing for international recruitment, engineering capabilities, acquisitions, and expansion in the United States. It is targeting €3 billion in annual revenue within five years and a workforce of around 3,000.
Power engineering becomes scarce strategic capacity
H&MV’s valuation is closely tied to the physical bottlenecks behind the current data centre construction cycle. Developers can acquire land and announce large IT loads quickly, but connecting those sites requires substations, switchgear, protection systems, transmission works, energisation expertise, testing, and experienced engineers.
That delivery chain has become increasingly valuable as data centre projects grow from tens of megawatts towards campuses measured in hundreds of megawatts. Battery storage and renewable projects are drawing on much of the same high-voltage engineering base, while utilities are simultaneously expanding and reinforcing networks.
The result is that contractor capacity can become a project constraint in its own right. Specialist engineering businesses carry relationships with utilities, knowledge of local grid codes, experienced commissioning teams, and the ability to coordinate high-voltage work safely around complex construction programmes.
H&MV operates from 20 international offices across Ireland, the UK, continental Europe, the US, and Asia. Its customer base spans hyperscale technology companies, colocation providers, utilities, battery developers, and renewable-energy projects, giving it exposure to several infrastructure markets that are expanding at the same time.
The transaction also illustrates where private capital sees value inside the data centre supply chain. Investment has traditionally concentrated on operators, powered land, and finished facilities, but businesses controlling scarce engineering, electrical, cooling, and construction capability can participate in the same growth without owning the underlying data centre real estate.
A €16bn pipeline still has to convert
H&MV’s reported pipeline is substantially larger than its current order book. That distinction is important: prospective projects do not automatically become contracted revenue, particularly when data centre schemes face delays around planning, power allocations, financing, and customer commitments.
The €2 billion order book provides greater visibility, while the €16 billion pipeline indicates the scale of work the company believes is available across its markets. How quickly that opportunity converts will depend partly on the same infrastructure constraints H&MV is being hired to solve.
Exponent first invested in the business in 2022. The new continuation vehicle allows that relationship to extend while bringing additional institutional investors into the capital structure, rather than forcing an immediate sale to a new owner.
For H&MV, that provides funding at a point when expansion itself requires capital. Opening offices, recruiting experienced engineers, acquiring businesses, and carrying multiple major projects all increase working-capital and management requirements well before final customer payments are received.
The planned US headquarters in Dallas shows where part of the next growth phase is focused, but the European operation remains strategically important. Ireland, Britain, the Nordics, Germany, France, Spain, and other European markets are all dealing with large-load connection queues and the engineering work required to reinforce networks.
AI capacity may be increasing the size of individual projects, but the infrastructure needed to energise those campuses is still assembled through transformers, protection systems, switchgear, substations, cables, grid studies, commissioning, and skilled labour. H&MV’s €1.4 billion valuation puts a financial number on how valuable that delivery capability has become.
