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Markets EdgeMACALLAN 1926September 19, 20262 min readAd-free
Flex Pays $4.4B for EPC Power in Largest Data Center Infrastructure Play This Year
Singapore contract manufacturer moves upstream into liquid cooling and power conversion as hyperscale AI buildout reshapes the stack.
Markets Edge deskMarkets Edge · Huang GoodmanSource: Microsoft News ↗
In plain words
Flex's **$4.4B** EPC acquisition is a **5.5x** revenue bet that liquid cooling and power conversion are the new margin layer in AI infrastructure.
$4.4 billion
all-cash acquisition of EPC Power
$800 million
in trailing revenue with operating margins above
20%
according to sources familiar with the financials
40 kilowatts per rack
Its customer base includes three of the four largest…
Flex announced the $4.4 billion all-cash acquisition of EPC Power, a privately held power conversion and liquid cooling specialist based in Texas. The deal closes Flex's position in the hyperscale data center infrastructure layer where thermal management and power delivery have become the binding constraints on AI chip deployment. EPC Power generated roughly $800 million in trailing revenue with operating margins above 20%, according to sources familiar with the financials. Flex is paying approximately 5.5x revenue, a sharp premium to its own 0.4x multiple, reflecting the scarcity value of proven liquid cooling expertise.
EPC Power designs and manufactures high-density power conversion systems and rear-door heat exchangers used in GPU clusters running training workloads above 40 kilowatts per rack. Its customer base includes three of the four largest US hyperscalers and two Asia-Pacific sovereign cloud initiatives. Flex has been EPC's primary contract manufacturer since 2019, handling volume production while EPC held design and customer relationships. The acquisition collapses that structure, giving Flex direct control of intellectual property in power topology and thermal interface materials that currently have 9-to-14 month lead times industry-wide. Flex CEO Revathi Advaithi said the deal eliminates a margin layer and positions the combined entity to bid on full rack integration contracts starting in the second half of 2025.
The move signals a structural shift in how AI infrastructure gets capitalized. Hyperscalers are no longer buying servers—they are buying thermal envelopes with compute inside. Power and cooling now represent 35% to 45% of total rack cost for frontier model training clusters, up from 18% in traditional enterprise environments. Flex's historical business in manufacturing servers, storage, and networking gear for hyperscalers has seen margin compression below 6% as those categories commoditized. EPC's power conversion and liquid cooling products carry gross margins near 38%, according to investor presentations. The acquisition effectively re-rates Flex's hyperscale exposure from a low-margin assembly play to a margin-accretive infrastructure component supplier with multi-year visibility into GPU deployment roadmaps.
Operators should watch three follow-on developments. First, whether Flex can retain EPC's engineering team through the integration—power topology design is specialist work with high individual leverage and limited talent depth. Second, any announcements around long-term supply agreements with hyperscalers in Q2 or Q3 2025, which would validate the thesis that owning the full stack matters for contract wins. Third, competitive responses from Vertiv, Schneider Electric, and newer entrants like Motivair, all of whom are scrambling to add liquid cooling capacity and may pursue acquisitions of their own in the $500M to $1.5B range.
Flex financed the deal with cash and a new $3 billion term loan arranged by Goldman Sachs and JPMorgan. The company expects the acquisition to be accretive to earnings within 12 months, assuming no major delays in hyperscale capex deployment schedules.
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For the principal
$4.4B outlay signals infrastructure premiums widening—consider exposure to thermal management specialists before multiples compress further after copycat M&A.
For the operator
Track Flex's customer concentration disclosures in 10-Q filings—hyperscaler contract renewals post-close will confirm whether vertical integration thesis holds under procurement pressure.
For the house
Huang Goodman maintains long position in Vertiv and short synthetic position in legacy server ODMs—this validates our May thesis on margin migration.
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