Flex pays $4.4B for EPC Power, enters thermal infrastructure race
Singapore-based contract manufacturer consolidates power conversion capacity ahead of accelerated hyperscale buildouts.
SourceMSN ↗Edgar’s SEC Data profile {Actuarial Version}Flex Ltd. →
Flex Ltd. announced acquisition of EPC Power for $4.4 billion cash, combining 20 gigawatts of existing power conversion capacity with EPC's thermal management IP. The deal closes Q2 2025, subject to standard antitrust review in three jurisdictions.
EPC Power specializes in custom power conversion systems for hyperscale data centers, with installed base across 47 facilities in North America and EMEA. Revenue run-rate sits at $890 million, implying Flex paid roughly 4.9x trailing sales. The acquisition adds 1,200 engineers to Flex's existing 16,000-person workforce, concentrated in Phoenix and Bangalore design centers. EPC's backlog extends through Q4 2026, predominantly tied to liquid-cooled rack deployments exceeding 100 kilowatts per cabinet.
This marks Flex's largest acquisition since the $2.6 billion Multek purchase in 2018. The thesis centers on thermal density escalation: GPUs in training clusters now generate 700-1000 watts per chip, doubling eighteen months ago. Liquid cooling penetration in new hyperscale facilities jumped from 11% of racks in 2022 to 38% in Q4 2024, per Uptime Institute data. Flex previously relied on third-party power modules; vertical integration cuts 6-8 weeks from design-to-deployment cycles, material when hyperscalers face 18-month permitting timelines.
The move also fortifies Flex against margin compression in traditional contract manufacturing. Operating margin in its Cloud Solutions segment declined from 8.2% to 6.7% year-over-year as server economics tightened. EPC's custom engineering model carries 14-16% EBITDA margins, structurally higher due to switching costs once integrated into facility designs. Flex estimates $180 million in annual synergies by 2027, primarily procurement scale on copper busbars and semiconductor power stages.
Watch for follow-on M&A in the $500 million-$1.5 billion range targeting edge colocation thermal players within 90 days. Two private equity-backed competitors—Vertiv spinout assets and Delta Electronics' modular cooling unit—circulated teasers in December. Flex has $2.1 billion in undrawn credit facilities post-transaction. Hyperscaler capex guidance for 2025 sits at $210-$230 billion industry-wide, with power and cooling representing 22-26% of total facility spend, up from 18% in 2023.
EPC's Phoenix facility holds 40% of U.S. production capacity for >500kW power modules, a strategic chokepoint as NVIDIA's Blackwell racks require 120kW per GPU subsystem. Delivery lead times currently stretch 34 weeks; Flex plans $400 million capex to add parallel production lines operational Q1 2026.
The takeaway
Flex consolidates $4.4B of power conversion capacity as thermal density in AI infrastructure doubles every eighteen months.
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