Industrial control for process automation is quietly becoming the most contested battleground in global manufacturing. A newly published market study from The Business Research Company identifies closer integration between programmable logic controllers (PLC) and distributed control systems (DCS) as one of the defining forces reshaping demand — and the timing matters. Plants running ageing proprietary control architectures now face a converging squeeze: rising energy costs, tighter safety mandates, thinner engineering talent pools, and an OT-IT convergence agenda that will not wait.
According to the study, the industrial control for process automation market is projected to reach $62.86 billion by 2030, growing at a compound annual growth rate of 8.4%. The headline is not the growth rate itself, but where that revenue is being redirected: away from isolated hardware stacks and toward integrated control environments that span the field device all the way to the enterprise resource planning layer.
Analyst Insight: The PLC-versus-DCS debate is effectively over. Buyers are no longer choosing a side — they are choosing architectures that blur the boundary. Vendors that cannot deliver open, Ethernet-native interoperability will lose share to those that can, regardless of installed-base loyalty.
PLC-DCS Integration Becomes the Backbone of Process Automation
Historically, DCS dominated continuous process plants such as refineries, chemical works, and power generation, while PLCs ruled discrete and hybrid manufacturing. That partition is eroding fast. Modern PLCs carry enough scan-speed, redundancy, and safety-instrumented capability to take on duties once reserved for DCS cabinets.
The numbers confirm the shift. In the industrial control for process automation market, programmable logic controllers held 31.58% of market share in 2025, according to Mordor Intelligence, while manufacturing execution systems are forecast to expand at a 10.04% CAGR through 2031 — the clearest signal that value is migrating toward the software layer that sits above the controller.
Hardware still captured 46.35% of revenue in 2025, but software is advancing at a 9.37% CAGR. Control logic is steadily leaving proprietary racks and reappearing as microservices.
Market Data Snapshot: Industrial Control for Process Automation
| Metric |
Figure |
Source |
| Market size (2030 forecast) |
$62.86 billion |
The Business Research Company |
| CAGR (forecast period) |
8.4% |
The Business Research Company |
| Market size (2026) |
$81.89 billion |
Mordor Intelligence |
| Market size (2031) |
$115.72 billion |
Mordor Intelligence |
| PLC share by system (2025) |
31.58% |
Mordor Intelligence |
| MES CAGR to 2031 |
10.04% |
Mordor Intelligence |
| Hardware share of revenue (2025) |
46.35% |
Mordor Intelligence |
| System integration & deployment share of services (2025) |
37.46% |
Mordor Intelligence |
| Largest end-user vertical (2025) |
Oil & gas, 25.62% |
Mordor Intelligence |
| Fastest-growing vertical to 2031 |
Life sciences, 10.96% CAGR |
Mordor Intelligence |
Note: Definitions and segmentation methodologies vary between research houses; the figures above are not directly comparable and should be read as directional indicators.
Real-Time Monitoring and MES-ERP Convergence
The second axis of change is visibility. The study highlights expanded use of real-time process monitoring and the development of integrated control platforms that link manufacturing execution systems (MES) directly with enterprise resource planning (ERP) environments.
The scale of that software layer is significant. MarketsandMarkets estimates the global manufacturing execution systems market will grow from $15.95 billion in 2025 to $25.78 billion by 2030, a 10.1% CAGR. Once a plant floor orchestrator is feeding live yield, energy, and quality data into ERP planning cycles, the controller stops being a black box and becomes a data source.
The OT-IT Bridge Nobody Can Postpone
Industrial control systems already account for roughly 48.20% of total industrial automation revenue, per Market Research Future, sustained largely by replacement cycles in oil and gas, power generation, and water treatment. Critically, the migration from proprietary fieldbus protocols to OPC UA over Ethernet is triggering full-system upgrades rather than piecemeal component swaps.
That has a direct commercial consequence: consulting services are now the fastest-growing service line at a 9.68% CAGR, as operators commission cybersecurity assessments against IEC 62443 and NERC CIP frameworks, alongside OT-IT segmentation roadmaps.
Market Trend: Interoperability gaps remain the single largest source of project overrun. Research from the Technical University of Denmark cited in market analysis suggests interoperability challenges extend comprehensive automation project timelines by roughly 40% on average. Pre-engineered libraries and digital twins are the industry's structural answer — and the reason custom engineering hours are being squeezed.
Safety and Reliability Move to the Front of the Brief
The study also flags heightened attention to operational safety and reliability. This is not rhetorical. When a single PLC now influences continuous production across a unit, functional safety certification, deterministic cycle times, and redundant architecture become procurement conditions rather than premium options.
Safety instrumented systems are increasingly specified alongside — not beneath — the primary control layer, and asset owners are demanding documented mean time between failures evidence from vendors before award.
Ethernet-APL and the New Field Connectivity Race
Field-level connectivity is where integration strategies are won or lost. Ethernet-APL, the two-wire Ethernet physical layer designed for hazardous areas, allows instrumentation to deliver dense diagnostics and high-speed data movement directly into DCS and plant asset-management layers.
In a representative 2026 award, ABB secured an order from Zhejiang Petroleum & Chemical to supply electromagnetic flowmeters with Ethernet-APL for a major refining complex in Zhoushan, China — evidence that large petrochemical sites are treating Ethernet-based field connectivity as a practical upgrade path, not a laboratory curiosity.
The Competitive Landscape
The industrial control for process automation market remains moderately concentrated. Major participants identified across the leading market reports include Siemens AG, ABB Ltd., Schneider Electric SE, Honeywell International Inc., Emerson Electric Co., Rockwell Automation Inc., Mitsubishi Electric Corporation, Yokogawa Electric Corporation, Omron Corporation, General Electric Company, Fuji Electric Co. Ltd., Hitachi Ltd., Toshiba Corporation, Bosch Rexroth AG, B&R Industrial Automation GmbH, Endress+Hauser Group, Aspen Technology Inc., Fanuc Corporation, and Keyence.
Asia Pacific is identified by multiple research houses as both the largest and fastest-growing regional market, reflecting the density of greenfield refining, chemicals, and semiconductor-related process capacity in the region.
What This Means for Plant Operators and Integrators
Practical Implications for Procurement and Engineering Teams
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Design for hybrid control. Assume PLC and DCS functions will coexist on the same unit. Specify open protocols first, controller brands second.
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Budget the integration layer, not just the hardware. System integration and deployment accounted for 37.46% of service revenue in 2025 — treat engineering hours as a first-class cost line.
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Plan the data path early. If MES is growing at double-digit rates, the controller must expose structured, time-stamped data natively.
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Verify spares and lifecycle support. Legacy platforms still running critical loops need documented spare-part continuity and migration windows.
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Embed cybersecurity in scope. IEC 62443 alignment is increasingly a contractual requirement in process industries, not a post-project add-on.
Bottom Line: The study's central finding is structural, not cyclical. Industrial control for process automation is transitioning from a hardware replacement business into an integration and data business. Operators who treat the controller as a long-lived data node rather than a closed cabinet will capture the efficiency gains. Those who do not will pay for them twice — once in engineering hours, and again in unplanned downtime.
Frequently Asked Questions
Why is PLC and DCS integration accelerating now?
Three forces converge: modern PLCs now meet the speed, redundancy, and safety requirements of continuous process duty; the shift to OPC UA over Ethernet removes the protocol barrier that historically kept the two architectures apart; and OT-IT convergence demands a single, coherent data path from field device to ERP.
Does PLC-DCS integration mean replacing distributed control systems?
Rarely. The dominant pattern is coexistence and functional migration — discrete or hybrid sub-systems move to PLC control while the DCS retains plant-wide coordination. The integration layer, not the controller form factor, decides project outcomes.
How fast is the industrial control for process automation market growing?
The Business Research Company projects the market reaching $62.86 billion by 2030 at an 8.4% CAGR. Independent estimates differ materially depending on segmentation definitions, with Mordor Intelligence sizing the market at $81.89 billion in 2026 growing to $115.72 billion by 2031 at a 7.15% CAGR.
Which industries are driving the strongest demand?
Oil and gas retained the largest end-user share in 2025 at 25.62%, while life sciences is forecast to be the fastest-growing vertical at 10.96% CAGR to 2031. Water treatment, power generation, and chemicals remain core replacement-cycle markets.
What role does cybersecurity play in modern process control?
An increasingly central one. Consulting services — much of it focused on cybersecurity assessments against IEC 62443 and NERC CIP frameworks — are the fastest-growing service category at 9.68% CAGR, as operators segment OT networks and harden legacy control assets.
For operators and system integrators, the takeaway from the latest market study is unambiguous: the value in industrial control for process automation is shifting from the controller cabinet to the architecture that connects it. PLC technology remains central to that evolution — but only where it is specified as an open, integrated, and rigorously secured component of a larger control environment.
