The successor wireless generation to 5G, targeted at sub-millisecond latency and native sensing/positioning capability — early standards work is only just underway.
Private 5G industrial wireless backbones
Industrial IT / OT / Critical Control Information Infrastructure
Reality Check
Near-term · 2–5 yrs
Evidence E3 · First production use
Site-owned cellular networks that promise high-capacity, secure wireless coverage across plants, ports and mines. The technology works, but in the process industries deployments have grown more slowly than forecast, and most serve mobility and monitoring rather than control.
What a private network provides
A private 5G network is a cellular network dedicated to one site or organisation, with its own radio units, core network and SIM-based device identity, either owned outright or run by an operator as a managed service. Compared with Wi-Fi it offers wide-area coverage from fewer access points, managed handover as devices move, and stronger device authentication. Compared with a public network it offers local control of capacity, data that stays on site, and coverage designed around the plant rather than around consumers.
Spectrum makes this possible, and it varies by country. Germany, the United Kingdom and Japan, among others, offer local licences for industrial sites; the United States uses shared spectrum through CBRS; elsewhere access depends on mobile operators. That fragmentation affects which equipment and business models are available in each region.
The promise and the evidence
The 5G standards include features aimed at industrial control. 3GPP Release 16 first specified support for integrating 5G with Time-Sensitive Networking, so that a 5G system can appear to the TSN network as a virtual Ethernet bridge and act as a time-aware system for synchronisation; Release 17 added further enhancements 1. In principle that allows wireless control of moving machines and flexible production cells.
In practice, most published industrial deployments use private cellular for mobile workers, video, remote inspection, asset tracking and monitoring, and many are 4G LTE or mixed 4G/5G. Dow's private LTE network, built with Nokia and Kyndryl and started at its Freeport, Texas site, which has 40 production plants over more than 50 square kilometres, is an example of the connected-worker case in chemicals; Dow judged Wi-Fi too costly to extend across the site 3. Announcements in the process industries are often agreements or pilots rather than completed site-wide 5G networks.
Three announcements reported together in August 2025 illustrate the pattern 2. Numaligarh Refinery in India signed a memorandum of understanding with state operator BSNL for a captive network for AR/VR training, digital twins and IoT. Vodacom Business deployed a network at Sasol's Secunda site in South Africa, described as "4G/5G (TBC)", to connect about 3,000 workers and assets. The third, Nokia's project with Dutch rail operator ProRail, was a GSM-R railway core, a 2G-based system, reported under a private-5G heading.
| Use | Readiness | Comment |
|---|---|---|
| Connected workers, voice and video | Proven | Often LTE today, 5G as devices mature |
| Robots, drones and vehicles | Proven on suitable sites | Coverage and handover are the main benefits |
| Monitoring and asset tracking | Proven | Competes with Wi-Fi and low-power wireless |
| Wireless closed-loop control | Research and pilots | Features specified, little commercial equipment |
Why progress in process plants is slower
- Devices. The range of hazardous-area-certified 5G handsets, sensors and modems is small compared with Wi-Fi and WirelessHART.
- Features. Low-latency and TSN-integration features are in the standards but not widely available in commercial equipment and devices.
- Need. Much plant control traffic is fixed and already wired; the strongest wireless needs, from people and mobile equipment, can often be met by Wi-Fi at lower cost.
- Operation. A cellular core is an unfamiliar system for OT teams, and managed services raise the question of who controls a network the plant depends on.
Where it makes sense now
The case is strongest on large or outdoor sites where Wi-Fi coverage is hard to achieve, such as mines, ports, tank farms, pipelines and sprawling petrochemical complexes, and where mobility is the main need: connected workers, inspection robots, vehicles and video. For these sites a private network can become a long-lived utility, and starting on LTE with a path to 5G is a reasonable approach. Projects justified mainly by wireless closed-loop control should be treated as research.
Evidence timeline
- Jul 20203GPP freezes Release 16, the first release specifying 5G support for TSN. 4
- Nov 2022Dow's multi-site private LTE programme reported. 3
- Aug 20235G-ACIA white paper on integrating 5G with TSN for industrial communication. 1
- Aug 2025Refinery and chemical-site private network announcements in India and South Africa: an MoU and a 4G/5G deployment. 2
Why it sits at the Reality Check stage
We have moved private 5G from the Industry Acceptance stage to the Reality Check stage. The previous edition cited around 2,000 industrial deployments worldwide; we could not verify that figure, and counts of this kind typically mix 4G and 5G, pilots and production, and all industries. The evidence we can verify shows real but narrow use, and forecasts of rapid uptake in process plants have not materialised.
We keep a near-term horizon for the mobility and coverage uses, which we expect to mature first. Wireless control is a longer-term question.
Adoption signals to watch
- A wider range of hazardous-area-certified 5G devices and modems.
- Process-industry sites reporting completed site-wide 5G networks with measured results, not only agreements.
- Commercial equipment supporting 5G-TSN integration and industrial low-latency features.
Questions to ask before committing
- What will the network carry in its first three years, and could Wi-Fi do it more cheaply?
- Which spectrum option is available at this site, and on what terms?
- Are hazardous-area-certified devices available for the planned uses?
- Who operates the core network, and what happens to plant operations if the provider has an outage?
- How does the network fit into the site's OT security zones?
Terms used on this page
- Standalone
- A 5G network with its own 5G core, not dependent on a 4G network.
- URLLC
- Ultra-reliable low-latency communication, the 5G service class aimed at control applications.
- Local licence
- Spectrum licensed for use at a specific site, as offered by some national regulators.
Sources
- Integration of 5G with Time-Sensitive Networking for industrial communications
- Three more private 5G deployments
- From a standing start in Texas: the story of Dow Chemical's multi-site private LTE push
- 3GPP finalized Release 16 for 5G New Radio technology
Related technologies
See this entry on the full maturity map · All IT/OT & CCII entries · How placements are made. Stage and time-horizon placements are editorial judgements based on the public sources listed above, as of October 2026. They are not engineering, safety or investment advice; see the Terms of Use.