NavonLogic Blog
Optimizing OT Network Grounding for Industrial Control Systems
Section 1 — Introduction
In the modern era of industrial automation, OT network grounding solutions have become a foundational concern for facility managers, plant engineers, and EPC contractors alike. As Operational Technology (OT) networks—comprising PLCs, HMIs, industrial Ethernet, and SCADA systems—have become ever more integral to process uptime and safety, their physical and electrical infrastructure can no longer be treated as an afterthought. A single grounding lapse can lead not only to costly equipment failures and downtime but also to severe safety incidents and even catastrophic asset losses. Ensuring robust and compliant OT network grounding solutions is thus not just a technical checkbox—it’s a strategic business necessity for industrial facilities looking to maintain reliability, safety, and regulatory compliance.
Historically, grounding in industrial environments was treated primarily as a power safety measure: to clear faults, prevent electrocution, and ensure reliable operation of heavy equipment. However, with the proliferation of sensitive digital instrumentation, networked control systems, and complex automation architectures, legacy grounding approaches are now frequently inadequate—or, worse, actively harmful. I’ve encountered countless facilities where “fixes” meant for one system inadvertently introduced noise, ground loops, or dangerous potential differences elsewhere. For example, tying shield grounds at both ends is a classic textbook error that creates circulating currents and devastates communications reliability. In one project, a single misplaced ground destroyed an entire DCS cabinet, costing weeks of unplanned downtime and hundreds of thousands in lost production. Common scenarios leading to such failures include brownfield expansions, utility upgrades, and rushed equipment replacements—contexts where assumptions about the existing grounding system may no longer be valid.
This article provides a comprehensive, hands-on guide to understanding, designing, and implementing state-of-the-art OT network grounding solutions within industrial facilities. We’ll begin by unpacking the science and core terminology behind grounding. Then, we’ll dive deeply into engineering analysis and practical design, covering calculations, equipment selection, and conductor sizing. Next, we’ll explore real-world implementation challenges, materials, and best practices, followed by a thorough review of codes and standards, with a spotlight on IEEE 142-2007 and NFPA 70 Article 250. We’ll highlight the most common errors I’ve seen firsthand in the field—and, crucially, how to avoid them. Finally, I’ll outline how NavonLogic’s Electrical Safety and Grounding Review services deliver value at every project stage, helping clients avoid the pitfalls I’ve described. Whether you’re planning a new greenfield facility or troubleshooting recurring OT reliability woes, this article will equip you with the knowledge—and the practical perspective—to make better decisions, right now.
Section 2 — Background and Technical Fundamentals
Grounding, in the context of industrial facilities, refers to the deliberate connection of electrical systems and equipment to a common reference point—usually the earth—to ensure both personnel safety and equipment integrity. In the world of OT networks, effective grounding controls two primary hazards: the risk of electrical shock to personnel and the risk of equipment damage or malfunction due to transient voltages, static discharge, and conducted or radiated electromagnetic interference (EMI). While the basic concept is straightforward—establish a zero-voltage reference and a safe path for fault currents—the technical realities are complex, especially when multiple distributed control systems, remote I/O panels, and networked devices are tied together across large plants. Even voltage differences as low as a few volts can destroy sensitive electronics or interfere with high-speed communications. During a ground fault, however, currents commonly exceed hundreds or thousands of amps—underscoring the need for robust, low-impedance paths sized to safely handle such surges without creating hazardous step or touch potentials.
Key grounding terminology includes the grounding electrode system (GES), equipment grounding conductors (EGCs), signal reference grids (SRGs), and shield grounding. The GES typically comprises ground rods, plates, or grids bonded to building steel and the electrical service entrance, forming the fundamental zero-potential node for the facility. EGCs, sized per NEC Table 250.122, provide intentional low-resistance return paths for clearing faults via circuit breakers or fuses, often carrying currents upwards of 5,000A or more during system faults. SRGs or dedicated signal grounds, meanwhile, are increasingly used in OT network grounding solutions to mitigate high-frequency noise and ensure stable reference voltages for network communications. Shield grounding—proper termination of cable and device shields—is critical to prevent EMI from disrupting network signals, especially as data rates and cable runs increase. In my experience, misunderstanding the roles—and physical separations—between these different grounding paths is a root cause of many field failures.
Proper grounding performs three essential functions. First, it provides a reference voltage for electronic equipment, allowing signals to be interpreted unambiguously by PLCs, DCS controllers, and field devices. A reference that “floats” due to poor grounding can cause erratic operation, nuisance trips, and in some cases catastrophic logic errors resulting in process upsets or unsafe states. Second, grounding ensures that, in the event of insulation failure or accidental energization of enclosures, dangerous voltages are safely dissipated to earth, minimizing the risk of electrocution. According to IEEE 142-2007, even a temporary voltage of 50V can initiate ventricular fibrillation in humans if sustained, making robust step and touch potential control non-negotiable. Third, grounding—when designed and installed correctly—provides a sink for transient currents induced by lightning, switching surges, or electromagnetic interference. In an industrial setting, a lightning strike can induce voltages in excess of 100kV on external cabling; without proper surge paths, this energy will find its own route—often via sensitive OT equipment, with predictable and destructive results.
Fault scenarios drive home the necessity of robust grounding in industrial control system networks. Consider a 480V MCC with a ground fault: if the EGC is undersized or improperly terminated, the fault current may not be sufficient to trip upstream protection before dangerous voltages appear on accessible surfaces—or, worse, the current may find a parallel return path via network cabling, instrument shields, or building steel. In one real-world incident I witnessed, an improperly bonded VFD enclosure during a ground fault sent several hundred amps through a shielded Profibus cable, frying every node on the segment and causing a plant-wide control loss that took days to recover. Another frequent hazard is the formation of ground loops between remote OT panels: a mere 1V difference at 100mA is enough to cause serial communications errors, disrupt analog signals, and ultimately halt production lines. These are not theoretical risks; they’re the lived reality of industrial facilities that have not implemented proper OT network grounding solutions. The stakes are high, and the technical fundamentals should never be overlooked—even for the most routine of upgrades or expansions.
Section 3 — Engineering Analysis and System Design
Substation and Facility Grounding Electrode Design
Grounding begins at the facility’s service entrance or substation, where the first and most critical engineering task is to design an effective grounding electrode system (GES). The objective is to achieve a sufficiently low resistance—typically less than 5 ohms per IEEE 142-2007—for the system to safely dissipate both fault and transient currents. This is particularly crucial in substations or main switchgear rooms, which often serve as the primary zero-voltage reference point for both power and OT networks. The classic design equation for the resistance of a single ground rod is R = ρ/(2πL) * ln(4L/d), where ρ is the soil resistivity (in ohm-meters), L is rod length, and d is rod diameter. However, in industrial practice, a single rod is rarely sufficient due to high soil resistivity or mechanical/chemical constraints. A common mitigation is to install a perimeter ground grid—a mesh of bare copper conductors (typically #2/0 AWG or larger) buried at least 0.5 meters deep, supplemented by multiple rods and connections to building steel.
During design, a detailed soil resistivity survey (per IEEE Standard 81) is essential. For example, if ρ = 100 ohm-meters (a common value for rocky or urban soils), a single 10-foot (3m) rod has a resistance of about 30 ohms—far too high. To reach the 5-ohm target, parallel rods or a grid must be used, with careful attention to spacing (at least twice the rod length apart to avoid field overlap). In critical OT network environments, we often specify enhanced ground electrodes (such as copper-clad rods or chemical-enhanced rods) and exothermic welded connections for maximum reliability. The GES must also be robust against corrosion, mechanical damage, and construction errors—failure at this level propagates through the entire plant’s grounding scheme and puts every downstream network at risk.
The system also requires robust interconnection between the GES, service neutral, equipment grounds, and building steel, using mechanical lugs or exothermic welds per NEC 250.8. For instance, a 1200A main switchgear requires a minimum #3/0 AWG copper grounding electrode conductor per NEC Table 250.66. Every connection is a potential failure point: loose or corroded clamps, painted-over lugs, and improper torque values are all too common. For OT networks, a direct, low-impedance bond between the main GES and the signal reference grid is critical to avoid “floating ground” conditions that can devastate network communications and logic-level signals. In one recent brownfield substation upgrade, improper bonding introduced a 6V difference between the main grid and a remote control room—resulting in persistent PLC faults and unexplained SCADA dropouts until the bonding error was corrected.
Signal Reference Grids and Dedicated OT Network Grounding
While the facility GES provides the basic safety and fault-clearing function, OT network grounding solutions demand a more nuanced approach—especially for high-speed networks (Ethernet/IP, Profinet, Profibus, etc.) and distributed control architectures. The industry best practice, as outlined in IEEE 142-2007 and detailed in manufacturer design guides, is to provide a dedicated signal reference grid (SRG) in each control room or equipment area. This SRG is typically constructed using a grid of bare or insulated copper conductors (#6 AWG or larger), spaced no more than 1.2 meters apart and bonded at multiple points to the facility GES. The goal is to create a low-impedance reference “plane” for all OT devices—PLCs, HMIs, network switches, and field interface panels—to minimize differential noise and ensure stable logic-level voltages.
Design calculations must account for both DC resistance (for steady-state and fault current) and AC impedance (for high-frequency transients). For example, a #6 AWG copper conductor has a DC resistance of about 0.0013 ohms per meter, but at 10MHz (relevant for gigabit Ethernet signals), skin effect increases effective impedance considerably. The SRG should be sized to handle not only transient surges but also any accidental ground currents—aiming for a total grid resistance to the GES of less than 1 ohm. All OT equipment should have dedicated, short, and direct connections to the SRG, with conductor lengths minimized (ideally less than 6 feet per IEEE 1100, the Emerald Book) to prevent voltage differences during transient events.
In addition, network cable shields (for STP Ethernet, Profibus PA, etc.) require careful termination. The longstanding rule is “shield grounded at one end only” to prevent circulating currents, but this must be balanced with the need for high-frequency noise suppression. In practice, shield grounding is best handled at the SRG, with robust, low-inductance terminations (such as 360-degree clamps or shield bars), and isolated from equipment enclosures except at the designated ground point. In one facility, improper shield termination caused persistent packet loss on a redundant Ethernet ring, traced to differential-mode noise induced by variable frequency drives (VFDs) in a nearby MCC. After re-terminating the shields at the SRG and ensuring no parallel ground paths existed, network reliability improved dramatically.
Conductor Sizing, Equipment Grounding, and Bonding Strategies
Proper sizing and routing of all grounding conductors is a make-or-break factor in OT network grounding solutions. The minimum conductor sizes for equipment grounding are dictated by NEC Table 250.122, which scales with the largest overcurrent device protecting the circuit. For example, a 200A feeder requires at least a #6 AWG copper EGC, but for instrumentation panels and network racks, we typically oversize to #4 or #2 AWG to further reduce impedance and improve noise immunity. All bonding connections—to cable trays, racks, enclosures, and local ground bars—should be made with listed mechanical lugs, compression fittings, or exothermic welds, ensuring both electrical continuity and mechanical robustness. Every joint must be accessible for inspection, per NEC 250.70, and protected against corrosion (using antioxidant compounds or tinned conductors in corrosive environments).
For high-availability OT network installations, equipotential bonding is essential. This means all enclosures, cable trays, and metallic raceways are bonded both to the local SRG and to the facility GES at multiple points, with the goal of maintaining all “touchable” surfaces at the same potential, even during transient events. For example, in a facility with multiple distributed control rooms, each SRG is connected via a dedicated #2/0 AWG ground ring to the main GES, with additional bonds to all metallic raceways and cable trays along the path. This ensures that, during a lightning surge or a ground fault, no dangerous step or touch voltages can build up between isolated parts of the OT network. In one brownfield project, I encountered a site where isolated control panels on mezzanine platforms were left with only a #12 EGC—resulting in a 40V potential difference during a nearby ground fault and the destruction of two network switches. After retrofitting proper bonding, the problem was eliminated.
Equipment selection is also key. All network panels, racks, and enclosures should be specified with integral ground bars, and any paint or nonconductive coating at bonding points must be removed to ensure a low-resistance connection. Use only listed, corrosion-resistant hardware, and avoid dissimilar metal contacts to prevent galvanic corrosion. When specifying surge protection devices (SPDs) for network lines, select models with low let-through voltage (typically less than 50V for Ethernet lines) and ensure they are bonded directly to the SRG, not just the equipment chassis. Finally, every connection should be documented and tested—using ground resistance meters, clamp-on ground testers, or continuity testers—to ensure as-built conditions match the design. The best OT network grounding solutions are not “set-and-forget”—they require ongoing verification, maintenance, and adaptation as network architectures evolve.
Section 4 — Practical Design Considerations
Implementing optimal OT network grounding solutions in real-world industrial settings is far more challenging than it may first appear. Even with a robust design, field execution can go astray due to site constraints, material shortages, or a lack of skilled labor. In my experience, installations often suffer from “value engineering” cuts that compromise the grounding system—such as omitting supplemental rods, substituting smaller conductors, or skimping on proper terminations. When budgets get tight or schedules slip, grounding is one of the first things to be “de-scoped”—a costly error that inevitably leads to future reliability and safety problems. A fundamental best practice is to never treat grounding as a secondary priority: it must be installed, inspected, and tested with the same rigor as any other critical system in the facility.
Material selection plays a pivotal role in both initial performance and long-term reliability. Copper is the preferred material for grounding electrodes and conductors, prized for its low resistivity (~1.7×10-8 Ω·m) and excellent corrosion resistance. In highly corrosive environments (such as chemical plants or coastal facilities), tinned copper or copper-clad steel may be used to further resist degradation. Aluminum, while technically permitted by NEC 250.62, is rarely recommended for OT network grounding due to susceptibility to galvanic corrosion and its higher resistivity. All connectors and lugs should be listed for their specific use and environment—stainless steel hardware is preferred where moisture or corrosives are present. Insulation color coding (green or green/yellow) helps ensure that grounding conductors are not inadvertently used for other purposes during future modifications.
Environmental factors also influence installation decisions, particularly soil resistivity, moisture content, and potential chemical contamination. In arid or rocky soils, achieving the desired ground resistance may require soil augmentation (using bentonite or chemical rods) or the installation of deeper or more numerous ground rods. For sites prone to seasonal variation—ground that freezes in winter, for instance—grounding electrodes must be installed well below the frost line to maintain year-round effectiveness. Facilities in high lightning density regions should consider enhanced perimeter ground grids, lightning protection air terminals, and surge protection for network cabling routed outside or between buildings. In one New York-area manufacturing campus, we had to augment a standard rod grid with chemical-enhanced electrodes to bring the facility-wide ground resistance below 3 ohms, a requirement driven by both code and sensitive OT reliability needs.
Installation best practices can make or break the system. Ground conductors should be routed with minimal bends and as short as possible, avoiding sharp turns that increase impedance—especially important for high-frequency transients. All connections must be mechanically secure and electrically continuous: exothermic welds are the gold standard for buried conductors, while listed compression lugs are preferred for above-grade work. Paint, rust, or debris at connection points must be removed—one missed spot can add milliohms of resistance, enough to undermine the entire system in a fault event or transient. When bonding to enclosures or network racks, ensure all paint or powder coating is removed at the bond point and use star washers or serrated lock washers to “bite” into the metal and guarantee continuity. Cable shields should be terminated using proper shield bars or shield clamps, not just twisted and landed under a lug, to provide a full 360-degree ground path for high-frequency noise. Periodic testing is also essential: ground resistance, continuity, and impedance checks should all be performed and documented as part of the project closeout, and repeated at regular intervals thereafter per IEEE 142-2007 recommendations.
Finally, it’s critical to recognize the impact of future modifications, expansions, or equipment upgrades on the grounding system. Brownfield tie-ins, utility upgrades, and the installation of new networked equipment can all introduce potential differences, parallel ground paths, or points of failure if not managed properly. For example, connecting a new DCS cabinet to an existing signal reference grid without verifying the grid-to-grid bonding can create a floating ground issue, as I saw in a recent pharmaceutical plant expansion. The result? Unexplained network outages and erratic process signals—solved only after a comprehensive ground system audit and retrofit. This is why documentation, as-built verification, and ongoing maintenance are so critical. Grounding is not a “one and done” affair; it must evolve with the facility and its technology. The realities of construction, corrosion, environmental change, and human error mean that the best OT network grounding solutions are those that are both robust at the outset and rigorously maintained thereafter.
For more insights into electrical infrastructure considerations in the broader context of site selection, see NavonLogic’s deep-dive on electrical power load studies and reliability for manufacturing site selection. If you’re evaluating a new property or expansion, don’t overlook how underlying soil conditions, historical use, and existing infrastructure can impact your grounding system’s feasibility and long-term effectiveness.
Section 5 — Code and Standards Compliance
Compliance with electrical grounding standards is not merely an academic exercise—it is a legal, safety, and operational imperative. At the heart of grounding design for industrial and OT network systems is IEEE 142-2007, Recommended Practice for Grounding of Industrial and Commercial Power Systems, commonly known as the Green Book. IEEE 142-2007 provides the comprehensive technical foundation for grounding systems, offering guidance on everything from ground electrode design to the bonding of equipment and cable shields. Specifically, IEEE 142-2007 Section 6.2.1 details the requirements for establishing low-impedance connections between signal reference grids and the main grounding electrode system. This is vital for OT network grounding solutions, as it ensures both personnel safety and reliable operation of sensitive digital systems. Facilities that ignore these recommendations frequently experience intermittent control faults, unexplained equipment damage, and increased vulnerability to lightning and transient events.
NFPA 70, more commonly known as the National Electrical Code (NEC), is the enforceable legal standard in North America. Article 250 is the cornerstone for grounding and bonding requirements. For example, NEC Article 250.50 mandates that all grounding electrodes present at the facility be bonded together to form a single grounding electrode system. Article 250.66 provides tables for minimum grounding electrode conductor sizing, while Article 250.96 covers bonding methods for enclosures and equipment. OT network systems often straddle the line between power and communications, so it’s essential to reference Article 250.94 regarding bonding jumpers and Article 800 for communications circuit grounding. Failure to comply with NEC requirements can result in failed inspections, legal liability after an incident, and denial of insurance claims in the event of equipment loss or injury. I have seen projects delayed by months because a single cable tray bonding connection did not meet NEC torque and accessibility requirements.
IEEE 142-2007 is clear on the risks of improper or incomplete grounding for OT networks. Section 3.3.3 cautions against creating parallel ground paths—such as inadvertently bonding both ends of a shielded cable—because it introduces circulating currents and potential differences that can disrupt sensitive control and network communications. The standard also recommends that all metallic raceways, cable trays, and equipment racks associated with OT networks be bonded at both ends to the ground grid, but that shields themselves be grounded only at the designated reference point. This level of detailed guidance is what separates “code minimum” installations from truly robust, high-reliability systems that withstand the rigors of industrial environments.
Other relevant standards include IEEE 1100 (the Emerald Book), which focuses on grounding for sensitive electronic equipment, and OSHA 1910 Subpart S for workplace electrical safety. Many industrial clients are also subject to insurance or AHJ-mandated requirements that may exceed NEC or IEEE baseline recommendations. The consequences of noncompliance go well beyond the regulatory: in one instance, an industrial plant faced a $250,000 uninsured loss after a lightning-induced surge destroyed half the OT network—because the installation did not meet IEEE 142-2007’s recommendations for signal reference grid bonding. In another, a rejected insurance claim hinged on the fact that communication shields were terminated at both ends, in violation of both IEEE 142-2007 and NEC Article 800.100. Compliance, therefore, is inseparable from risk management and operational continuity. If you’re responsible for an industrial facility, you can’t afford to treat standards as “nice to have.” They are the only rational baseline for designing, maintaining, and upgrading your OT network grounding solutions.
Section 6 — Common Errors NavonLogic Sees on Industrial Projects
One of the most pervasive errors I encounter is the misapplication of shield grounding on network cables. Too often, installation crews terminate cable shields at both ends—believing, incorrectly, that this doubles the noise protection. In reality, this configuration almost always creates a ground loop, especially when remote cabinets are tied to different points on the facility ground grid. The result? Persistent communications errors, fried input cards, and sometimes complete loss of network functionality during transient events such as lightning or nearby large motor starts. The root cause is a misunderstanding of the difference between safety grounding and signal reference: while all exposed metallic parts need to be bonded for safety, shields are for noise immunity and should be grounded at the signal reference grid only. The fix is straightforward—terminate all network shields at the SRG, use proper shield clamps, and verify that no parallel paths exist. A periodic audit using a clamp-on ground tester can catch these errors before they lead to catastrophic failures.
Another common pitfall is the under-sizing or improper routing of equipment grounding conductors (EGCs) for OT network panels. It is not unusual to find network racks with only a #12 AWG ground run, or worse, sharing an EGC with non-OT loads such as lighting circuits or HVAC controls. This often happens because “low-voltage” is misinterpreted as “low risk,” when in fact, the digital electronics in OT systems are highly sensitive to even small voltage fluctuations or noise. During a nearby ground fault, an undersized or poorly routed EGC can allow significant transient voltages to appear on network devices, leading to lockups, memory corruption, or permanent hardware damage. The prevention is clear: always size EGCs per NEC Table 250.122 (or larger), route them as directly as possible to the signal reference grid, and keep them independent from non-OT load grounds. In one food processing plant, simply upgrading the network rack EGCs from #12 to #4 AWG and re-routing them away from VFD cable trays reduced unexplained downtime by 90%—a result that paid for itself in weeks.
Poor bonding and lack of equipotential grounding is another chronic failure mode—especially in brownfield sites or facilities that have undergone multiple rounds of upgrades and expansions. In these environments, it’s common to find “islanded” ground systems: new control panels tied to local rods, legacy equipment bonded only to building steel, or cable trays with intermittent or corroded bonds. During a fault or transient, voltage differences between these “islands” can induce dangerous step or touch potentials, as well as disrupt network operation. The solution is to conduct a comprehensive ground system survey, identify all isolated grounds, and retrofit robust bonding jumpers (typically #2/0 AWG copper) between all major metallic structures and the main GES. IEEE 142-2007 makes clear in Section 7.5.1 that all metallic structures in the vicinity of electrical equipment must be bonded to prevent hazardous potential gradients. Regular maintenance—visual inspection, torque checks, and resistance measurements—can catch deterioration before it becomes a hazard.
Finally, a recurring and subtle issue is the failure to update grounding documentation and perform as-built verification after equipment changes. Even in well-designed facilities, undocumented changes—such as relocating a PLC rack or adding new network switches—can inadvertently break critical ground bonds or create unnoticed parallel paths. The cumulative effect is often not noticed until a failure occurs, by which time it may be difficult to reconstruct what went wrong. The prevention is twofold: first, implement rigorous change control and require detailed as-built documentation (including ground conductor routing and terminations) for every modification; second, make periodic field verification—using resistance and continuity testers—a routine part of maintenance. In one energy facility, lack of documentation meant an entire control room was left with a floating ground after a panel was moved during a renovation. The fix, once identified, was simple—but the outage and troubleshooting effort cost days of lost production. Never underestimate the “soft” side of grounding: documentation, inspection, and training are just as critical as conductors and clamps.
Section 7 — NavonLogic Electrical Safety and Grounding Review Services
At NavonLogic, our Electrical Safety and Grounding Review services are designed precisely to address the complex needs and pitfalls described above. We take a holistic, field-proven approach that goes far beyond simple code compliance. Our reviews begin with a thorough assessment of your facility’s grounding and bonding philosophy: we evaluate how your grounding system supports OT network reliability, electrical equipment protection, and—most importantly—personnel safety. We scrutinize your adherence to electrical safety standards, project-specific criteria, and industry best practices, drawing on decades of hands-on experience in industrial environments. For every project, we specifically assess step and touch potential risk, arc flash assumptions and protection coordination, and meticulously verify field installations and documentation. We don’t just check off boxes—we interrogate every link in the chain, from the main ground grid down to the smallest network shield clamp.
Our Electrical Safety and Grounding Review is particularly valuable before brownfield tie-ins, utility upgrades, substation work, equipment replacement, and commissioning of new OT networks. These are the moments when assumptions about existing infrastructure can lead to disaster if not rigorously validated. We often find previously unknown risks, such as parallel ground paths, inadequate electrode systems, or documentation gaps that could lead to code violations or catastrophic failures. When necessary, we recommend actionable, prioritized improvements—whether that’s upsizing conductors, re-routing bonds, installing supplemental ground rods, or updating your grounding diagrams and O&M manuals. Our deep knowledge of the interplay between grounding and industrial automation is what sets us apart. Proper OT network grounding solutions are the backbone of reliable, safe, and maintainable industrial control systems—and we have the expertise to deliver them, every time.
If you’re planning a project—new construction, expansion, or troubleshooting a recurring reliability issue—reach out to NavonLogic for a comprehensive Electrical Safety and Grounding Review. We invite you to request a review and let us show you the difference that true subject-matter expertise can make. To further support your site selection and due diligence process, review our insights on utilities infrastructure and costs and workforce availability in manufacturing site selection—key factors that are tightly connected to electrical reliability and operational success.