Power Needs and Wants: Understanding Power in Industrial Buildings

Tim had a metal-working business in steady growth mode, with demand increasing month over month.

Tim needed more space for his business, but the problem was that everyone else needed more space too. And it wasn’t just an industrial building Tim needed — he needed a space with enough power to run the equipment and tools his business relied on. Large air compressors, heavy machinery, and welding equipment, all sited in a heated and air-conditioned space.

As Tim searched for space, he realized he needed to ask about power first. Many investment property owners who hold these buildings don’t fully understand the power needs of their industrial tenants.

Let’s cover the basics of power in industrial buildings, so your next move as an investor or business owner can take it into careful consideration.

Understanding Power in Industrial Buildings: A Guide for Manufacturing Facilities

Power infrastructure is one of the most critical considerations when evaluating or developing industrial real estate, particularly for manufacturing use. Whether the facility supports light assembly or heavy fabrication, understanding electrical requirements can make or break operations. For commercial real estate brokers, investors, or operators, recognizing how much power a manufacturing facility generally needs — and how to evaluate it — is essential to aligning real estate capabilities with business productivity.

Types of Power in Industrial Real Estate

Volts (voltage) — ‘electrical pressure.’ Volts (V) measure the electrical force or pressure that pushes electrons through a wire. Think of it like water pressure in a pipe — the higher the voltage, the more potential to move electricity. Common commercial voltages include 120V, 208V, 240V, 480V, and sometimes 600V. Higher voltages allow for more efficient power delivery to large equipment or long runs of wire with less energy loss.

Amperage (amps) — ‘volume of flow.’ Amperage (A) measures the amount of electrical current flowing through a system — how many electrons are moving. If voltage is pressure, amperage is the volume of electricity flowing. High-amperage services (800A, 2,000A, and up) are needed to support power-hungry machinery in industrial buildings.

Watts (power) — ‘work being done.’ Watts (W) measure the actual power used by a device or system — the combination of volts and amps: Watts = Volts × Amps. If you’re running a 480V piece of equipment that draws 100 amps, the power consumption is 480V × 100A = 48,000 watts, or 48 kW. This tells you how much power the system is consuming and helps size electrical service or calculate energy costs.

Phases

In industrial buildings, electricity is typically supplied in two primary formats: single-phase and three-phase power.

• Single-phase power is sufficient for small office needs and light industrial uses. It delivers standard 120/240V and is common in warehouse-office hybrids or low-power users.
• Three-phase power is the standard for industrial manufacturing. It provides more stable and efficient electricity at higher voltages and amperages (208V, 480V, or even 600V), required for motors, CNC machines, HVAC systems, welders, presses, and conveyor systems.

The formula for calculating three-phase power uses the square root of 3, factoring in the three alternating currents.

A building’s power rating is typically described in terms of amperage and voltage, and sometimes in kilovolt-amperes (kVA) or kilowatts (kW) when discussing capacity. Utilities generally provide service through on-site transformers, which step power down from transmission lines to usable voltage levels. The capacity of these transformers, measured in kVA, defines how much total power a building can draw at once.

How Much Power Do Manufacturing Facilities Need?

Manufacturing facilities have a wide spectrum of power needs depending on the type of manufacturing (electronics vs. metalworking, for example), the scale and density of equipment, shift schedules, and the degree of automation or robotics.

Here’s a rough estimate of general power needs based on building size and use:

• Light assembly / packaging: 200A–600A at 208V or 480V
• Mid-sized CNC / metal fabrication: 800A–2,000A at 480V
• Heavy industrial / foundry: 2,000A–4,000A+ at 480V or 600V
• Food processing with refrigeration: 1,000A–3,000A at 480V or 600V

As a rule of thumb, 1,000 amps at 480V equates to roughly 830 kW of usable power. However, most electrical systems have a demand factor applied, meaning not all equipment operates at full load simultaneously. Utility engineers or electrical contractors can calculate the ‘actual’ draw based on equipment specs and load profiles.

Evaluating Power at an Industrial Property

When looking at a prospective facility, buyers or tenants should ask:

1. What is the current electrical service? Look for information on the main panel — amps and voltage rating — and confirm whether the building has three-phase power.
2. What is the capacity of the transformer and utility feed? The transformer’s kVA rating will indicate upper limits; it’s common to see older buildings with 400A or 600A capacity that may need an upgrade.
3. Is there capacity to expand? Contact the local utility to confirm whether additional power is available to the site — transmission lines sometimes have limited capacity, so availability is a major consideration, and expansion can be costly and time-consuming if the utility line infrastructure is undersized.
4. What is the condition of the electrical infrastructure? Some buildings have outdated panels, obsolete switchgear, or unsafe wiring. Wiring in older buildings typically has a 50-70 year lifespan, less if it’s been exposed to heat, moisture, or high demand draws. An inspection by an industrial electrician is highly recommended to assess the type, age, and condition of the electrical components.

Tips for Matching Power to Operations

• Plan ahead. If a manufacturing operation expects to scale in the future, plan for extra electrical capacity during the site selection phase — in high-demand local markets, the utility provider may be years away from being able to provide added capacity.
• Consider backup power. In critical operations like cold storage, pharma, or food, invest in generators or uninterruptible power systems (UPS).
• Factor in HVAC. Large manufacturing spaces with specialized cooling or heating may require significant additional electrical capacity. Spaces with full climate control command higher rents than spaces with just gas or propane heaters, largely because of the higher electrical draw and equipment expense involved.
• Check code compliance. Local jurisdictions may require upgrades if a use change or occupancy permit is triggered.

Final Thoughts

In industrial real estate, power isn’t just a utility — it’s a critical asset that directly impacts tenant productivity, equipment reliability, and long-term scalability. Manufacturing tenants or investors evaluating buildings should treat power analysis with the same scrutiny as zoning or structural capacity. In some regions, particularly older industrial corridors, limited utility infrastructure may be a constraint to expansion, while new industrial parks often offer pre-engineered, high-capacity electrical service.

Many investors we work with benefit from the additional resources and knowledge we’re able to provide, so they can make strategic, informed decisions for each investment. Contact us today to plan your next investment move and ensure a highly profitable endeavor.