Electrical for Calgary warehouses and logistics buildings

CCT 01How a warehouse buys electrical work

Warehouses are bought three ways. An owner-occupier controls the whole building and can plan lighting, charging and service capacity together. A tenant in a multi-bay building leases a bay whose service, meter and base lighting the landlord provides, and adds racking lighting, charger circuits, dock equipment and an office fit-out under the lease. An owner in an industrial condominium controls the bay but shares the incoming service and switchgear with the corporation.

The lease or condo bylaws decide what a tenant or unit owner may change. Before committing to a bay, record the bay’s service rating, voltage and phase, the landlord’s obligations for lighting and dock equipment, and the restoration clause for anything added. Calgary requires separate electrical permits for base-building work and for tenant spaces ¹, which mirrors the lease split.

A change of operation changes the assessment. A bay leased for bulk storage may carry little more than lighting and door operators; the same bay run as a distribution or light processing operation can add conveyors, sortation, charging and extended hours. Reassess the electrical supply whenever the operation changes, not only when the tenant does.

Much of the region’s distribution space is outside the city. Balzac, for example, is in Rocky View County, which issues its own permits and is often served by a different wire utility. The Calgary permit and ENMAX details on this page do not automatically apply there.

CCT 02High-bay lighting: hours, aisles and controls

In a warehouse that runs long hours, lighting is often one of the largest electrical loads, and operating hours decide the economics of changing it. A single-shift building and a multi-shift distribution centre with identical fixtures have very different paybacks. Build the case on a documented fixture inventory and the hours each area is actually lit, not a generic saving figure. The LED retrofit payback calculator does the arithmetic from your own inputs.

Layout follows the racking. High-bay fixtures belong over aisles, not over the tops of racks, and a change of racking can strand fixtures that were well placed for the last layout. Working at height over racking needs lifts, floor space and a plan to protect inventory. Aisle occupancy sensors, daylight control near skylights and dock doors, and scheduling reduce hours further; see lighting controls.

The energy code is part of the scope. The National Energy Code of Canada for Buildings 2020 came into force in Alberta on May 1, 2024 ², at Tier 1 for buildings outside Part 9 ². Ask the designer to state how its lighting and control provisions apply to the alteration being priced.

Incentives are thin. ERA’s Energy Savings for Business program has allocated all its funding ³, and Calgary’s Commercial CEIP, which finances up to $1,000,000 but excludes properties marked industrial, is paused ⁴. Price a retrofit on its own payback. The LED lighting retrofits page covers fixtures versus kits and the retrofit sequence.

CCT 03Forklift and fleet charging

Forklift charging is a process load with its own layout questions. Flooded lead-acid batteries are typically charged in a dedicated area whose ventilation and eyewash provisions belong to the mechanical and safety designers. Lithium-ion fleets are often opportunity-charged at chargers spread along aisle ends and dock walls. Either way, each charger’s nameplate sets its supply, many are three-phase units, and every location needs impact protection from the traffic it serves.

Battery fire risk belongs in the charger layout discussion. Calgary recorded an estimated $32 million or more in property losses from lithium-ion battery fires in 2025 ⁵. That is a city-wide figure across all uses, not a warehouse statistic, but it is a good reason to involve the fire protection designer and the insurer before chargers are placed next to high-piled storage.

Electric delivery vans and yard trucks add larger, concentrated loads. ENMAX bills demand in kVA, and the ratchet holds billing demand at up to 90% of the highest reading in the past 365 days ⁶. A site whose demand exceeds 150 kVA twice in a year moves to the D310 rate ⁶, where energy is split between an on-peak window of 8 a.m. to 9 p.m. on weekdays and off-peak hours ⁶. Overnight charging under load management is usually the lower-cost pattern. See workplace and fleet EV charging.

CCT 04Docks, doors, conveyors and the cold

Each dock position can carry a leveller, an overhead door operator, a vehicle restraint, a dock light for the trailer interior and red-green communication lights, all interlocked in ways the dock-equipment supplier specifies. Establish whether the landlord or the tenant owns each item and who wires the interlocks. Conveyors and sortation add motor feeders and control panels; the material-handling vendor and the electrical designer must agree where the vendor’s power and controls scope ends. Motor feeders, controls and drives are covered under industrial electrical.

Calgary’s climate adds winter loads. The January 2.5% design temperature is -30 °C ⁷, so dock areas need heaters, door seals and sometimes heat tracing on water and sprinkler lines, and truck courts may need receptacles for block heaters. Exterior and yard lighting runs longest in the months when the heaters do.

Emergency lighting along aisles and exits must keep pace with the racking plan. Self-contained emergency units are tested monthly, and other emergency lights and exit signs are covered by one annual inspection ⁸.

CCT 05Service capacity, leased bays and ENMAX

Adding chargers, conveyors or cooling to a bay can outgrow the bay’s service even when the building has capacity to spare. The options range from a larger feeder from the landlord’s switchgear to a new or upgraded utility service. Any service over 200 A is metered through current transformers under ENMAX’s CT process ⁹, and the City requires plans and drawings for new construction or service upgrades of 600 A and higher ¹.

ENMAX’s investment is a credit toward the cost of new load, not a price. For medium and large commercial sites it is $367 per kVA of minimum contract demand on a 15-year agreement, $245 on a 10-year agreement or $122 on a 5-year agreement ¹⁰. A tenant committing to a long demand agreement for a short lease should read the term carefully. The ENMAX commercial service connection guide sets out the steps, and the service upgrade and switchgear cost guide explains what moves the price.

For the building permit, the Alberta building code exempts industrial buildings of one storey up to 500 m² from needing a registered professional; larger buildings need authenticated drawings ¹¹. Most warehouses are well above that size.

CCT 06Typical warehouse scopes and where they sit

Ask for these as separately priced packages. A single lump sum for "warehouse electrical" makes it impossible to see which package carries the risk or to phase the work around the operation.

CCT 07Working around shipping and receiving

Electrical work in an operating warehouse competes with picking, loading and forklift traffic for the same floor. Agree work zones, lift routes, protection of stock from dust and dropped material, and the hours each zone can be closed. Night and weekend work may be the only practical window for aisle lighting, and it changes the labour rate.

Shutdowns for tie-ins or service changes stop docks, conveyors and chargers together. Plan them around the shipping calendar and confirm with the fleet manager that vehicles will be charged beforehand.