Construction Site Power

Construction site power, from the first trailer to the permanent service.

A generator is one part of it. The rest is getting that power to the trailer row, the crane and every floor's tool circuits, keeping it running through weekends and winter, and handing over cleanly when the utility arrives — planned as one system and quoted as one package.

The first decision

Utility, generator, or both? Decide it before the site plan is drawn.

Where the power comes from sets everything downstream of it — the size of the set, how long it stays, where the panels go and whether a transfer switch belongs in the package. It is also the one question that usually gets answered too late.

A temporary utility service

Where the utility can set a temporary service on the lot in time, it is usually the cheapest power over a long build — but the connection is booked on the utility's schedule, not the project's, and a site that cannot start without it is waiting on someone else's calendar.

A generator from day one

The answer for a greenfield lot with no service nearby, a remote site, or a schedule that will not wait. Nothing to apply for, and power arrives with the first trailer — at the cost of fuel and a unit that has to be looked after.

Both, in sequence

The common case on a larger build: a generator carries mobilization and the early structure, and hands over to the temporary service or the permanent supply once it is energized. Planned from the start, the switchover is an afternoon rather than a scramble.

Sizing the generator itself for each phase of the build — crane starts, the step down for fit-out, voltage — is covered on construction generator rental.

Laying it out

From one set to every outlet on site.

01

Where the set sits

Close enough to the load that cable runs stay short, far enough from the trailers that exhaust and noise stay outside them, and somewhere a fuel truck can reach without crossing the laydown yard.

02

One main panel, then branches

The generator feeds a main distribution panel, which splits to the places that actually draw power: the trailer row, the crane or hoist, pumps, and the tool circuits on each floor. Panels in the fleet run from 30 A to 1,200 A, so each branch gets gear sized to it.

03

Cable that survives the site

Runs that cross roadways, follow the building up as it rises and get moved every time the laydown changes. Distance is planned at the quote, because a long run on a big site is where voltage drop starts tripping equipment.

04

A switch for the handover

Where the site will move from generator to utility — or needs the generator to take over when a temporary service drops — a transfer switch makes it a controlled switchover instead of a re-termination.

Two containerized NPI generator packages cabled into a distribution skid
Keeping it running

A site that goes dark stops paying its crews to work.

Most lost days on temporary power are not a generator failing. They are a tank that ran dry, one set carrying a load that could not afford to stop, or heat and light sharing a source they did not need to share.

Fuel that does not run out on a Sunday

A fuel tank beside a diesel set stretches the gap between deliveries, so a long weekend or a snowed-in access road does not end with a dark site on Monday.

A second source for the critical load

Concrete pours, dewatering pumps and heated enclosures are the loads that cannot stop. On those, a second set or a switch to a backup source is cheaper than the pour.

Light and heat on their own feet

Light towers and flameless heaters carry their own engines, so night work and winter heat do not load the site generator or share its fate if it stops.

Service when something trips

Field service answers 24/7. A set that faults at night on a pour is a call to the people who supplied it, not a search for whoever is open.

The rest of the package

The rest of the site package, on rent today.

Distribution, fuel storage, light towers and flameless heat, read live from the rental fleet. The generators are on construction generator rental, sized by build phase.

Proving the building's permanent standby set at commissioning? Load bank rentals do that before the owner takes the keys. For power across the province, see generator rentals across Alberta.

Site power questions

Asked at the pre-construction meeting.

Should a construction site use a generator or a temporary utility service?

It depends on how soon the utility can connect, how far the site is from service and how long the build runs. A temporary service is usually cheaper over a long project if it arrives in time; a generator is the answer when it will not, when the site is remote, or for the months before the service is live. Many sites use a generator first and switch over later.

What does a construction site power package include?

Whatever the site needs between the source and the plug: the generator, a main distribution panel and branch panels for the trailers, crane and tools, cable, a transfer switch where there will be a handover, and fuel storage. Light towers and flameless heaters are often quoted in the same package so one delivery covers the site.

Who connects and permits the temporary power?

It varies by job. On some sites the project's own electrical contractor terminates the distribution and holds the permit; on others the connection is arranged as part of the package. A temporary installation is still an electrical installation, so settle who owns the permit and inspection before the delivery date, not on it.

Can the generator stay on after the permanent power is energized?

Yes, and it often should for a while. Keeping the set connected through a transfer switch while the new service settles gives the site a fallback during commissioning. When the permanent supply has proven itself, the set goes back — or stays as standby if the building's own generator is not in yet.

Can you power a remote jobsite with no utility nearby?

Yes. A remote site is a generator site for its whole life, so fuel storage and a backup source for the critical loads matter more than they do in town. Natural gas or propane packages are worth considering where there is gas on or near the site, because they take fuel deliveries off the schedule.

How do I get a quote for construction site power?

Send the site address, the start date and expected duration, what will draw power — trailers, crane or hoist, pumps, welders, heat — and whether a temporary or permanent utility service is planned and when. The quote comes back in writing, with the distribution laid out, and sizing advice costs nothing.

Send the site plan and the schedule.

The address, the dates, what draws power and when the utility is expected. The quote comes back in writing with the source, the distribution and the handover laid out — one package, one supplier to call.