Utility and Power Facility Construction in the Denver Metro

Substation yards are mostly civil work, and that is where we focus. Before a transformer is set or a breaker is energized, someone has to grade the pad, build a ground grid trench, pour foundations for dozens of structures, lay conduit and cable trench, form oil containment, surface the yard, build an access road and fence the whole site to the owner's standard. We manage that work for utilities, independent power developers, large heavy-industry users with their own substations and the data centers and plants that depend on them across the Denver metro.

The buyer's concerns are practical. Outages are scheduled in narrow windows, so construction around live equipment has to be planned to the hour. Material lead times for transformers and switchgear can run well beyond the civil schedule, so the site must be ready when equipment arrives and protected until then. Compliance runs through utility standards, environmental permitting and the local jurisdiction, and a missed submittal can idle a crew. Our project managers track each of these items weekly and report them in plain terms.

We also build the occupied side of a utility campus: control houses, relay buildings, maintenance shops and warehouses. These are generally modest buildings with demanding details, such as cable entries, raised floors and fire separation, and they must be completed on the same clock as the yard. Owners who want one contractor for both appreciate the single schedule and the single warranty.

Managing yard civil work

We schedule and inspect excavation, subgrade preparation, drilled and spread foundations, concrete cable trench, duct bank, ground-grid trenching support and yard surfacing. Managing that work as one scope gives us control of sequence and tolerances. A transformer pad has to be level, correctly reinforced and cured before heavy equipment arrives, and anchor bolt layouts must match the manufacturer's template to the fraction of an inch.

We coordinate underground electrical and communication systems through our electrical duct bank capability, using encased conduit, manholes and pull boxes with the spacing and bend limits cable installers expect. Where site utilities such as water, sewer and storm drainage are needed for a control building or maintenance facility, we integrate them with the yard grading instead of treating them as separate trade packages.

Energy infrastructure already shaping the metro

Energy is part of the metro's industrial fabric. The Suncor refinery in Commerce City processes 98,000 barrels per day and produces gasoline, diesel and paving-grade asphalt, and its electrical, steam and process utilities are a large and constant load. The National Renewable Energy Laboratory's South Table Mountain site near Golden covers 327 acres, of which 136 acres are available for development, 177 acres are protected by a conservation easement and 14 acres are restricted by utility easements.

Those numbers show the constraint that governs power sites here: land that is flat and accessible is often protected, easement-burdened or contaminated. Owners need a builder who reads the easements, the soil reports and the access limits before design, and who can say what is buildable. Our Golden and Commerce City experience covers both research-campus and heavy-industrial settings.

Working near energized equipment

Construction near live bus and overhead lines is governed by minimum approach distances, clearance procedures and the owner's own work rules. Before mobilizing, we hold a job hazard review with the owner's operations group, mark energized equipment, designate spotters for cranes and drill rigs and verify utility locates. Crews take site-specific orientation, and visitors are escorted.

Environmental safety also matters. Oil-filled equipment requires containment designed to the owner's spill prevention plan, and stormwater controls must keep sediment and spills out of the drainage system. We maintain spill kits, inspect erosion controls after storms and document each inspection so the owner's environmental staff have the record they need.

Codes, electrical editions and energy rules

Electrical editions are set at the state level while building codes vary by city. Thornton's tracker entry lists the 2023 NEC, and the City of Lakewood lists the 2023 NEC among its adopted codes with local amendments. Utility-owned facilities often follow the utility's own standards in addition to local code, and where the two differ we flag the conflict early so the design team can resolve it.

For buildings on a power campus, energy provisions under HB22-1362 may apply: any county or municipality that updates its building code on or after July 1, 2023 must adopt an energy code with equivalent or better performance than the 2021 IECC and the state model electric and solar ready code. Where on-site storage or generation is planned, we coordinate electric-ready provisions with the permitting authority.

Where we build power and utility work

North of downtown, the Rocky Mountain Arsenal area is a clear example of how site history shapes a project. The Army will permanently manage about 1,000 acres of the former arsenal containing landfills, waste consolidation areas and groundwater treatment facilities. Work on or near such areas requires strict soil management, restricted-excavation protocols and close contact with the managing agency.

Elsewhere in the metro, we build at industrial parks, along utility corridors and next to highways where access roads and laydown space are available. Where a client needs fencing and electronic security, our fencing and security integration covers the perimeter, gates, lighting and conduit for access control and cameras.

Controlling the schedule risk in utility work

Three items cause most delay: outage windows that slip, long-lead equipment that arrives late, and permits for work near floodplains, wetlands or restricted land. We build the schedule backward from the outage date and add float for weather. We hold a weekly equipment status review with the owner's procurement staff so that any shift in delivery date is reflected in the plan within days.

Building choices can also help. A prefabricated control building or a pre-engineered metal building for a maintenance shop reduces on-site labor and weather exposure. Our site utilities package ties water, sewer and storm connections to a single schedule, so these small elements do not hold up energization.

Send the one-line and the site

Share the preliminary layout, equipment list and outage constraints. We will return a civil scope review, schedule outline and budget range for your power or utility project in the metro.

Common Questions

Can you work inside an existing energized substation?

Yes, with the right controls. We plan outages, work zones and clearances with the owner's operations staff, use qualified personnel and mark the limits of approach. Heavy excavation near grounding and buried cable is done with potholing and hand digging where needed. Each task is reviewed before work begins, and the owner can stop work at any time.

How do you protect the schedule when transformers are delayed?

We cannot control the manufacturer, but we can make delay cheaper. The civil work is completed and the yard secured so the equipment can be set quickly once it arrives. Foundations are protected, conduits capped and the access road maintained, and we keep crews and cranes on call for the set date rather than demobilizing for weeks.

What soil and environmental checks come first on a power site?

A geotechnical investigation for bearing capacity and corrosion potential, a review of floodplain and wetland maps, and a check for known contamination or restrictions on the parcel. In parts of the metro where industrial history is long, a Phase I environmental assessment is a standard first step. Findings affect foundation design, excavation handling and the cost of disposal.

Do you handle fencing and security as part of the project?

Yes. We build perimeter fencing with the height, topping and gate types the owner specifies, install the conduit and pull boxes for access control and cameras, and coordinate with the security integrator on power and communications. Lighting is designed to meet security and safety needs without spilling onto neighboring properties.

What should an owner provide at the start of a utility civil project?

The preliminary one-line diagram, equipment layout with foundation reactions, the geotechnical report, survey, easement documents and the outage constraints. With those, we can build a reliable schedule and budget. Without them we make assumptions and list them, and the owner can then decide which to confirm first.

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