A power transmission system that moves large amounts of electricity over long distances using direct current. Subcontractors may encounter HVDC infrastructure on remote energy projects, pipeline corridors, or renewable tie-in work. Specialised certifications and safety protocols are typically required before working near HVDC lines or converter stations.
HVDC (High-voltage Direct Current)
Related Terms
Hot Shot
IndustryExpedited delivery service for equipment, parts, or materials to remote job sites. Often used for urgent oilfield deliveries.
Energy Security
IndustryA nation's ability to maintain reliable, uninterrupted energy supplies. For subcontractors, it drives long-term project demand in oil, gas, and infrastructure. Governments prioritising energy security often accelerate capital spending, creating sustained work opportunities.
Concrete Ties
IndustryHeavy precast concrete blocks or collars used to anchor pipelines and prevent buoyancy in wet or unstable ground. Subcontractors install them during pipeline construction, often requiring specialised lifting equipment and crews. Scope and quantity directly affect labour hours and equipment costs in your bid.
Full-Depth Reclamation
IndustryA road rehabilitation method where the full pavement structure is pulverised and mixed with the subgrade to create a stabilised base. Subcontractors use specialised reclaimers and stabilisers to complete the work in a single pass. It is common on oilfield lease roads and remote access routes requiring cost-effective repair.
Class 8
IndustryThe heaviest category of commercial trucks, rated at over 33,001 lbs gross vehicle weight. Common in oil and gas field work for hauling heavy equipment, frac sand, and pipe. Operators require a Class 1 licence in Canada.
Reinforcing Bar (rebar)
IndustrySteel bars embedded in concrete to add tensile strength in foundations, structures, and infrastructure builds. Subcontractors handling rebar must account for material costs, placement labour, and tie wire in their bids. Improper installation can trigger costly rework and inspection failures.
Latest Industry News
Mortenson to Build $450M HVDC Line Upgrade Across North Dakota, Minnesota
Minnesota Power broke ground on a $450 million HVDC transmission modernization with Mortenson as general contractor, replacing 50-year-old infrastructure across a 465-mile line tied to a proposed Google data center.
1 month agoIndustryJacobs-PCL Wins $1B SF Plant Upgrade Built Around Live Operations
SFPUC picked a Jacobs-PCL joint venture for a $1 billion progressive design-build nutrient reduction project at its largest treatment plant. The plant must keep running during construction, which shapes how subs should pursue early involvement.
20 hours agoIndustryWelspun Wins $580M Pipe Order for Permian Gas Line Feeding Data Center
Welspun Tubular won a roughly $580 million order to supply coated steel pipe for a Permian Basin natural gas pipeline serving a hyperscaler data center complex. Deliveries are expected in fiscal year 2029.
20 hours agoIndustryXcel Energy Sets $70B Plan With 9.2 GW Renewables, 2.3 GW Storage
Xcel Energy's five-year capital plan rises 17% to $70 billion, with 9.2 GW of renewables, 2.3 GW of storage, 3.3 GW of gas and 2,400 miles of new transmission. Here is what the plan means for foundation, collection and substation crews.
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Industry GuideHow Rig Count Trends Affect Subcontractor Demand and What to Do About It
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An AFE (Authorization for Expenditure) controls every dollar spent on an oilfield project. Learn how it affects your billing, change orders, and cash flow as a subcontractor.
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