A high-voltage power line that moves electricity over long distances between generation sources and distribution networks. Subcontractors often support transmission line projects through clearing, trenching, tower erection, and right-of-way maintenance work.
Transmission Line
Related Terms
Workover
IndustryOperations performed on an existing well to restore, maintain, or improve production. Includes activities like recompletions, artificial lift installation, and remedial cementing.
Laydown Area
IndustryA designated yard space on a jobsite used to store, stage, and organise equipment, pipe, or materials. Subcontractors are often assigned a specific laydown area to manage their tools and gear. Access and cleanliness standards are typically enforced by the prime contractor or owner.
RAP (Reclaimed Asphalt Pavement)
IndustryMilled or crushed material salvaged from existing asphalt surfaces during road removal or rehabilitation work. Subcontractors reuse RAP as base material or blend it into new asphalt mixes, reducing material costs. Proper handling and testing requirements may apply depending on project specs.
Pipeline Tie-in
IndustryA pipeline tie-in is the physical connection of a new pipeline section to an existing live system. For subcontractors, tie-in work often requires hot-tap certified crews and strict isolation procedures. Scheduling is critical, as tie-ins typically involve planned shutdowns with tight production windows.
Grid-Tie
IndustryA system that connects on-site power generation to the utility grid. Subcontractors working on grid-tie installations must coordinate with utility companies and meet strict interconnection standards. Common on solar and wind projects in remote industrial or construction settings.
Reamer
IndustryA downhole tool that enlarges or stabilises a borehole during drilling operations. Subcontractors supplying or operating reamers must ensure proper tool specifications match formation conditions. Rental and mobilisation costs are typically scoped into the drilling services contract.
Latest Industry News
Hydro One Files for Approval on $430M Ontario Transmission Line Targeting 2029 In-Service Date
Hydro One has applied to the Ontario Energy Board to build a 55-kilometre, 230-kilovolt transmission line between Clarington and Peterborough County, representing a $430 million construction opportunity for utility subcontractors.
1 month agoIndustryNextEra Commissions 137-Mile Crossroads-Hobbs-Roadrunner Transmission Line in SE New Mexico
NextEra Energy Resources has commissioned a 137-mile transmission line connecting Roosevelt and Lea Counties in the Permian Basin, unlocking grid capacity for oilfield electrification and future load growth.
1 month agoIndustryFederal Judge Blocks Nebraska's Sand Hills Transmission Line Over Emergency Fast-Track Violations
A federal judge voided the Fish and Wildlife Service approval for Nebraska's 226-mile R-Project transmission line, ruling that regulators failed to show the project met the legal requirements to bypass standard environmental review.
1 month agoIndustryNebraska Approves 220-Mile Sandhills Transmission Line Over Landowner Objections
Nebraska's Public Service Commission voted 3-1 to approve the Nebraska Public Power District's $800 million R-Project transmission line through the Sandhills, clearing a 13-year regulatory battle despite rancher, tribal, and environmental opposition.
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Industry GuideHow Rig Count Trends Affect Subcontractor Demand and What to Do About It
Rig counts are the earliest signal of where field service work is heading. Learn how to read drilling activity trends, anticipate demand shifts, and position your crew before the phone stops ringing.
Industry GuideWhat Is an AFE in Oil and Gas and How Does It Affect Subcontractor Payments?
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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