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IndustryGlossary Term

Switchgear

Electrical equipment used to control, protect, and isolate power systems on job sites. Subcontractors working near switchgear must follow strict lockout/tagout procedures. Installation and maintenance work often requires certified electricians and site-specific safety permits.

Related Terms

LPT (Large Power Transformer)

Industry

A high-voltage transformer exceeding 100 MVA used in electrical substations and large industrial facilities. Subcontractors are often mobilised for LPT installation, maintenance, or emergency replacement work. These units require specialised rigging, permitting, and certified electrical crews due to their size and criticality.

Pjm (pennsylvania-New Jersey-Maryland) Interconnection Queue

Industry

A waiting list managed by PJM for new power generation and transmission projects seeking grid connection approval. Subcontractors use it to track upcoming infrastructure builds and time their bids accordingly. Long queue backlogs signal sustained field work demand in the PJM service territory.

Sitework

Industry

Preparatory ground-level work completed before main construction begins, including grading, excavation, and utility rough-ins. Subcontractors are often scoped for sitework as a standalone package. Delays in sitework directly impact downstream trade access and schedule.

Battery Storage

Industry

Systems that store electrical energy on-site for use during peak demand or grid outages. Subcontractors increasingly deploy these on remote job sites to reduce generator fuel costs. They also support electrified equipment fleets and temporary power setups.

Unconsolidated Formation

Industry

Loose, weakly bonded subsurface material — such as sand, gravel, or soft clay — that hasn't hardened into solid rock. These formations create unstable borehole conditions, increasing risk of collapse and equipment loss. Subcontractors drilling or excavating in these zones often face additional scope, specialised equipment requirements, and potential cost disputes.

Private Activity Bonds

Industry

Tax-exempt bonds issued by governments to finance private infrastructure projects like pipelines or terminals. Subcontractors may work on bond-funded projects, which often carry strict procurement and reporting requirements. Understanding this can affect how you bid and invoice on qualifying jobs.

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