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Infrastructure & Technologies


I Need To Hire a Utility Contractor. Where Do I Start?

In June 2012, the Ontario Legislature unanimously passed Bill 8, the Ontario Underground Infrastructure Notification System Act, which, among other things, requires owners of buried infrastructure in the public right of way – including municipalities, universities, hospitals and private...

Distribution Grid Monitoring Technologies

How to improve situational awareness of grid operations BY MARK FEDERLE, QinetiQ North America The adoption of Smart Grid technology in recent years has accelerated the modernization of the electric utility grid. This is a positive development given that the grid infrastructure in North America is,...

Working Live on Transmission Line Structures

Developing protective coating maintenance strategies BY GEORGE JUHN & ALEX MOGILEVSKY, CEATI International Aging of the electrical transmission infrastructure has resulted in an increased need for maintenance to ensure a reliable supply of power to customers who have higher expectations than...

Infrastructure & Technologies

High Voltage AC Transmission Lines

Three-phase electric power systems are used for high and extra-high voltage AC transmission lines (50kV and above). The pylons must therefore be designed to carry three (or multiples of three) conductors. The towers are usually steel lattices or trusses (wooden structures are used in Germany in exceptional cases) and the insulators are generally glass discs assembled in strings whose length is dependent on the line voltage and environmental conditions. One or two earth conductors (alternative...

Related Articles


Working Live on Transmission Line Structures

Developing protective coating maintenance strategies BY GEORGE JUHN & ALEX MOGILEVSKY, CEATI International Aging of the electrical transmission infrastructure has resulted in an increased need for maintenance to ensure a reliable supply of power to customers who have higher expectations than...

Aging Infrastructure and Grid Modernization

Asset and risk management for electric utilities BY SIRI VARADAN, UISOL, & SERGE VANASSE, Clevest Aging transmission and distribution (T&D) infrastructure is a critical issue for electric utilities, resulting in the need for utilities to make decisions regarding the replacement, repair,...


Duke Energy Florida Adds 300 MW with Four New Solar Projects

Duke Energy Florida has announced plans to build four new utility-scale solar energy facilities across the state, aimed at adding 300 megawatts (MW) of renewable energy to the grid. This expansion is part of the company’s broader strategy to increase its solar generation capacity and...

DOE Prioritizes Baseload Generation

In a strategic move to tackle the growing electricity demand and bolster energy security, the U.S. Department of Energy (DOE), under Secretary Chris Wright, has announced plans to focus on expanding baseload and dispatchable power generation. This shift in priorities, outlined on January 5, 2025,...

FERC Complaint Targets Duke, PJM Transmission Planning

A coalition of large energy consumers and ratepayer advocates has filed a complaint with the Federal Energy Regulatory Commission (FERC), urging the agency to prohibit transmission owners from independently planning "local" transmission projects exceeding 100 kilovolts (kV). The coalition argues...

Louisiana Industries Push for Faster Renewable Energy Transition

Louisiana, known for its robust oil and gas industry, is experiencing a significant shift as some of its largest industries express frustration over delays in the state’s renewable energy transition. These major players are pushing for accelerated development and implementation of renewable...

Overhead T&D, Direct Current Technology

Direct current (DC) is the preferred technology for moving large amounts of power across long distances. DC results in overall higher efficiency and reliability than an equivalently-sized alternating current (AC) system moving the same amount of power. The Advantages of DC More efficient: Over long...

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