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(Left) Enclosure for FCCP device. BGE started piloting this solution in August 2022 at a substation with only one dc supply. (Right) A newly installed Multitel box. The FCCP device has a clamp-on current transformer (CT) that can be installed on one wire of the battery dc supply charger cable. Photos courtesy of Baltimore Gas & Electric.
wx-bradwang/Getty Images
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iStock/Gett Images Plus
Wildfire sweeps the mountainside, crossing metal transmission towers.


Photo courtesy of Con Edison.
Overhead Transmission

Creative Underground Transmission Construction in Queens

Nov. 17, 2023
Consolidated Edison considers options for building new underground transmission lines that will carry increasing amounts of renewable energy to customer in New York City.
Duke Energy/file
Duke Energy Harrisburg Substation 638e198cd7b16

Point-to-Point Digital Secondary System Design for a Transmission Substation: Part 2

Oct. 23, 2023
Duke Energy is evaluating the use of a point to point digital secondary system to reduce the amount of copper utilized in traditional substation protection designs.
Courtesy of SMECO
Pole base setting with line energized.
Overhead Transmission

Keeping It Close: A Composite Solution Redefines Compact Design and Construction

Sept. 22, 2023
Creating new standard construction practices to meet critical customer needs.
Photo courtesy of Eolian, L.P.
Aerial photographs of Eolian, L.P.’s Madero & Ignacio battery energy storage facility, a 200 MW/2.5+ hour duration storage system in Texas. Eolian is the developer of PGE’s Seaside battery energy storage system, one of the large-scale storage projects recently procured by PGE.
Distributed Energy Resources

Portland General Electric Bolsters Reliability with Battery Energy Storage Systems

July 28, 2023
Portland General Electric uses battery energy storage systems in its portfolio to balance clean energy with reliability and affordability for customers.
Photo by SDG&E.
SDG&E sought approval from the Federal Aviation Administration to use drones for multiple use cases, including assessments. It was one of the first utilities to receive approval in 2014.

SDG&E Expands Drone Program to Detect Damage

April 12, 2023
The utility takes the use of drones for preventive assessments further by automatically detecting damaged assets from drone-captured images.


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April 14, 2021
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Photo by Minnesota Power
A key element of this effort was the installation of a 500-kV, 1440-MVAR series capacitor bank, deployed in Warroad, Minnesota and provided by Hitachi Energy.
Grid Innovations

Get the Most Out of New, Existing Transmission Infrastructure

July 5, 2022
Minnesota Power builds one of the world’s largest series capacitor banks to improve the overall capacity and efficiency of transmission infrastructure.
Photo by Cleco
Steel poles for the 230kV line from Terrebonne Substation near Houma, La. to Bayou Vista Substation in Bayou Vista, La.
Transmission Reliability

Protecting Against Hurricanes in South-Central Louisiana

April 27, 2022
In three phases, Cleco Power installs US$ 312 million in equipment that can withstand hurricane-force winds up to 130 mph.
Photo by PG&E
Crew cutting trenches running parallel to existing overhead distribution line. PG&E successfully completed undergrounding nearly 4 miles (6.4 km) of overhead power lines in Santa Rosa, California, U.S.
Intelligent Undergrounding

An Inside Look at a PG&E Undergrounding Project

April 19, 2022
The utility completes a 4-mile project in the High Fire Threat District of Santa Rosa, improving safety and electric reliability for 11,000 customers.
Photo by Chris Van Lennep, Dreamstime
New spools of high voltage cable are deployed for installation in an undergrounding project. The lengths of underground lines are subject to certain physical limitations which, when exceeded, cause untimely wear and tear.
Intelligent Undergrounding

To Use Overhead or Underground Transmission? That is (Still) the Question (Part II)

April 5, 2022
The second part of this two-part series examining underground high-voltage ac lines explores cable length limitations.