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PacifiCorp’s 2025 Plan Focuses on Renewables, Storage, and Extended Coal Use

PacifiCorp, a major utility serving customers across the western United States, has released its 2025 Integrated Resource Plan (IRP), outlining ambitious goals for renewable energy expansion and grid modernization while navigating the challenges of coal phase-outs and shifting federal policies. The plan emphasizes the company’s strategy to add 4.7 gigawatts (GW) of wind and solar capacity and 1.7 GW of energy storage by 2031. However, the utility also faces significant challenges from federal policy changes...

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Electrical Substations

Extend the Life of Your Circuit Breakers

What to ask to ensure proper circuit breaker testing and maintenance

BY ROBERT FOSTER, Megger

Protecting a utility’s assets is essential. There are many different apparatus in electrical substations that need to be protected. The circuit breaker (CB) is designed to stop the flow of electricity and protect not only your expensive assets but human lives as well. The CB lies idle most of the time, allowing current to flow continuously, but when it is called upon to operate, it must trip or open the circuit in a matter of milliseconds. This is why it is imperative to properly test and maintain your circuit breakers throughout their service life. Electricity Today Magazine and Megger provide several questions to ask before, during and after testing medium- and high-voltage circuit breakers.

Q: What type of circuit breaker do I own?

A: There are many types of insulating mediums and designs of...

Electrical Substations Articles

Since 1952 Tallman has been Setting the Standard for Linemen

At Tallman Equipment, we are an employee-owned company that provides tools, equipment, and services for the construction and maintenance of Electrical Transmission and distribution infrastructure. Whether it’s a large, multi-state construction project, managing a storm, or providing power to...
Physical Security & Monitoring

The Copper Theft Pandemic

Around the time of the financial crisis of 2008, precious metals pricing began to change drastically. Beginning in late 2007, a trend of price instability began to be seen for gold, silver, platinum, and (although not a precious metal in the traditional sense), copper. The price of all these metals...
Substation Technologies

Power Factor Testing of Circuit Breakers

Detecting contamination and deterioration in SF6 breakers to ensure longevity BY LINDA NOWAK, Doble Engineering Company The purpose of “Doble testing”, or power factor testing, SF6 (sulfur hexafluoride) circuit breakers is to detect the presence of contamination and/or deterioration of the...