From the Manager’s Desk: The new electric grid

Above image caption: With thousands of miles of power lines, nearly 200,000 utility employees and 7,300 power plants, America’s electric grid and all its parts must work together to keep power flowing smoothly. 

America’s electric grid is often called the most complex machine in the world. That’s not a stretch when you think about what it does: it runs your refrigerator and charges your phone, all from a ray of sunshine, a lump of coal, falling water or a prairie breeze.

In between those starting and ending points are 160,000 miles of high-voltage transmission lines, millions of miles of low-voltage power lines, 7,300 power plants, nearly 200,000 electric utility employees, thousands of electrical substations and transformers that adjust voltage for the cross-country trip along transmission lines, then back down before it enters your house –– and all these parts must work together to keep power flowing safely. In addition, this complex network is adapting to weather patterns, increasing cybersecurity threats, consumer expectations and additional decentralized power sources like rooftop solar panels.

For all its complexity, the electric grid can be described in three major parts: a power source (like a natural gas plant or wind turbine); the wires and equipment that deliver power; and a home or business that receives the power.

To understand the grid more deeply, here are some ways it’s adapting to the world’s new realities.

Resilience in the face of more severe weather

Last year was the busiest recorded hurricane season along the Atlantic Coast. Wildfires are increasingly intense, especially in the west, and ice storms and cold weather surprised the South this winter.

These changes call for new ways to make sure the lights stay on.

Electric utilities are increasing grid resilience by integrating weather forecasting with other smart technologies that monitor electric current and analyze how to respond.

By knowing how weather will affect power equipment, an electric co-op can stage crews to quickly respond to outages and redirect the flow of electricity to minimize the duration of a power outage.

Strengthening cyber safety

Cybersecurity measures have become standard operating procedure for utilities to protect against cyber attacks. Electric co-ops and other utilities work closely with the U.S. Department of Homeland Security to monitor and strengthen defenses.

Electric co-ops also urge consumer-members at home to protect themselves from hackers. When devices like printers and smart TVs connect to the internet, that actually makes them part of the electric grid.

Utilities keeping up with the change

Large fields of wind turbine farms and solar power rrays require building transmission lines to new locations, and planning for a kind of power that might only operate when the sun shines or the wind blows. These changes are necessary and helpful, but they are also expensive.
Annual spending on the U.S. transmission system has increased from $9 billion a year in 2002, to $40 billion in 2019.

But that spending is paying off.

In 2017, Americans experienced about eight hours of power interruptions, according to the Energy Information Administration. By 2019, that was down to five hours.

We will continue to work to make sure we have a secure and reliable electric grid. It is because of investment in the grid that we can fulfill our mission of providing reliable electricity to you, safely and affordably.

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