The Real Cost of Major Storms For Utility CompaniesLowell Corporation
Utility companies always try to update their utility equipment to avoid significant outages during inclement weather. But have they done enough?
The Effects of Hurricane Katrina
When Hurricane Katrina’s punishing storm surge plowed ashore, it swamped seven of the Coast Electric Power Association’s substations, vital to powering thousands of Mississippi homes and businesses. The facilities are now fully operational, though they remain at the same elevation. Today, they are just as vulnerable to catastrophic hurricanes.
Such storms are a growing threat. An Associated Press analysis of industry data found that severe weather is the leading cause of significant power outages on the nation’s power grid. According to the AP, the number of weather-related power outages has climbed over the last decade. The most significant spikes were in 2008 and 2011.
That leaves Coast Electric and other utilities across the country struggling to balance customer costs with the need for improvements. To counter the rising number of violent storms, floods, and droughts threatening the U.S. power grid‘s core infrastructure, they need to act quickly.
The eye of Katrina ripped through the coastal city of Waveland in late August 2005. It leveled neighborhoods, destroyed infrastructure, and knocked out power to Coast Electric’s entire coverage area.
Rebuilding After Katrina
Facing sweltering summer heat and $110 million in damage, Coast Electric had to pick up the pieces. The small nonprofit cooperative focused on restoring power to customers as quickly as possible. They repaired the old substations that flooded to pre-storm conditions. At the time, raising or moving them elsewhere would have been impractical.
“We’re only a few feet above sea level right here,” Brown said during a recent visit to a Waveland substation.
Coast Electric made some crucial improvements post-Katrina; it used a large mound of dirt to elevate a new substation 18 feet above sea level. But raising the old substations that flooded would cost Coast’s 68,160 customers millions of dollars, Brown said.
Hundreds of utility companies own and manage the equipment that makes up the U.S. power grid. They range from large investor-owned companies like New York’s Consolidated Edison to small municipal utilities and cooperatives like Coast Electric. Each faces a unique set of challenges.
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The Continuing Battle Against Hurricane Season
When Hurricane Irene hit the Northeast in 2011, it marked the first time in Con Ed’s history that more than 200,000 customers lost power from a storm. Superstorm Sandy struck just 14 months later, quickly followed by a devastating Nor’easter, leaving 1.1 million customers in the dark.”It was clear to us that weather patterns were changing fundamentally. Severe weather events were becoming more frequent and devastating,” Allan Drury, a Con Ed spokesman, said in an email.Con Ed is spending $1 billion to harden its system. Drury said the utility could afford all the equipment upgrades it wanted.
The test will be when the next powerful storm hits.
The Lasting Consequence of Power Outages
No doubt improvements are costly for utility companies and their customers, but so are outages. A 2013 report by the White House said weather-related blackouts cost the U.S. economy an annual average of $18 billion to $33 billion, adjusted for inflation, from 2003 to 2012.
They can also be deadly. The report said 50 deaths in Sandy’s aftermath were due to power outages. This figure included senior citizens who died from hypothermia and others poisoned by carbon monoxide from generators.
Funds from the Federal Emergency Management Agency are available to help utilities rebuild after catastrophes. The Mississippi cooperative received about $100 million in FEMA public assistance grants. However, the money allowed it only to repair the flooded substations to pre-storm conditions. The flooded substations powered about 6,500 accounts, including some in Coast Electric’s most populated coverage areas. The co-op provides power to customers across most three counties, from urban coastal areas to rural communities farther inland.
Utility Companies and FEMA
FEMA offered more funds that would help to raise the flooded substations. Still, the co-op did not apply. Brown said that cost-effectiveness assessments and environmental considerations would have taken too much time and would have delayed getting the lights back on.
Once the work began, Coast Electric could not change the grant’s terms to improve the sites, Brown said. The seven rebuilt substations in Katrina’s area retained the same elevation — when scientists were already warning of rising sea levels and the threat of more frequent severe weather.
A study published in Risk Analysis in May found that the U.S. power grid is increasingly blacking out when hit with severe weather. The infrastructure lags behind other developed nations in terms of reliability.
“I think it is an open question as to whether utilities are investing enough in the infrastructure needed to harden the system against storms and on simple but effective things like tree trimming,” said Roshanak Nateghi, the report’s lead author and a professor at Purdue University.
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The California Droughts
Regulators in drought-stricken California ordered the state’s investor-owned utilities to follow regulations. The goal was to set priorities for inspecting and removing dead and sick trees. Climate change has facilitated and exacerbated numerous wildfires” that have damaged and threatened their facilities. Regulators said utilities could ask the California Public Utilities Commission for additional funds to address wildfire threats.
In September, the wildfire killed two people, destroyed 475 homes, and scorched 70,000 acres in the tinder-dry Sierra Nevada foothills. Homeowners and their attorneys asked whether San Francisco-based Pacific Gas & Electric Co. did enough to clear dry trees flanking its power lines.
Barry Anderson, a PG&E vice president, acknowledged mid-September that the fire could have originated when a pine tree “may have contacted a PG&E line in the vicinity of the ignition point.”
More than 50 victims have sued PG&E and its tree-trimming contractors for property damage. One recently filed suit also blames the companies for the death of an 82-year-old man in Mountain Ranch, California, claiming the companies “showed a conscious disregard for human life.”
The Rising Cost of Wildfires
PG&E spokesman Joe Molica said the company had spent $260 million to prepare for extreme weather and drought. This year alone, he noted PG&E hired 350 arborists and 19 foresters to inspect and remove dead trees and brush near the utility’s 134,000 miles of lines, bought cameras for fire lookout towers, and funded rural fire-safe councils.
State fire officials are still investigating the cause of the blaze. Inspectors claimed it was the second-most devastating fire in a drought year. More than 6,000 wildfires are about one-third more than the recent national average.
Nationally, fragmented data collection makes it difficult to gauge whether utilities have adequately hardened their systems against more extreme weather. Many companies are not required to provide regulators with data about how often outages occur or how long they last.
Utility Companies and Climate Change
AP largely adopted the methodology used by the independent research organization Climate Central to chart the number of weather-related outages. Climate Central’s previous 2003 to 2012 study found that weather-related outages were becoming more frequent.
In a study published in August, researchers at Lawrence Berkeley National Laboratory and Stanford University surveyed a sample of 195 utilities. They found that from 2000 to 2012, increasingly severe weather led to longer-lasting outages.
Utilities spent $20.1 billion in 2012 to upgrade their distribution infrastructure. Even so, researchers found that the number of minutes customers have been without power has increased.
“A significant number of the minutes that customers experience having their lights out are still the result of big storms,” said Joseph Eto, the lead author and researcher at Lawrence Berkeley National Laboratory.
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