America's power grid jalopy in need of engine overhaul
NEW YORK — America's power grid is like an old car.
It gets the job done, even if its performance is slipping. But the repair bills go up every year, and experts say only a major overhaul will reverse its decline.
An Associated Press analysis of utility spending and reliability nationwide found electric customers are spending 43 percent more than they did in 2002 to build and maintain local electric infrastructure. Since then, power outages have remained infrequent; but when the lights do go out, it takes longer to get them back on.
Neither the spending nor the reliability trends are dramatic on their own. But experts say the combination is revealing: It suggests the extra money from electric customers is not being spent wisely — or that utilities are not investing nearly enough to upgrade fragile equipment that is increasingly threatened by major storms.
“The electric system is the critical linchpin of our society, and we are operating the overall system closer to the edge,” said Massoud Amin, a grid security expert and professor of electrical and computer engineering at the University of Minnesota.
The diminishing returns on investment reflect several trends: The grid is getting old, making it more expensive to maintain service at current levels of reliability; day-to-day weather and major storms have become more extreme, meaning wires, poles and transformers have to be replaced more often; and when utilities replace aging or broken equipment, they don't always upgrade to modern technologies common in other industrialized nations.
When utilities spend on equipment, regulators allow the companies to pass those expenses on to customers. In recent years, this portion of customer bills — the cost of delivering power — has been rising and pushing bills higher, even though the cost of the power itself has fallen dramatically.
With the help of Ventyx, a software and data services firm that works with electric utilities, and the utility consulting firm PA Consulting Group, the AP compared reliability statistics with the spending of 210 utilities across 24 categories of local distribution equipment.
In 2011, the most recent year for which annual data are available, the average electric customer was without power for 112 minutes, according to PA Consulting. That's a 15 percent increase since 2002 and the highest level in 10 years. The number of outages decreased slightly, from an average of 1.2 per year to an average of 1.1, but that statistic has shown no improvement since 2004.
Over that same period, annual spending per customer on local distribution equipment and maintenance rose about twice as fast as the rate of inflation, from $163 to $232, according to Ventyx.
The grid — an interconnected web of power plants, substations, transformers and wires spanning the continent — is often described as the world's biggest machine. Within it, there are three major regional grids — Eastern, Western and Texas. And within those are thousands of local grids controlled by hundreds of different companies.
Because of this, and because the geography is so diverse, reliability varies wildly.
In parts of the West, where vegetation is sparse and thunderstorms are rare, outages can be extremely rare, too. In dense urban environments, where power lines are underground, customers can go years without losing power. In much of the Northeast and Southeast, where storms are common and vegetation is dense, customers often must survive without power for a few days every year.
Despite higher levels of spending over the past decade, service is getting no better, and evidence is mounting that it may be getting worse. Experts say this is a sign that the grid is less stable and in need of significantly more — and smarter — investment.
Every day, 500,000 Americans lose power for an hour or more, Amin said. Outages cost the economy $80 billion to $188 billion per year.
Some power failures are unavoidable. But others are not, and experts say shockingly low-tech equipment is to blame. Across the country, some utilities don't know if a customer has lost power unless that person calls to complain. Many utilities still rely on paper maps of their systems that become outdated quickly. In short, they struggle to find and repair problems, never mind preventing them.
It's “uncomfortably common” for utilities not to know exactly where their equipment is, or how it's laid out, said John Simmins, manager of EPRI projects that showcase a new generation of digital equipment called the “smart grid,” which is designed to better manage utility systems. Smart grids have sensors that can sniff out problems with equipment, even before it fails, offering a chance to make repairs before an outage.
But the old analog equipment has worked well enough for decades, and utilities are often reluctant to try new things for fear they will be penalized by regulators if the improvements don't work as hoped.
“From the utility's perspective, the safest thing they can do to get their money is to do what they've always done,” said Rich Sedano, a former Vermont regulator who directs a nonprofit advisory group called the Regulatory Assistance Project.
Promoters of the smart devices say the new technology, if implemented, could lead to a wave of improvements the same way automatic switches strengthened reliability in the 1950s.
Jay Apt, a professor at Carnegie Mellon University and director of the school's Electricity Industry Center, said money could be better spent ensuring that communities can function better when the power goes out. That could mean installing backup power equipment in mass transit systems, police stations, gas stations, apartment buildings and grocery stores.
Whether it's better to protect the grid or help customers endure blackouts, it all costs money that nobody wants to spend, even if it might reduce costs and frustration.
“Every time you put a rate increase through,” said Seth Hulkower, a former Long Island Power Authority executive, “customers go crazy.”
Jonathan Fahey is a reporterfor The Associated Press.