Utilities’ drone plans cleared for takeoff
New FAA rules will aid inspections, boost safety, experts say
Electric utilities across the U.S. are wasting no time taking advantage of new FAA rules authorizing use of drones for commercial purposes.
“We’ve certainly heard from our members that they’re excited about this technology,” said Chris Hickling, director of government relations for the Edison Electric Institute (EEI), the trade group for investor-owned utilities in the U.S.
“They see it as part of building a smarter infrastructure. We see it as an area that’s going to continue to grow.”
More than 20 utilities have already tested unmanned aerial vehicles for inspecting transmission and distribution lines for damage from storms and normal wear and tear, using temporary rules from the Federal Aviation Administration, and are now ready to demonstrate them even more.
Among the early practitioners are Duke Energy, Exelon, National Grid, Southern Company, Pacific Gas & Electric and Xcel Energy.
“You can think of a scenario where in the not-too-distant future utilities could put some of the smaller drones on every single lineworker’s truck, so that when they go to sites, they could zip it up and down a pole to do inspections that would normally require someone climbing all the way up there,” Hickling said in an interview.
The new rules allow companies in the electric power and other sectors to fly drones weighing no more than 55 pounds below 400 feet without obtaining a waiver from the FAA.
The flights would be conducted by certified commercial drone pilots, and they would be limited to ones done within sight of the operators.
That latter restriction would crimp plans by utilities to use drones for longer-distance inspections of power lines, but the agency is providing for waivers of that and other conditions set in the new rules — and companies are already acting on that option.
Among them is Sharper Shape, a Palo Alto, Calif., company that conducts miles-long inspections of power lines in Europe.
Sharper Shape filed waiver requests with the FAA within hours of the agency’s release of the new rules Monday, working with EEI, Xcel Energy, Montana-Dakota Utilities, Minnkota Power Cooperative, a flight operations company called SkySkope and others.
Sharper Shape says its beyondline-of-sight flights can travel up to 20 miles, compared to about 1,500 feet under the new FAA regulations.
“With hundreds of thousands of miles of transmission lines and millions of miles of distribution lines” in the U.S., “not to mention generation assets, there are limits to visual-line-of-sight inspections,” Hickling said.
The longer drone flights can cut costs of inspections for utilities, which typically use helicopters for such operations, and provide them with better images and data, according to Andrew Phillips, director of transmission and substations research at the Electric Power Research Institute, a non-profit organization funded by the electric power industry.
“The (helicopter) fly-bys go quickly because they cost so much per hour,” Phillips said in an interview.
“If you have a hovering operation (with a drone), you can get up there and take detailed pictures.”
Concerns over safety also drive utility interest in drone operations.
“Hovering in a helicopter with people in it is one of the riskier things you can do right next to a transmission line,” he said.
Sharper Shape’s waiver requests would allow the company to fly longer-distance drones in rural areas and lower-populated suburban areas, with an eye toward demonstrating the safety of the operations.
Like other drone operators, Sharper Shape claims features for its vehicles that minimize the risk of accidents, such as redundant communications between drones and their operators.
Tero Heinonen, Sharper Shape’s CEO, said his company would also use licensed aircraft pilots to operate the drones.
Hickling cautions that utilities still have some way to go before they incorporate drones as a regular part of their operations.
“Utilities could put some of the smaller drones on every single lineworker’s truck.” Chris Hickling, Edison Electric Institute