WASHINGTON — A major U.S. power company has pleaded guilty to killing eagles and other birds at two Wyoming wind farms and agreed to pay $1 million as part of the first enforcement of environmental laws protecting birds against wind energy facilities.
Until the settlement announced Friday with Duke Energy Corp. and its renewable energy arm, not a single wind energy company had been prosecuted for a death of an eagle or other protected bird — even though each death is a violation of federal law, unless a company has a federal permit. Not a single wind energy facility has obtained a permit.
The Charlotte, N.C.-based company pleaded guilty to killing 14 eagles and 149 other birds at its Top of the World and Campbell Hill wind farms outside Casper, Wyo. All the deaths, which included golden eagles, hawks, blackbirds, wrens and sparrows, occurred from 2009 to 2013.
“Wind energy is not green if it is killing hundreds of thousands of birds,” said George Fenwick, president of the American Bird Conservancy, which supports properly sited wind farms. “The unfortunate reality is that the flagrant violations of the law seen in this case are widespread.”
There could be more enforcement. The Fish and Wildlife Service is investigating 18 bird-death cases involving wind-power facilities, and about a half-dozen have been referred to the Justice Department.
Wind farms are clusters of turbines as tall as 30-story buildings, with spinning rotors as wide as a passenger jet’s wingspan. Though the blades appear to move slowly, they can reach speeds up to 170 mph at the tips, creating tornado-like vortexes. Eagles are especially vulnerable because they don’t look up as they scan the ground for food, failing to notice the blades until it’s too late.
“No form of energy generation, or human activity for that matter, is completely free of impacts, and wind energy is no exception,” the American Wind Energy Association said in a statement.
The case against Duke Energy and Duke Energy Renewables Inc. was the first prosecuted under the Migratory Bird Treaty Act against a wind energy company. The Obama administration has championed pollution-free wind power and used the same law against oil companies and power companies.
“In this plea agreement, Duke Energy Renewables acknowledges that it constructed these wind projects in a manner it knew beforehand would likely result in avian deaths,” Robert G. Dreher, acting assistant attorney general for the Justice Department.
Environment and Natural Resources Division, said in a statement.
Duke has a market capitalization of nearly $50 billion.
“We deeply regret the impacts of golden eagles at two of our wind facilities,” Greg Wolf, president of Duke Energy Renewables, said in a statement. “Our goal is to provide the benefits of wind energy in the most environmentally responsible way possible.”
A study in September by federal biologists found that wind turbines had killed at least 67 bald and golden eagles since 2008. Wyoming had the most eagle deaths. That did not include deaths at Altamont Pass, an area in northern California where wind farms kill an estimated 60 eagles a year.
An investigation in May by The Associated Press revealed dozens of eagle deaths from wind energy facilities, including at Duke’s Top of the World farm, the deadliest for eagles of 15 such facilities that Duke operates nationwide.
In 2009, Exxon Mobil pleaded guilty and paid $600,000 for killing 85 birds in five states. The BP oil company was fined $100 million for killing and harming migratory birds during the 2010 Gulf oil spill. And PacifiCorp, which operates coal plants, paid more than $10.5 million in 2009 for electrocuting 232 eagles along power lines and at its substations.
The wind farms in Friday’s settlement came on line before the Obama administration drafted voluntary guidelines encouraging wind energy companies to work with the Fish and Wildlife Service to avoid locations that would impact wildlife. Companies that choose to cooperate get rewarded because prosecutors take it into consideration before pursuing prosecution.
Once a wind farm is built, there is little a company can do to stop the deaths. Some companies have tried using radar to detect birds and to shut down the turbines when they get too close. Others have used human spotters to warn when birds are flying too close to the blades. Another tactic has been to remove vegetation to reduce the prey the birds like to eat.
As part of the agreement, Duke will continue to use field biologists to identify eagles and shut down turbines when they get too close. It will install new radar technology, similar to what is used in Afghanistan to track missiles. And it will continue to voluntarily report all eagle and bird deaths to the government.
The company will also have to apply for an eagle take permit and draft a plan to reduce eagle and bird deaths at its four wind farms in Wyoming.
Duke’s $1 million will be divided. The fine — $400,000 — will go into a wetlands conservation fund. The state of Wyoming gets $100,000. The remainder will be used to purchase land or easements to protect golden eagle habitat and for projects aimed at minimizing interactions between eagles and wind turbines in Wyoming.
Associated Press writer Mead Gruver in Cheyenne, Wyo., contributed to this report.
Follow Dina Cappiello on Twitter at www.twitter.com/dinacappiello
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