Gamesa, a Spanish wind turbine manufacturer, has hammered out its first-ever U.S. union contract with the United Steelworkers (USW). Workers at two Gamesa facilities in Pennsylvania voted to approve their first contract with 80 percent in favor of it. The agreement lays the foundation for a stronger partnership between one of the world’s largest wind turbine manufacturers – and the only one that makes its blades, nacelles, and towers all in the U.S. – and the 850,000 member union.

The three-year contract raises worker salaries by more than 10 percent, as well as provides for bonuses and benefits for roughly 600 employees. Michael Peck, a Gamesa spokesman, called the contract “a world-class agreement." Tom Conway, USW international vice president, agreed:

“Our union is proud to partner with Gamesa to further grow their domestic manufacturing base and promote wind energy as a source of clean, renewable energy and good jobs.”

Gamesa and other wind power companies have been lured to Pennsylvania by a host of tax incentives and the adoption of a Renewable Energy Standard that doubled the state's renewable energy use to 20 percent. PA is one of the top green power purchasers in the nation according to the Environmental Protection Agency.

The United Steelworkers have been longtime supporters of wind power; they and the Sierra Club founded the Blue Green Alliance that advocates for a cleaner environment and good jobs. USW also co-founded the Apollo Alliance, a coalition of labor, business, and environmental organizations supporting clean energy and a strong economy.

Bucks County Courier Times
Gamesa Corporation
Philadelphia Inquirer, via Topix
Renewable Energy Access
United Steelworkers
The Green Options Interview: Van Jones

A seemingly simple alteration a wind turbine blade’s traditional shape could result in huge improvements in efficiency.

WhalePower Corporation out of Toronto, Canada has designed a turbine blade with rounded, teeth-like bumps along the leading edge. The company’s name is a nod to the humpback whale, whose flipper was the inspiration for the design.

The agility of the humpback whale is astonishing, given that they can be over 50 feet long, weigh nearly 80,000 pounds, yet move quickly and tightly in the water. One of the animal's advantages, according to scientists, is the unique row of bumps or “tubercles” along the leading edge of their flippers that dramatically increase the whale’s aerodynamic efficiency. Specifically, researchers found a 32 percent lower drag and 8 percent improvement in lift from a flipper with a serrated edge compared to a smooth one.

Businessman Stephen Dewar heard about the humpback research and contacted one of the scientists involved, Professor Frank Fish of West Chester University in Pennsylvania. After a few meetings, they enlisted the help of some local engineers and formed WhalePower, taking a cue from Mother Nature and modeling their blade design after the whale’s flipper.

WhalePower claims that their turbine design can capture more wind energy at much lower speeds than traditional designs. The channels created by the teeth at the blade's edge cause separate wind streams to accelerate across the surface of the blade in rotating flows. These “energy-packed” vortexes increase the lift force on the blade. For example, Dewar told the Toronto Star that this design produces the same power at 11 miles per hour that one would expect at 18 miles per hour. Furthermore, he claimed these channels prevent airflow from moving along the span of the blade and past the tip, which can create noise, instability and a loss of energy. By keeping the air flow nicely channeled, more wind is captured and noise is reduced.

Dewar sees this “biomimicry” design – the fusion of biology and engineering – reaching beyond wind power.

“’This changes the game,’ says Dewar, adding that any system using a fan or turbine could also benefit from the new design. This includes everything from better turbines for hydroelectric generation to residential ceiling fans that use less electricity. ‘If we've got what we think we've got, then the range of applications is staggering.’”

The Ontario Centres of Excellence and the Ontario Power Authority have contributed over $60,000 USD for early research and to encourage collaboration with a wind engineering group at the University of Western Ontario. The next and arguably most crucial step to commercial production is independent, third party verification of the blade’s performance.

Toronto Star
Wikipedia

Cross posted at Maria Energia