Clearway Completes Its First Wind Repowering Project in Texas

SAN FRANCISCO – Clearway Energy Group (“Clearway”), through its ownership interest in Repowering Partnership II LLC, has completed its first wind repowering project. Elbow Creek, a 122-MW wind farm located in Howard County, Texas, originally completed in 2008, began post-repowering operations in November. Construction for the repowering was led by Mortenson and turbine equipment was provided by Siemens Gamesa.

“The completion of this project is a major milestone for all of us at Clearway and a testament to the strength and promise of the flourishing Texas wind industry,” said Craig Cornelius, CEO of Clearway Energy Group. “We are grateful for the support and expertise of our partners, Siemens Gamesa and Mortenson, in completing this project and investing in the Lone Star State’s clean energy future.”

“Since entering the wind energy market in 1995, our experience has led us into this next phase of repowering turbines to extend their life cycle,” said Tim Maag, Vice President and General Manager at Mortenson. “We were delighted to be selected by Clearway to repower the Elbow Creek Wind Project. To date, we have completed 34 new wind energy projects in Texas. With the completion of Elbow Creek, we have repowered four projects in the state.”

“Repowering projects with updated technology offer an opportunity to not only extend the life of a wind project but also extend the benefits to local communities. We are proud to have contributed the turbines to the Elbow Creek wind project and to work with Clearway,” said Jose Antonio Miranda, Onshore Americas CEO, Siemens Gamesa Renewable Energy.

Repowering extended the life of Elbow Creek and lowered operations and maintenance costs through enhancements with modern turbine equipment. Repowering Elbow Creek created more than one hundred jobs during construction and generated hundreds of thousands of dollars in local spending. The National Renewable Energy Laboratory estimates that in the United States, annual repowering investments could reach $25 billion by 2030.

For more information, visit www.clearwayenergygroup.com.

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About Clearway Energy Group

Clearway Energy Group is accelerating the world’s transformation to a clean energy future. With more than 4.1 gigawatts of solar and wind energy assets in 25 states and a development pipeline across the country, we are offsetting the equivalent of nearly 9 million tons of carbon emissions for our customers. The company is headquartered in San Francisco, CA with offices in Carlsbad, CA; Scottsdale, AZ; Houston, TX; and New York, NY. For more information, visit www.clearwayenergygroup.com.

About Siemens Gamesa Renewable Energy

Siemens Gamesa is a global leader in the wind power industry, with a strong presence in offshore, onshore and services. Through its advanced digital capabilities, the company offers one of the broadest product portfolios in the industry as well as industry-leading service solutions, helping to make clean energy more affordable and reliable. With over 90 GW installed worldwide, Siemens Gamesa manufactures, installs and maintains wind turbines, both onshore and offshore. Its backlog stands at €23.6 billion. The company is headquartered in Spain and listed on the Spanish stock exchange (included in the Ibex-35 index).

About Mortenson

Mortenson is a U.S.-based, top-20 builder, developer, and engineering services provider serving the commercial, institutional, and energy sectors. Mortenson’s expanding portfolio of integrated services helps its customers move their strategies forward, ensuring their investments result in high-performing assets. The result is a turnkey partner, fully invested in the business success of its customers.

Founded in 1954, Mortenson has operations across the U.S. with offices in Chicago, Denver, Fargo, Iowa City, Milwaukee, Minneapolis, Phoenix, Portland, San Antonio, Seattle, and Washington, D.C. For additional information, visit www.mortenson.com.