Researchers will analyze and compare hydrogen production from wind power and the electric grid. The hydrogen will be produced through electrolysis—the process of splitting water into hydrogen and oxygen using electricity.
The new wind-electrolysis system will be at NREL's National Wind Technology Center, where hydrogen will be produced, compressed and stored to be used as a vehicle fuel or to generate electricity. The project will compare electrolyzer technologies and researchers will examine issues related to system efficiency, integration, compression, storage, cost and the use of a mixture of hydrogen and natural gas.
"One unique feature of this system is the direct connection between the wind turbine and the electrolyzer, which will make the system more efficient," says Ben Kroposki, senior engineer at NREL's Center for Electric and Hydrogen Technologies and Systems.
"Xcel Energy is the nation's leading wind energy utility with 2,300 megawatts of capacity planned for our system by the end of next year," says Frank Novachek, director of Corporate Planning at Xcel Energy. "This project will help us explore how we can leverage clean, renewable, yet intermittent power sources like wind into a more valuable resource for our utility customers."
The partnership combines NREL's expertise in renewable energy and hydrogen with Xcel Energy's expertise in energy conversion, transmission, distribution and use. Minneapolis-based Xcel Energy plans to add 1,200 megawatts of wind energy capacity in Colorado, Minnesota and Texas by the end of 2007.
Xcel Energy plans to invest more than $1.25 million in the project. NREL and the Department of Energy plan to invest approximately $750,000.
