Nextek’s Direct Coupling® Renewable Energy Systems Projected To Save Billions Powering Data Centers


Direct Current-Powering Demonstrates Significant Reduction in Data Center Energy Use
News Media Can Tour Innovative Direct Current Data Center Demonstration Wednesday, June 21st, in Silicon Valley

Berkeley, CA—Data centers are the backbone of the Information Age, providing data storage for websites and databases, and supporting virtually every larger-sized private corporation and institution. Data centers can use 100 times more electricity than a typical office building (on a square foot basis), so energy costs are a major concern.

With financial support from the California Energy Commission, researchers at the Lawrence Berkeley National Laboratory (Berkeley Lab) have teamed with Silicon Valley giants including Sun, Intel, Cisco, and many other industry partners, to demonstrate technologies that have the potential to reduce the operating cost of data centers by billions of dollars a year, while maintaining or even improving reliability, lengthening the life of servers, and saving energy.

The strategy involves eliminating a significant amount of the electrical power lost in traditional data centers through multiple AC and DC conversion steps at today’s data centers. By distributing DC (direct current) instead of AC (alternating current—from the electricity grid) throughout the data center, electrical power losses are reduced, as are the parts needed for conversion. In addition to energy savings, DC distribution reduces facility cooling needs, cuts floor space demand, and increases reliability. The seamless integration of solar, wind or any other renewable power source at the site is an added benefit of this new DC architecture.

The partners have assembled an operating demonstration of DC power strategies. The demonstration will be available for members of the press to view.

When: Wednesday June 21st, 10 am to 12 noon.
Where: The Sun Microsystems facility at Newark, California.

The Berkeley Lab Project team will provide a summary presentation, a tour of the facility, and a question-and-answer session.

RSVP: Those interested in attending the demonstration should call or email Allan Chen at (510) 486-4210,, by June 19th.

More information on DC-powering of data centers:
Berkeley Lab is a U.S. Department of Energy national laboratory located in Berkeley, California. It conducts unclassified scientific research and is managed by the University of California. Visit our Website at
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