Chalk up another giant win for fuel cell maker Bloom Energy.

The Sunnyvale, Calif.-based company, rumored to be flush with new funding, has also just nabbed another big-name customer: eBay.

The online auction powerhouse has announced that it will build a new six-megawatt (MW) Bloom installation at its data center in Utah – making it the country’s largest non-utility fuel cell system. Each of the 30 Bloom Energy cells making up the project (and running on biogas) will generate 1.75 million kilowatt hours (kWh) of electricity annually. With this new clean power source, eBay expects this addition to be grid-independent; with the electric utility grid designated as backup.

“We believe the future of commerce can be greener,” said John Donahoe, President and CEO of eBay Inc. “Technology-led innovation is changing retail and revolutionizing how people shop and pay. We also want to revolutionize how shopping is powered. We are embracing disruptive energy technology and designing it into our core data center energy architecture. Running our data centers primarily on reliable, renewable energy, we intend to shape a future for commerce that is more environmentally sustainable at its core.”

Up until this announcement, Apple had claim to building the country’s largest non-utility fuel cell system with their 4.8-megawatt project in North Carolina. Having eBay join the ranks is yet another tremendous vote of confidence in the technology – and one other large companies are likely watching closely.

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“By being a trail blazer and deploying a brand new, revolutionary architecture to build its new data center, eBay is raising the standard for the entire industry. It is 21st century infrastructure for the industry needs of the 21st century,” KR Sridhar, Principal Co-Founder and CEO of Bloom Energy said in a statement. “Bloom Energy is thrilled to be supporting eBay on this innovative and inspiring large scale project.”

eBay expects their new green data center to come online sometime in 2013.