Debut of promising fuel-cell tech light on details

SAN JOSE, CA -- A richly funded Silicon Valley clean-energy startup is keeping critical parts of its business plan secret as it launches its first product to international attention.

The company, Bloom Energy, didn't offer many new details Wednesday about how it plans to make its promising fuel-cell technology affordable enough for regular people to buy for their homes.

That's an important question because the company's product -- a box of fuel cells that looks like a giant filing cabinet -- currently costs $700,000. Corporations are the first customers, but Bloom wants to cut the price to a few thousand dollars and put it in homes.

The CEO, K.R. Sridhar, said only that that could take a decade or more as the technology gets better and prices come down.

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