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As Congress prepares to vote on a comprehensive spending bill, U.S. energy projects such as ARPA-E hang in the balance.
A pilot plant at a winery not only generates electricity, it heats the water.
The flexible composite requires far less silicon than today’s solar cells.
A new design can make more-efficient thin-film solar cells using existing manufacturing equipment.
Inkjet-printed silicon increases solar-cell efficiency.
The economy is slowing the progress of green technologies, but energy efficiency and clean coal continue to attract money.
Quantum-dot cells designed with two layers open potential for higher efficiencies.