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Startups say reduced mandates for oil companies make it difficult to finance biorefineries.
The new design could lead to cheaper solar cells.
The financial crisis in Europe is unlikely to derail Brussels’ clean power vision.
Nighttime flight is an important milestone–but solar power is unlikely to transform aviation.
Battery breakthroughs could lower costs and improve performance for electric vehicles and renewable energy storage–but commercializing these new technologies will be challenging.
Utilities are installing devices that make ice at night to replace air-conditioning during times of peak power demand.
A layer of optical fiber bristles doubles the performance of organic solar cells in tests.
The DOE accounts for its spending of stimulus funding.