HP :

HP thermal logic - It combines energy efficient design with accurate meas -urement and control without sacrificing performance. Thermal Logic will help save money by optimizing power and cooling for blades. The end result is significant power and cooling savings by reducing total energy, reclaiming trapped power and cooling capacity, and extending the life of the datacenter.
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Sustainable computing - As part of this program, they are upgrading the core sites in a phased approach, with new technology and more efficient use of space. Through this and other energy efficiency initiatives, they reduced absolute energy use from operations by 1% in 2006. That equals savings of approximately 35 million kWh and reduction of the carbon footprint by 18,000 tons of greenhouse gases. HP has set a goal to reduce the combined energy consumption of HP operations and products 20% below 2005 levels by 2010.

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