Monthly Archives: July 2009

PUE Reconsidered – AFCOM Regional Meeting

Data Center Efficiency Solutions Consultant – Henry Hsu – Presented an insightful take on the utility and the limitations of Power Usage Effectiveness (“PUE”) as a data center efficiency metric. His thought leadership presentation covers: Historical Basis for PUE – … Continue reading

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Energy Resource Library – Xcel Energy

Xcel Energy is a leading electric company with regulated operations in 8 Western and Midwestern states including – Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas and Wisconsin. They have created an energy resource library with information on … Continue reading

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Energy Efficiency Rebate & Incentive Database

The US Department of Energy funds the National Renewable Energy Laboratory to administrate a Database of State Incentives for Renewable and Efficiency Programs “DSIRE”. DSIRE is the most comprehensive source of information on state, local, utility and federal incentives and … Continue reading

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Active Power and Apparent Power

Apparent Power is the Total Power Flowing When electrical power in an AC system flows to a load (a computer, motor, lighting, cooling, etc.) all of the power is not necessarily absorbed and used to perform useful work – a … Continue reading

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Carbon Cap and Trade Bill Passes

It was a historic moment when the house passed the carbon cap and trade bill on June 26th. This is confirmation of a major shift in US policy on the topic. The following post explains the certain outcome you need … Continue reading

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