An EETD Seminar presentation on June 14, 2013, by Dr. Jonathan Koomey, Steyer-Taylor Center for Energy Policy & Finance, Stanford University

In 2010, more than fifty of Art Rosenfeld's friends and colleagues teamed up to propose a new unit of energy efficiency: the Rosenfeld. Its purpose was to allow quick, intuitive, and physically meaningful comparisons between energy efficiency savings and power plants avoided. The Rosenfeld is a unit of of electrical power, equivalent to that delivered to end-users by a 500 MW coal plant operating at a capacity factor of 70%, or 3 billion kWh per year. Assuming the carbon intensity of an average coal plant, that avoided generation equates to 3 million metric tons of carbon dioxide per year. This talk will describe how this useful heuristic came about, and summarize the benefits and potential pitfalls of using it to characterize energy savings estimates.
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