Commercial Energy Calculator The Commercial Calculator provides estimates of energy usage and costs based on your inputs. It also presents a comparison of three efficiency levels for each calculation.		Commercial Energy Systems This extensive library provides indepth information on various commercial energy systems, building design, and energy technologies.
	Understanding Demand Learn how your demand for electricity impacts your electricity cost. This set of animations, text, and graphics explains the concept of demand and how it effects your monthly bills.		Special Purpose Calculators These calculators address specific topics and technologies.

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