Walmart Broadens ROI for Green Power
Harvard Business Review
FEBRUARY 7, 2012
And the commitment to green energy has helped Walmart take third place on the U.S. We worship internal rates of return (IRR) to our detriment. When it comes to green projects, this narrowly-defined measure of "payback" is particularly destructive. But an internal rate of return cannot be a straitjacket.
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