IRR Management Marketing Rate of Return 
Harvard Business Review
FEBRUARY 7, 2012
In essence, Bedore was saying that Walmart recognizes that it can help take the solar market to scale, thus lowering its costs in the future. It also recognizes that, in the meantime, operational managers will gain valuable experience and knowledge about how to optimize the new power systems.
Harvard Business Review
SEPTEMBER 24, 2014
The We Mean Business report cites an internal rate of return of 81% (that’s a ridiculous payback) on energy efficiency in the U.S., and an IRR of 27% for those companies with the most aggressive, science-based goals and actions on climate. Two other pillars of society — government and citizens — need to make headway as well.
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