article thumbnail

Walmart Broadens ROI for Green Power

Harvard Business Review

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. First, 75 percent of Walmart's California stores now have "some kind of renewable energy system." EPA's latest list of the top 50 renewable energy buyers. look at where the investment gets us.

ROI 13
article thumbnail

Two Forces Moving Business Closer to Climate Action

Harvard Business Review

It’s a perfect storm bringing us to two important tipping points: one of belief and commitment to action, and one of economics. This week, an important coalition of coalitions, We Mean Business , launched with its own report and commitment by large organizations to recognize the reality of climate science and the ability to act on it.

IRR 8