Corporations are emerging as the surprise package of the global energy transition. A roster of multinationals than now includes Ikea, Apple, AstraZeneca, BMW, Coca Cola, eBay, Goldman Sachs, HP, Johnson & Johnson, Nike, and Starbucks have pledged to source their power purely from renewable energy plants by 2020 or 2030 — indeed, Google and LEGO, ahead of schedule, have passed this milestone already this year.