Greening the Bottom Line, a report from the Sustainable Endowments Institute, highlights the role of green revolving funds — an energy-efficient financing mechanism that colleges, universities, and nonprofits have increasingly adopted as a means to fund sustainability initiatives in their buildings and operations. Authors Emily Flynn and Mark Orlowski show that the cost savings of these funds boost the bottom line for institutions while also replenishing the fund for investment in the next round of green retrofits, thus establishing a sustainable funding cycle.