A truly transformational effort will require strong and leading participation from local actors. : Editor’s note: This essay was contributed by one of the NGOs that make up the Renewable Energy Buyers Alliance (REBA), a consortium dedicated to growing large buyer demand for renewable power and helping utilities and others meet it. You can find the other articles here. REBA’s next annual summit will be Oct. 14-16 in Oakland, California ahead of VERGE 18. Companies are the world’s largest energy users. With that comes enormous opportunity — in addition to responsibility.