This document presents ten “big ideas" to make the energy efficiency sector bankable in India. All of the ideas are practical and implementable in the immediate term; they do not require large executing budgets, but they do require technical expertise, political will and persistent follow up, according to the authors. The ideas are also multi-disciplinary in that they provide solutions to prohibitive perceptions of risk in investing and financing energy efficiency, the lack of reliable base lines and poor policy incidence.