This book seeks to answer the essential question of the investment-worthiness of green instruments. It is evident that investing in green and energy-efficient firms will be the most profitable choice for wise investors in the years to come. The reconciliation of the social choice for green technology and investors choice for gray technology will be automatically achieved once green firms become more profitable than gray ones, in the Indian context. As there has been very little research done in this area, especially in the Indian context, this book addresses that gap.