Macquarie Infrastructure and Real Assets Holdings Pty Limited and NTPC Electric Supply Company Limited are among companies interested in buying some of the renewable energy assets of Infrastructure Leasing & Financial Services Limited people familiar with the matter said. GAIL (India) Limited (NSEI:GAIL) and Solar Energy Corporation of India have also submitted expression of interest to buy the assets, the people said asking not to be identified as the information isn’t public. IL&FS is expecting the sale of wind and solar energy assets to fetch as much as INR 8000 crore ($1.14 billion), one of the people said. Discussions are at an early stage, and may not result in a deal, the people said. A managing director of Solar Energy Corporation and a spokeswomen for NTPC and GAIL didn’t immediately respond to emails seeking comment.