The Solar Energy Corporation of India (SECI) has debarred Reliance Power and its subsidiary Reliance NU BESS Limited from participating in future tenders for the next three years due to a fake bank guarantee submitted by the companies in a recent bid for a battery storage project. SECI has also extended the debarment to Reliance Power and its subsidiaries, citing their close relationship and influence on the bidding process. The move is a significant setback for Anil Ambani's business interests.