Power Exchange India Limited (PXIL) has launched the integrated day-ahead spot (I-DAS) market, a collective transaction that integrates transactions for renewable energy with conventional energy. Through I-DAS, market participants can submit orders for transacting renewable energy as well as conventional power in the same bidding window. The matching algorithm is designed to discover separate prices for both the renewable and conventional energy segments, thus offering an integrated contract to participants. Transactions are executed in a sequential manner with renewable energy being cleared first, followed by the merging of uncleared orders from the renewable energy segment with other orders received in the conventional segment. This provides an opportunity to both renewable energy buyers and sellers to transact power under any segment and thus optimise their portfolio.