To deal with the ongoing transformations in the power sector, thanks to the induction of renewable energy and other technological interventions, the role of market-based electricity transactions are going to get more crucial in the near future, PK Pujari, chairman, Central Electricity Regulatory Commission (CERC), said on Wednesday. The share of long-term power purchase agreements (PPAs) in power contracts will gradually reduce going forward and a number of discoms would get a partial relief as a number of 25-year tenure of PPAs reach their end, Pujari added while speaking at a discussion panel organised by the India Energy Forum.