According to Arvind Kejriwal, the KG basin was awarded to Reliance in 2000 by the NDA government when the company agreed to supply gas to the NTPC for the next 17 years at $2.34 per unit. But, said Kejriwal, the company revised the rate to $4.25 per unit in 2007 which then finance minister Pranab Mukherjee agreed to as the head of an empowered group of ministers, benefiting Reliance to the tune of Rs.10,000 crore.

"The entire contract was meant to benefit Reliance because ... the cost would be determined by the company, and if the cost increases, so will the profit," he said, adding this was unheard of in business.

Kejriwal alleged that in 2006 then petroleum minister Mani Shankar Iyer was removed and Murli Deora brought in to increase Reliance Industries' capital expenditure from $2.39 billion to $8.8 billion, and to hike gas price from $2.34 per unit to $4.25 per unit.

Later, the company wanted the rate further hiked to $14.2. Jaipal Reddy, who reportedly did not agree to the proposal, was shunted out in Sunday's cabinet rejig, said the activist-politician.