NEW DELHI: India is planning to increase its exploration acreage to 0.5 million sq. km by 2025 and 1.0 million sq. km by 2030, said petroleum minister Hardeep Singh Puri on Saturday.Puri, speaking at an ONGC (Oil and Natural Gas Corporation) ceremony held on Sagar Samrat, said India’s energy demand is likely to grow at about 3% per annum by 2040, as against the global rate of 1%. Further, 25% of the global energy growth between 2020 and 2040 is going to come from India due to its fast-growing economy, he said.