It does not report amount of energy consumed.
pg. 72
"128 Mn kWh energy saved since 2008"
"9% reduction in energy consumption"
Since the report covers the performance of the company between April 1, 2020 and March 31, 2021. So, we have considered FY2020.
Integrated Report, pg. 59
"In FY21, our total energy consumption was 8,417,372 GJ, comprising direct energy consumption of 7,355,449 GJ and indirect energy consumption of 1,061,924 GJ. "