1. On page 53 of the report, it is mentioned that energy consumption reduced from 4971.13 Million kwh (2015-2016) to 4886.83 Million kwh (2016-17).

2. Hence computing, the reduction in energy consumption is equal to 84.294 Million kwh

3. Now 1 Gigajoule=277.8 kwh

4. Therefore converting 84.294 Milion kwh we get 303458.4 Gigajoules