| Year | Unit-I | Unit-II | Unit-III |
|---|---|---|---|
| 2022-23 | 94.93 | 90.45 | 91.71 |
| 2021-22 | 89.40 | 89.35 | 86.94 |
| 2020-21 | 98.23 | 78.82 | 71.17 |
| 2019-20 | 90.13 | 92.72 | 10.05 |
| 2018-19 | 71.43 | 90.20 | 0 |
| 2017-18 | 70.73 | 91.41 | 0 |
| 2016-17 | 89.77 | 85.39 | 0 |
| 2015-16 | 96.14 | 84.71 | 0 |
| 2014-15 | 98.87 | 83.9 | 0 |
| 2013-14 | 86.9 | 98.3 | 61.11 |
| 2012-13 | 91.22 | 92.45 | 52.05 |
| 2011-12 | 99.17 | 99.02 | 67.14 |
| 2010-11 | 92.46 | 93.0 | 92.05 |
| 2009-10 | 88.18 | 92.13 | 75.57 |
| 2008-09 | 74.08 | 62.56 | Force Outage |
| 2007-08 | 92.18 | R&M | -- |
| 2006-07 | 94.92 | R&M | 11.55 |
| 2005-06 | 95.96 | R&M | -- |
| 2004-05 | 99.99 | R&M | 10.83 |
| 2003-04 | 89.10 | R&M | 24.49 |
| 2002-03 | 65.10 | R&M | 6.38 |
| 2001-02 | 95.39 | R&M | 78.02 |
| 2000-01 | 59.81 | 45.38 | 54.6 |
| 1999-2000 | 75.04 | 73.6 | 63.11 |
| 1998-99 | 15.43 | 79.76 | 28.6 |
| 1997-98 | -- | 85.62 | 78.6 |
| 1996-97 | -- | 95.76 | 93.95 |
