| Long-term fund-based bank facilities | -- | -- | [ICRA]AA-(Stable) | -- |
| Non-Convertible Debenture | -- | -- | [ICRA]AA-(Stable) | -- |
| PTC Series A1 | -- | -- | Withdrawn | -- |
| PTC Series A1 | -- | -- | Withdrawn | -- |
| Series A1 PTC | -- | -- | [ICRA]AA(SO) | -- |
| Series A PTC | -- | -- | [ICRA]AAA(SO) | -- |
| Series A1 PTC | -- | -- | [ICRA]AA(SO) | -- |
| Series A1 PTC | -- | -- | [ICRA]AA(SO) | -- |
| Series A1 PTC | -- | -- | [ICRA]AA+(SO) | -- |
| PTC Series A | -- | -- | Withdrawn | -- |