| PTC Series A | -- | -- | [ICRA]AAA(SO) | -- |
| Subordinated Debentures | -- | -- | [ICRA]AAA(Stable) | -- |
| Non-Convertible Debentures | -- | -- | [ICRA]AAA(Stable) | -- |
| Commercial Paper | [ICRA]A1+ | -- | -- | -- |
| PTC Series A | -- | -- | [ICRA]AAA(SO) | -- |
| PTC Series A | -- | -- | [ICRA]AAA(SO) | -- |
| PTC Series A | -- | -- | [ICRA]AAA(SO) | -- |
| PTC Series A | -- | -- | [ICRA]AAA(SO) | -- |
| PTC Series A | -- | -- | [ICRA]AAA(SO) | -- |
| PTC Series A | -- | -- | [ICRA]AAA(SO) | -- |