The following table summarises the contracted providers for 2026-27:
| Ancillary Service Agent | Multiple Frequency Keeping | Backup Single Frequency Keeping | Instantaneous Reserve | Over-frequency Reserve | Black Start | |
|---|---|---|---|---|---|---|
| Expiration | 2027 | 2027 | 2027 | 2026 | 2026 (SI) | 2027 (NI) |
| Contact Energy | ✅ | ✅ | ✅ | ✅ | ✅ |
|
| Counties Power |
|
| ✅ |
|
|
|
| Enel X NZ (also includes Pan Pac) |
|
| ✅ |
|
|
|
| Genesis Energy | ✅ | ✅ | ✅ |
|
| ✅ |
| King Country Energy |
|
| ✅ |
|
|
|
| Manawa Energy |
|
| ✅ |
|
|
|
| Mercury Energy | ✅ | ✅ | ✅ | ✅ |
| ✅ |
| Meridian Energy | ✅ | ✅ | ✅ | ✅ | ✅ |
|
| NewPower Energy |
|
| ✅ |
|
|
|
| Nga Awa Purua (Mercury) |
|
|
| ✅ |
|
|
| PowerNet |
|
| ✅ |
|
|
|
| Tuaropaki (Mercury) |
|
|
| ✅ |
|
|
| Vector |
|
| ✅ |
|
|
|
| WEL Networks |
|
| ✅ |
|
|
|