TNK CGS battery rebate
4 of 4 models are on the approved list. Rebates below assume installation in May–Dec 2026 at $38 per STC. The earliest listing expiry is 31 December 2027.
Models and rebates
| Model | Usable | Nominal | Listing | Rebate now | From Jan–Jun 2027 | |
|---|---|---|---|---|---|---|
| CGS E5.1L | 5.12 kWh | 5.12 kWh | Approved until 31 December 2027 | $1,292 | $1,102 | Rebate · How long it lasts |
| CGS E10.2L | 10.24 kWh | 10.24 kWh | Approved until 31 December 2027 | $2,622 | $2,204 | Rebate · How long it lasts |
| CGS E15.3L | 15.36 kWh | 15.36 kWh | Approved until 31 December 2027 | $3,800 | $3,192 | Rebate · How long it lasts |
| CGS E20.4L | 20.48 kWh | 20.48 kWh | Approved until 31 December 2027 | $4,598 | $3,838 | Rebate · How long it lasts |
Source: CEC approved batteries list via the Clean Energy Regulator. Always check the exact model number on your quote.
CGS E15.3L: rebate by install date
Questions
Is the TNK CGS eligible for the federal battery rebate?
Yes. 4 of the 4 TNK CGS models are on the Clean Energy Council approved batteries list as at 9 November 2026. The exact model number on your quote must match one on the list on your installation date.
How much is the rebate on a TNK CGS?
For the CGS E15.3L (15.36 kWh usable), about $3,800 if installed in May–Dec 2026, at $38 per STC. The table above shows every model.
What happens on 1 January 2027?
The STC factor drops from 6.8 to 5.7. The same CGS E15.3L would get about $3,192, $608 less. The date that counts is when it's installed and commissioned.