Sigenergy SigenStack Energy Storage System battery rebate
10 of 10 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 | |
|---|---|---|---|---|---|---|
| SigenStack M2-0.5C-BST-4/48.23 kWh | 46.8 kWh | 48.23 kWh | Approved until 31 December 2027 | $6,498 | $5,434 | Rebate · How long it lasts |
| SigenStack M2-1C-BST-4/48.23 kWh | 46.8 kWh | 48.23 kWh | Approved until 31 December 2027 | $6,498 | $5,434 | Rebate · How long it lasts |
| SigenStack M2-0.5C-BST-5/60.29 kWh | 58.5 kWh | 60.29 kWh | Approved until 31 December 2027 | $6,612 | $5,548 | Rebate · How long it lasts |
| SigenStack M2-1C-BST-5/60.29 kWh | 58.5 kWh | 60.29 kWh | Approved until 31 December 2027 | $6,612 | $5,548 | Rebate · How long it lasts |
| SigenStack M2-0.5C-BST-6/72.35 kWh | 70.2 kWh | 72.35 kWh | Approved until 31 December 2027 | $6,612 | $5,548 | Rebate · How long it lasts |
| SigenStack M2-1C-BST-6/72.35 kWh | 70.2 kWh | 72.35 kWh | Approved until 31 December 2027 | $6,612 | $5,548 | Rebate · How long it lasts |
| SigenStack M2-0.5C-BST-7/84.4 kWh | 81.9 kWh | 84.4 kWh | Approved until 31 December 2027 | $6,612 | $5,548 | Rebate · How long it lasts |
| SigenStack M2-1C-BST-7/84.4 kWh | 81.9 kWh | 84.4 kWh | Approved until 31 December 2027 | $6,612 | $5,548 | Rebate · How long it lasts |
| SigenStack M2-0.5C-BST-8/96.46 kWh | 93.6 kWh | 96.46 kWh | Approved until 31 December 2027 | $6,612 | $5,548 | Rebate · How long it lasts |
| SigenStack M2-1C-BST-8/96.46 kWh | 93.6 kWh | 96.46 kWh | Approved until 31 December 2027 | $6,612 | $5,548 | Rebate · How long it lasts |
Source: CEC approved batteries list via the Clean Energy Regulator. Always check the exact model number on your quote.
SigenStack M2-1C-BST-6/72.35 kWh: rebate by install date
Questions
Is the Sigenergy SigenStack Energy Storage System eligible for the federal battery rebate?
Yes. 10 of the 10 Sigenergy SigenStack Energy Storage System 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 Sigenergy SigenStack Energy Storage System?
For the SigenStack M2-1C-BST-6/72.35 kWh (70.2 kWh usable), about $6,612 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 SigenStack M2-1C-BST-6/72.35 kWh would get about $5,548, $1,064 less. The date that counts is when it's installed and commissioned.