What are the solar and battery rebates worth in 6616, Latham?
6616 covers Latham, in Western Australia. It sits in STC Zone 2 (rating 1.536), so a 6.6 kW solar system installed in 2026 creates 50 certificates, about $1,850 off the quote, and a 10 kW system 76 certificates, about $2,812. The federal battery discount is about $252 a usable kWh until 31 December 2026. Western Australia's own programs are in the table below. Checked 23 September 2026.
Federal solar certificates in Zone 2, by system size.
Certificates = kW × 1.536 × years left in the scheme, rounded down, at $37 a certificate. Every installer sets its own price per certificate, so the count is what should match your quote. To check a quote with its own price, use the STC calculator on Rebate Calculator.
| System size | Certificates in 2026 | Value in 2026 | Certificates from 2027 | Value from 2027 |
|---|---|---|---|---|
| 5 kW | 38 | about $1,406 | 30 | about $1,110 |
| 6.6 kW | 50 | about $1,850 | 40 | about $1,480 |
| 8 kW | 61 | about $2,257 | 49 | about $1,813 |
| 10 kW | 76 | about $2,812 | 61 | about $2,257 |
| 13.2 kW | 101 | about $3,737 | 81 | about $2,997 |
| Usable capacity | Value to 31 December 2026 | Value from 1 January 2027 |
|---|---|---|
| 10 kWh | about $2,516 | about $2,109 |
| 13.5 kWh | about $3,397 | about $2,847 |
| 16 kWh | about $3,824 | about $3,206 |
Western Australia programs that stack on top.
| Program | Amount | Conditions | Checked |
|---|---|---|---|
| Western Australia: Residential Battery Scheme rebate | up to $1,300 (Synergy) or $3,800 (Horizon Power) | State share on top of the federal discount; the published combined figure is up to $5,000 or $7,500 on a 10 kWh battery; approved installer; open since 1 July 2025 | 23 September · wa.gov.au |
| Western Australia: Residential Battery Scheme no-interest loan | up to $10,000 | Household income under $210,000; a battery, plus solar or an inverter only when installed with the battery; 3 to 10 years, no interest | 23 September · wa.gov.au |
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Questions people ask about 6616.
Which STC zone is postcode 6616 in?
Zone 2, rating 1.536, on the Clean Energy Regulator's postcode table. That rating times the system size in kW times the deeming years (5 for 2026 installs, 4 for 2027) gives the certificate count, rounded down.
How much is the solar rebate on a 6.6 kW system in Latham?
50 certificates in 2026, about $1,850 at $37 a certificate, taken off the quote by the installer. From 1 January 2027 the same system gets 40 certificates, about $1,480.
Is there a battery rebate in 6616?
Yes, the federal Cheaper Home Batteries discount applies in every state: about $252 a usable kWh on the first 14 kWh for installs to 31 December 2026 (about $2,520 on 10 kWh), stepping down to about $211 a kWh from 1 January 2027. Western Australia adds the programs in the table on this page. The regulator has recorded 0 home batteries in 6616 so far.
Nearby postcodes: 6612 Jibberding · 6613 Buntine · 6614 Maya · 6620 Bunjil · 6623 Bowgada · 6625 Merkanooka. Installation counts from the Clean Energy Regulator; zone from its postcode table; figures are published maximums checked 23 September 2026. Victorian postcodes are under Victoria by postcode.