F12 · STC & BSTC Calculator

STC & BSTC
CALCULATOR

Calculates Small-scale Technology Certificates for Solar PV systems and Battery STCs for battery storage installations under the Small-scale Renewable Energy Scheme (SRES). Battery calculations reflect the Cheaper Home Batteries Program STC Factor per kWh of usable capacity (9.3 Jul–Dec 2025; 8.4 Jan–Apr 2026; 6.8 May–Dec 2026; stepping down to 2.1 by H2 2030), with the capacity taper 100% / 60% / 15% at 14 / 28 / 50 kWh and a 50 kWh eligible cap. Solar and battery STCs are rounded down to whole certificates. Verified against the Clean Energy Regulator entitlements page (cer.gov.au, last updated 30 April 2026); confirm the taper effective date against F2026L00093.

A
Installation Details
Enter the 4-digit Australian postcode where the system will be installed.
Range: 1 July 2025 – 31 December 2030 (SRES scheme window).
B
Solar PV System
Total rated DC power output. Maximum 100 kW under SRES (over 100 kW falls under the LRET). Leave blank if not installing solar PV.
C
Battery Storage System
Usable capacity (not nominal). Nominal must be 5–100 kWh. Only the first 50 kWh of usable capacity is eligible. Leave blank if not installing a battery.
ℹ
Eligibility: battery must be CEC-listed, installed with either new or existing solar PV, grid-connected, VPP-capable, compliant with AS/NZS 5139:2019, and installed by an SAA-accredited installer. Only one battery claim per premises.
Solar PV STCs
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Small-scale Technology Certificates
Calculation Workings
    Battery STCs (BSTCs)
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    Small-scale Technology Certificates
    Calculation Workings
      Combined Total
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      Total Small-scale Technology Certificates
      Solar PV · — · Battery · —
      Facilitation disclaimer
      This calculator enforces only the rules published by the scheme regulators; it does not author its own. The accountable licensed party (the Accredited Person, licensed tradesperson, or retailer) retains full regulatory responsibility for any certificate created or lodged, and certificates cannot be created unless the installed products are on the relevant register when created. Figures are indicative and must be verified against the live registers. Primary sources: Essential Services Commission (VEU) esc.vic.gov.au · Clean Energy Regulator cer.gov.au · Solar Victoria solar.vic.gov.au