Small-scale Technology Certificates (STCs)

Small-scale Technology Certificates (STCs) - Rheem

What are STCs?

Small-scale Technology Certificates (STCs) are a financial incentive to encourage the installation of solar and heat pump water heaters under a Federal Government operated scheme.
STCs are available for eligible solar & heat pump installations in every state of Australia.
One STC is equivalent to a megawatt hour per year (MWh/yr) of electricity displaced.
Solar and heat pump water heaters use the sun's energy to heat water, thereby displacing the use of electricity.

Eligibility Criteria

  • STCs can only be created for solar and heat pump water heaters listed on the Clean Energy Regulator's 'Registers of Solar Water Heaters' and 'Heat Pump Water Heaters'. For solar and heat pump water heaters recently launched, Rheem will pay a financial benefit for these systems until they are published on the register.
  • Installations in new and existing homes are eligible
  • STCs can only be claimed by the owner of the solar or heat pump water heater
  • The country is divided into 4 zones for solar and 5 zones for heat pumps, and the installation location of the water heater is eligible for the STCs indicated in this postcode zone (refer to map below)
  • Effective 30/10/2018 the current price Rheem pays is $33.00 per STC (excludes gst and subject to change).

How many STCs am I eligible for?

Each solar or heat pump system is eligible for a different number of STCs, which relates to the systems' capacity, efficiency and installation location.

Enter your post code in the calculator below. Select either Solar or Heat Pump and choose a model, to find out how many STCs you may be eligible for.

Note: Effective 30/10/2018 the current price Rheem pays is $33.00 per STC (excludes gst and subject to change).

I understand that the Rheem STC Calculator enables me to select and calculate indicative values of known incentives available for nominated water heaters and that this is not a recommendation or endorsement by Rheem that a product selected is suitable for installation in my geographical location.

How to Claim STCs through Rheem

Claiming your STCs is easy. At the time of installation, simply complete a STC assignment form with your plumber and return this to Rheem with the required attachments.


  • Payment is made by Rheem Australia Pty Ltd (for STC claims made directly to Rheem)
  • Payment is made via EFT
  • Payment usually takes approximately 4 - 6 weeks

Contact Rheem on 132 552 for payment enquiries.

DISCLAIMER: Information contained in this site is based on publicly available data from Government authorities, and is provided as a guide only. All rebate and incentive schemes are subject to change, and require strict eligibility conditions to be met. STC values are nominal and are subject to change due to market fluctuations. Rheem reserves the right at its own discretion to refuse multiple assignment requests. Rheem advises to check full program terms and conditions with the relevant Government department or authority prior to purchasing a product for which you intend to claim a rebate(s). Rheem will not be held responsible for any cost, loss or damage incurred due to reliance upon the information contained in this site should such information be incorrect or contain an error. This page last updated as at 30 October, 2018.