How to buy STCs
This page explains how to purchase small-scale technology certificates (STCs) through the open STC market and through the STC Clearing House.
Use this information if you wish to buy STCs created against an eligible installation of a solar water heater, heat pump, small-scale solar panel, wind, or hydro system.
While most STCs are purchased by liable entities to fulfil their legal requirements under the Act, anyone with an appropriate REC Registry account may buy and trade in STCs.
- Payment for STCs is negotiated outside of the REC Registry.
- The price depends on whether STCs are bought in the market or through the STC Clearing House.
- Ownership must be transferred in the REC Registry.
The owner of the STCs may further sell or surrender their certificates as they wish.
Buy options: open STC market, or STC Clearing House
- STCs must be correctly created and registered by the Clean Energy Regulator in the REC Registry before they can be purchased.
| STC Market |
STC Clearing House |
- Not controlled by any single entity
- Buyer must find a seller and negotiate sale directly with them
- Potential for immediate sale once seller is found
- Price is set by market and fluctuates with the market
- Payment is made directly between seller and buyer
- The Clean Energy Regulator does not set the price of STCs and does not get involved in disputes between buyers and sellers
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- Managed by the Clean Energy Regulator.
- Buyers and sellers are in one place; no choice or negotiation required.
- STCs are added to Transfer List and sold only when there is a buyer
- There is no guarantee on how long STCs will take to sell.
- Price is set at $40 (excluding GST)
- Payment is received by direct deposit from the STC Clearing House account
- For more information visit STC Clearing House.
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How to buy through the STC Market
- Sellers may be Registered Agents (or retailers) who specialise in the creation and trade of STCs, owners of small-scale systems, or individuals who wish to trade STCs. You can find STC traders by doing a web search for “REC traders” or “STC traders”.
- Purchase of STCs is a contract for the sale of goods. Ensure there is proper paperwork accompanying the purchase.
The Clean Energy Regulator does not set the price of STCs and does not get involved in disputes between buyers and sellers.
The process is as follows:
- Find a seller who has the quantities/type of STCs you need at a suitable price.
- Negotiate quantity, price and payment method with the seller. As this is a sale of goods, ensure there is proper paperwork to accompany the sale.
- Organise payment to the seller.
- The seller will transfer the negotiated quantity of STCs to your nominated REC Registry account.
- To accept the transfer, log in to the REC Registry with your usual username and password.
- Your Account Summary will display a new Incoming Offer:

- Click on the number next to “Incoming Offers”. The “My Incoming REC Transfers” screen will display:

- To accept the incoming transfer, click the checkbox next to the Transfer ID you wish to accept, enter a note for the seller if you wish, and click “Accept Selected Transfer/s”.
- You will be asked to confirm the acceptance:

- Click “Confirm”.
- The transfer will be accepted and you will be returned to the Account Summary screen with confirmation of the transfer:
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- Note that the REC Registry does not process payments for transfers of STCs. You must organise payment for the STCs directly with your seller.
How to buy through STC Clearing House
Note that you must have a bank account listed against your account in the REC Registry and be registered for GST in order to buy STCs through the Clearing House.
- Log into the REC Registry with your usual user account.
- Click on ‘STC Clearing House’ from the REC Registry menu.

- Click on ‘Buy STCs’ from the drop down list. The ‘Buy STCs’ screen is displayed.

- Enter the number of STCs to buy in the box.
- Click on ‘Buy STCs’.
- A warning screen will display:

- Read the Warning and the Terms and Conditions, and click on the check box to confirm your acceptance of the information.
- Click on ‘Confirm’. A confirmation message will display:

- Approval will be provided by the Clean Energy Regulator within 3 days of receipt of the order.
- Once approval has been provided by the Clean Energy Regulator, an invoice advice to your account will be raised. You will receive an email confirming the invoice has been raised.
- Log into the REC Registry and select “My Fees and Invoices” --> “View my Outstanding Invoices”.
- Select the invoice. It will display in PDF on a new screen:

- Pay the invoiced amount into the specified bank account details.
- Once the funds have been cleared the STCs will be automatically transferred to you.
- You will receive a final Tax Invoice reconciling the final purchase price and the payment already made by you.
- The invoice will either display a balance due of $0.00, or you will receive a refund amount which represents those STCs purchased from a seller who is not registered for GST.
Date last updated: 28 Mar 2012