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# Federal Govt Rebates (STCs)

## STCs - Small-scale Technology Certificates

This is the “rebate” that is provided by the Federal Australian Government. The reason I put “rebate” in quotation marks is due to the following definition:

Rebate1 /ˈriːbeɪt/
noun
a partial refund to someone who has paid too much for tax, rent, or a utility.

Therefore, technically, this isn’t so much a rebate as it is a financial incentive. This is due to the STCs being provided as a point-of-sale discount.

# STCs are based on four factors:

System size (kWs)
The Solar System size corresponds to Solar Generation, not Storage. This means that batteries do not generate any STCs.
STC Zoning (1-4) - each zone has a code that will need to be multiplied. Below is a rough map of the STC Zone ​
Zone Ratings (used in the formula below)
Deeming Period - how many years left until 2030 when the scheme is planned to end.
For example, we are in 2023 where the deeming period is 8 years. ​
STC Price - STCs are traded on an open marketplace and their price is not fixed and fluctuates like a stock on the stock market.
Most solar retailers choose to use a fixed price on the Solar quote provided to the customer for ease of calculations as there is no way to guarantee a fixed price for the STCs.

# STC Calculation Formula

For this formula, the number of STCs generated is rounded down if you get a number with decimals.

## Number of STCs = Solar System Size (kW) x Postcode Zone Rating x Deeming Period (years)

### Example:

STCs = 6.6kW x 1.185 (Zone 4) x 8 years (Deeming period 2023)
STCs = 62.568
Therefore, the STC number would be 62 since we the result is always rounded down.
At the moment, we estimate the STC price as \$36.5 for each certificate. That means in the situation above:
62 x \$36.5 =\$2,263