1. The Standard Test Condition rating (STC) assumes a standard set of optimal operating conditions (25°C cell temperature, 1000 W/m2 and an air mass of 1.5). The STC rating is most often used by manufacturers to classify the power output of PV modules. To calculate the system’s energy production for any future year, the expected degradation in system performance is included in every solar proposal provided to our customers.
2. Energy Output is calculated based on historical solar irradiance at the given location. A typical meteorological year is selected using statistical methods. Factors including panel tilt, orientation (azimuth), and system efficiency are considered. 
3. System efficiency is estimated to account for losses caused by a variety of factors. These factors include intermittent shading, cable losses, dirt, scheduled downtime, manufacturer tolerances, inverter efficiency for DC to AC (this does not affect off-grid DC only systems), battery round trip efficiency, and other factors. 
4. Utility electricity price inflation is adjusted based on the given location. 
5. The financial results in the proposal provided assume that all indicated subsidies are included. Please ask your solar representative for detailed financial outcomes if any subsidy applications are unsuccessful. 
6. Australian Small-scale Technology Certificates (STCs) are an incentive provided under the Renewable Energy Target. One certificate is equal to one megawatt hour of eligible renewable electricity either generated or displaced by the installed system. [ONLINE] Read more at: http://www.cleanenergyregulator.gov.au/RET/Scheme-participants-and-industry/Agents-and-installers/Small-scale-technologycerticates. 
7. Rebates and incentives are subject to your (the Customer’s) eligibility and acceptance into their respective programs or schemes. 

Note: The system design may change based on a detailed site audit. Estimated savings are based on past electrical usage and utility rates provided by the customer. Actual system production and savings will vary based on final system design, utility rates, applicable subsidies, and your energy usage post-solar installation. Utility rates, charges and fee structures imposed by your utility are not affected by this proposal and are subject to change in the future at the discretion of your utility. The production calculations in this report are based on historical climate data for the site location and represent typical estimates of future solar production.