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PV*SOL Expert 6.0 - Manual - Valentin Software

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11.3.2.1 Basic Parameters<br />

The following parameters are entered on this page:<br />

Capital Interest Rate<br />

This is the interest on capital borrowed from the bank for the PV investment or the interest<br />

that could be charged on the capital used.<br />

Price Increase Rates<br />

Changes to running costs and fuel costs (if a back-up generator is to be used) are<br />

important for calculating the cash value of the system. Increase rates for electronics,<br />

batteries and the back-up generator can also be included.<br />

Lifespan<br />

The period given by the manufacturer as the expected lifespan of the system. For PV<br />

systems this is usually set between 10 and 25 years. The programme allows various<br />

lifespan periods to be entered for electronics, batteries and the back-up generator.<br />

Economic Efficiency Calculation – Stand-Alone Systems<br />

138

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