> Solar system saving calculator

This calculator will help you work out if installing a solar panel power system is financially worth the expense or not. It will tell you how long the system takes to break even (the payback period) and how much money you could be saving over its total life. Great for checking a solar quote.

Values for the quoted solar system Cost ($): This is the cost you actually pay after all rebates and RECs
Annual output (Kwh): Electricial output of the system given in the quotation.
Years system expected to operate: Usually 20 to 30 years.

Inverter Replacement Figures Cost of replacement inverter ($): Cost of replacing and installing new inverter after it fails
Expected lifetime of an inverter (years): How long until an inverter fails (warranty plus half warranty period is typical)

Values for your electrical costs Price per kWh you pay (cents): This is shown on your electrical bill
Annual bill inflation (%): Around 4% is usual

Values for the Feed In Tariff

Percentage of your generated electricity going into the grid:% Set to 100% if modelling gross Feed in Tariff

Feed in Tariff per kWh (cents):
Years Feed in Tariff scheme runs: years

Model the Opportunity cost of the Capital

The money that you intend to spend on the solar system could be invested instead to provide a return, this allows you to model that return in comparision.

Annual Net (after tax) return:% Return say from a Bank account or bond

Email a Friend about this Calculator

> Solar system saving calculator

Related Articles and Links..