Based on the parameters entered by the user, such as area (county), roof type, orientation, slope (degrees) roof surface ... the system of calculation, can produce results like: System Power (KW), Expected Annual Return (KWh ) Expected Revenue / year (Euro) Total Cost (million), Investment Expected Amortization (Years), and visualize data in a chart for the first year of the establishment. The user also has the ability to export the results in print format, PDF file and send PDF file attachment with email. In case of loan options, additional parameters are calculated such as: Amount of Loan, Years Loan Type Loan (with or without a mortgage property), based on the filing of the user. Finally, it shows the breakdown of revenue performance and the user, with features like: Production in KWh / Year Income / Year Cost of Maintenance and Safety / First, loan installments / Year (to be selected by the user using a loan) Profit / year cumulative recovery, totals, etc.