Welcome to the Raysolar Off-Grid system sizing tool. Please complete the below sections and then hit the submit button at the bottom of the page.
User Information
First name
Last name
Phone number
Email address
Project address/location qution
Part 1, Step A: AC LOADS. If none go to next step "DC LOADS".
AC Total Watt-Hours/Day
Peak Inverter Load (W)
Assuming an inverter efficiency of 90%,multiply the total Watt-Hours/Day by 1.1 to allow for inverter power loss Your inverter may be worse or perhaps better, therefore you can adjust the efficiency factor. Remember, an inverter used for small loads is less efficient than when being used under higher loads.
Part 1, Step B: DC LOADS.
DC Total Watt-Hours/Day
Point to remember: Connecting batteries in series (positive of one to negative of the next) adds the voltages and does not increase the Amp-Hours of the battery bank. Connecting batteries in parallel (all negatives together and all positives together) adds the Amp-Hours but does not change the battery bank voltage. A battery bank may have batteries in series strings, which are then connected in parallel to increase Amp-Hour capacity. A battery bank with the fewest number of cells (or batteries) is preferred over one with many batteries or strings in parallel connection.
Insert the inverter input voltage
Select inverter input voltage qution
Part 2, Battery Sizing
Insert the number of days of autonomy desired qution
Depth of discharge for the battery (%) qution
Temperature factor qution
Enter the volts and the Amp-Hour capacity of the battery qution
Amp-Hours rating
Total number of batteries required,
Part 3: PV Array Sizing
Select the closest city to your location.
PV Panel Wattage. qution
Total number of PV panels required.