Here you’ll find shortcuts to all the self-reliance calculators from our Execution Plans.
Load Evaluation Calculator
Calculate your daily watt hour usage (you need to know this to correctly size a solar PV system).
Minimum PV System Size Calculator
Calculate the minimum system size for your energy requirements.
Solar PV Array Sizing
Calculate how many solar panels of a certain wattage you need in your array to meet the specified system size.
Battery Bank Sizing Calculator
This calculator will show you how large battery capacity you need in a solar PV system, as well as how many batteries wired in series and parallel.
Calculate the Current
Calculate the current (amps). You’ll need to know this to calculate the correct wire thickness.
Wire Thickness Calculator
Calculate the required thickness of wires for your solar PV system
Rainwater Catchment Area Calculator
This calculator will help you calculate the size of a catchment area, for example a roof.
Runoff from a Catchment Surface (English units, i.e. feet and gallons)
This calculator will help you calculate how much rainwater in gallons you can collect annually from a certain catchment area.
Runoff from a Catchment Surface (Metric units, i.e. meters and litres)
This calculator will help you calculate how much rainwater in liters you can collect annually from a certain catchment area.