Calculator cluster

Solar panels

Array sizing, tilt and azimuth, series vs parallel wiring, temperature loss, cabin loads and roof space.

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  Off-Grid Cabin Daily Solar Need

  Add up fridge, lights, laptop, water pump and other cabin loads to get a daily watt-hour budget for solar sizing.

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  Series vs Parallel Solar Calculator

  Add Voc in series and Isc in parallel to check string voltage, array current and nameplate watts against your MPPT limits.

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  Solar Array Sizer

  Estimate how many solar panels you need from daily watt-hours, panel watts and peak sun hours, including a realistic derate.

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  Solar Panel Temperature Loss Calculator

  Estimate how many watts a solar panel loses when cell temperature rises above 25°C using the Pmax temperature coefficient.

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  Solar Roof Space & Weight Calculator

  Estimate square meters of roof and kilograms of dead load for a given number of solar panels.

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  Solar Tilt Angle & Azimuth Estimator

  Estimate annual, summer and winter solar panel tilt from latitude, plus true-south or true-north azimuth.