Energy, Solar, Sustainability & Environment

Solar PV Design & Array Sizing Calculators

Sizing and layout for photovoltaic systems: system kW from consumption, expected kWh production, roof area and module count, row spacing, temperature derating and performance ratio verification. These are the numbers an installer puts on a proposal and a designer puts on a layout drawing.

3 calculators in this category

Solar System Size (kW) CalculatorNREL PVWatts sizing methodEnter the kWh figure from your electric bill and this calculator returns the DC array size in kilowatts needed to hit your…
Solar Panel Output (kWh) CalculatorNREL PVWatts loss modelEnter your array's DC rating, the peak sun hours your site receives, and the losses between the module glass and the meter, and…
Solar Panel Count & Roof Area CalculatorIRC R324 / IFC 1204 access pathwaysGive this calculator a target system size and the module you intend to use, and it returns the number of modules, the total…

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