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Net Metering Export Value Calculator
What exported energy is worth under your own compensation schedule, and the discount against retail credit.
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Solar calculators
Screen array size, payback, and lifetime benefit before signing a quote.
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Off-Grid Kit Sizer
PV, battery and controller.
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Panel Add-On Headroom Calculator
Extra panels allowed by inverter headroom.
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Panel Area and Weight
Footprint, weight and roof load.
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PPA vs Buy Calculator
25-yr PPA total at escalator vs net purchase cost.
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PV Voltage Drop Calculator
DC voltage drop on a PV conductor run, with the length and size that hold the 2% design target.
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Roof Max Panels
Max panels after setbacks.
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Self-Consumption Ratio Calculator
What your production is worth at your self-consumption ratio, and how much a battery improves it.
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Shading Loss Estimator
kWh and dollar loss from shade.
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Soiling and Cleaning Payback Calculator
Yearly loss from soiling vs cleaning cost.
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Solar Cost
Gross and net cost after ITC.
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Solar NPV Calculator
Discounted cash flow over 25 years with rate escalation, module degradation and inverter replacement.
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