Solar PV Design
Solar panel count, array wattage, tilt angle, azimuth, roof area, and microinverter planning calculators.
Solar And PV Systems
PV array size, solar panel count, string voltage, cable voltage drop, charge controller checks, and solar energy output.
Subcategories
Solar PV Electrical
PV string voltage, current, cable voltage drop, and charge-controller checks.
Solar PV Energy
PV production, solar kWh, self-consumption, grid export, project cost, and cost per kWh calculators.
Published Calculators
Solar Export Energy Calculator
Estimate solar allocation for a defined interval, including direct site use, battery charging, grid export, grid import, and self-consumption share.
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Solar Cable Voltage Drop Calculator
Estimate PV circuit voltage drop, drop percentage, and remaining margin to a 3 percent reference from entered current, resistance, length, and system voltage.
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PV String Voltage Calculator
Estimate cold PV string Voc and STC Vmp, then compare string voltage with an entered inverter maximum for preliminary equipment review.
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PV Array Tilt Calculator
Compare fixed PV array tilt with site latitude and estimate tilt offset, cosine alignment, and screened daily energy from a documented baseline.
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PV Array Azimuth Calculator
Compare PV array azimuth with a project reference direction and estimate circular-angle alignment from an entered daily-energy baseline.
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Microinverter Count Calculator
Estimate unit count, AC/DC capacity, DC/AC ratio, and branch-group count from entered module and microinverter data.
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Charge Controller Size Calculator
Calculate array current, margin factor, and recommended controller current from PV array watts, battery voltage, and sizing margin.
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Solar Self-Consumption Calculator
Compare time-aligned PV generation and site load, with optional battery flows, in a transparent behind-the-meter energy balance.
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PV String Current Calculator
Separate module operating or short-circuit current from the effect of parallel PV strings, with an explicit adjustment factor and screening limit.
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PV Array Energy Calculator
Calculate PV energy results from a documented yield input supplied by PVWatts, SAM, measured data, or another site-specific resource. This is not a generic peak-sun-hours calculator.
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Solar Panel Size Calculator
Estimates preliminary PV array wattage and panel count from daily energy, peak sun hours, system losses, and panel wattage.
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Solar String Calculator
Compares PV string module counts against cold-weather Voc and inverter MPPT voltage limits using module data, temperature assumptions, and equipment voltage ratings.
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