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Flat-Roof Ballast Estimator
Ballast block count screening; SE review required.
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Solar calculators
Sizing, production, cost, payback, batteries and incentives, each with the formula shown.
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PPA vs Buy Calculator
25-yr PPA total at escalator vs net purchase cost.
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CO2 Offset Estimator
Metric tons avoided via EPA eGRID average.
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Battery Backup Hours Calculator
Runtime for critical loads from usable kWh.
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Battery Cycle Life Cost Calculator
Lifetime kWh and $/kWh from cycles and usable capacity.
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Ground Row Spacing Calculator
Minimum row gap from module height to limit winter shading.
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Tilt Gain vs Flat Calculator
Extra kWh from tilted vs flat mount.
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Azimuth Direction Loss Calculator
Annual loss vs true south by azimuth choice.
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Clipping Loss Estimator
Yearly clipping loss from DC/AC ratio above 1.3.
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Bifacial Gain Estimator
Extra kWh from rear side by surface albedo and height.
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