Use this free calculator to plan first-year savings, simple payback and a ten-year scenario. Change the load, starting surge, losses and battery limits to match your equipment.
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Every input includes a simple explanation.
Private: the calculation runs in your browser. Your inputs are not sent to GharGanit.
Motors and compressors can need extra power when they start.
Battery age, temperature and a high discharge rate can reduce delivered energy.
Use this as a planning range. Confirm continuous rating, peak rating and battery compatibility with the manufacturer and a qualified installer.
The scenario values self-consumed generation at the entered tariff, subtracts maintenance and reports simple payback rather than an investment guarantee.
Obtain a site yield estimate, current net-metering rules, degradation assumptions, financing costs and a written installation quotation.
Valuing every generated unit at the retail tariff overstates savings when exports receive a different credit or are curtailed.
Annual saving = self-consumed generation × tariff − maintenance
Obtain a site yield estimate, current net-metering rules, degradation assumptions, financing costs and a written installation quotation.
Valuing every generated unit at the retail tariff overstates savings when exports receive a different credit or are curtailed.
Use this as a planning range. Confirm continuous rating, peak rating and battery compatibility with the manufacturer and a qualified installer.