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Solar PV & Battery Payback Calculator
Explore the calculator used within Solar PV Simplified.
Calculate Solar PV and battery storage performance, MCS 032:2025 self-consumption and estimated financial payback. Select a worksheet below to look through the calculator.
Tip: use the buttons above to move between worksheets. The page changes instantly without reloading.
Solar PV Payback
Estimated 20/25-year financial payback for a Solar PV system, including electricity savings, export revenue, maintenance assumptions and cumulative benefit.
Solar PV + Battery Storage
Models a Solar PV system combined with an Electrical Energy Storage System (EESS), including the additional benefit of battery storage.
MCS 032:2025 Calculations
Uses the applicable MCS self-consumption methodology to calculate estimated PV self-consumption with and without electrical energy storage and resulting grid independence.
Off-peak Battery Charging
Optional modelling of lower-cost grid charging, battery round-trip efficiency, charging days and the resulting estimated financial benefit.
MCS 032 Summary
A clear summary of key Solar PV and EESS performance information, including generation, self-consumption and grid independence/self-sufficiency.
Designed to Save Installer Time
Information entered in the calculator is reused throughout the workbook, reducing repeated lookups and manual calculations.
Important: Financial and performance figures produced by the calculator are estimates. Actual results depend on system design, weather, electricity consumption, tariffs, battery performance, system operation and customer behaviour. Installers remain responsible for checking calculations and information supplied to customers in accordance with applicable MCS requirement