Calculator
MPPT Window Fit Checker
Min and max panels in series against inverter MPPT window.
Open calculatorCalculators
Solar calculators
Sizing, production, cost, payback, batteries and incentives, each with the formula shown.
Calculator
Solar NPV Calculator
Discounted cash flow over 25 years with rate escalation, module degradation and inverter replacement.
Open calculatorCalculator
25-Year Cash Flow Milestones
Nominal cumulative cash position at years 5, 10, 15, 20 and 25, with the inverter replacement dip.
Open calculatorCalculator
Self-Consumption Ratio Calculator
What your production is worth at your self-consumption ratio, and how much a battery improves it.
Open calculatorCalculator
Net Metering Export Value Calculator
What exported energy is worth under your own compensation schedule, and the discount against retail credit.
Open calculatorCalculator
String Fuse Size Calculator
Fuse rating at 1.25 x 1.25 x Isc, checked against the module maximum series fuse, plus conductor minimums.
Open calculatorCalculator
PV Voltage Drop Calculator
DC voltage drop on a PV conductor run, with the length and size that hold the 2% design target.
Open calculatorCalculator
DC to AC Ratio Optimizer
DC/AC ratio, with the clipping loss taken from your own hourly simulation and priced.
Open calculatorCalculator
End-of-Life Recycling Estimator
Recycling cost from panel count.
Open calculatorCalculator
Solar Warranty Checker
Remaining product and performance warranty years.
Open calculator