Solar decision tools
Plan rooftop solar with clear numbers
Estimate the rooftop solar size your home needs, then check roof space, installation cost, PM Surya Ghar subsidy, generation and payback.
Solar calculators
Rooftop feasibilityEstimate how many selected panels fit in usable roof area and the practical nameplate capacity by area.Solar system sizeEstimate a suitable rooftop solar capacity from your electricity use.Monthly solar generationEstimate each month's solar generation and consumption shortfall from twelve user-entered peak-sun-hour assumptions.Solar configuration comparisonCompare system costs, backup capability, grid dependence and long-term scenarios without assuming export eligibility.Solar costEstimate the installed cost range for a rooftop solar system.Solar ROIEstimate solar savings, payback period, and long-term return.Solar subsidyCheck an indicative residential rooftop solar subsidy amount.
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Energy
Understand usage, bills, appliances, inverters, and battery backup.
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Compare charging costs, petrol alternatives, and solar charging.
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Plan a car purchase: affordability, down payment, loan EMI, new vs used, ownership cost, resale, fuel and insurance.
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Plan buying and running a home: affordability, rent vs buy, stamp duty, loans, prepayment, upkeep, renovation, water and energy.
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