Solar Sizing Calculator
Estimate the rooftop solar system that would offset your electricity use. Enter your monthly units (from your bill) and get the recommended system size (kW), the number of panels, the roof area needed, and the estimated yearly generation. This is an indicative planning aid — a proper site assessment by an empanelled installer sets the real design.
Find this on your electricity bill (average across the year is best).
India averages ~4 units per kW per day; sunnier regions and unshaded south-facing roofs are higher.
to offset ~300 units/month at 4 units per kW per day.
Size to your consumption, not bigger — net-metering rules may cap export, and an oversized system wastes money. Check the PM Surya Ghar subsidy and your state net-metering terms.
Indicative only. This uses an average generation figure and simple ratios; actual output depends on your location, roof orientation, shading, panel and inverter quality, temperature and soiling. Roof area and panel count are approximate. A proper site assessment by an empanelled installer, and your DISCOM’s net-metering and subsidy terms, set the real design and payback.
Related Guides — Deep-dive reading
Rooftop Solar for Indian Homes: The Complete Guide
How rooftop solar actually works and pays back — the panels, inverter and net meter, the on-grid, off-grid and hybrid choice, how much roof and money a system needs, the PM Surya Ghar subsidy and net metering, and how to judge a good installation.
Electrical & WiringResidential Electrical Systems: The Complete Guide for Indian Homes
How the electricity in an Indian home actually works — from the utility supply and meter through the distribution board, circuits, wiring, earthing and protection, to lighting, safety, energy efficiency, smart controls, solar and backup — written so a homeowner can understand, plan and judge it, and know exactly where a licensed electrician must take over.
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Wall-mounted horizontal body jets turn a shower into a spa massage — but every jet is a thirsty extra outlet. How many jets, at what heights, the big pump and geyser they force, the pipe sizing and concealed valves you must plan before tiling, the water and running cost, and exactly who it is worth it for.
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