Solar Water Heater Savings Calculator

Q: Does a solar water heater work in winter and on cloudy days?

Yes. On sunny days the sun does almost all the heating; on cloudy days and in winter a built-in electric backup element tops up the temperature so you always have hot water.

Q: Do I need to upload my bill?

No. The calculator estimates from household size and current heating method. Adjust the rate to match your bill for a closer figure.

See exactly how much a Shamsi 200 solar water heater saves you against your current electric or gas geyser — with payback time, 15-year savings, and how much hot water comes free from the sun. Just pick your household and hot-water points for an instant, tailored estimate.

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Raj Solar · Free Estimate

Solar Water Heater Savings Calculator

See how much a Shamsi 200 solar water heater can save you against your current electric or gas geyser — plus how much of your hot water comes free from the sun. No bill upload needed.

Tell us about your home

Two quick questions — we'll estimate your savings instantly.

How many people in your home?

Where do you use hot water?

How do you heat water now?

Electricity rate (PKR / unit) Edit to match your bill — savings are estimated on this rate.

Frequently asked questions

How much can a solar water heater save me?

It depends on how you heat water now and how much you use. Replacing an electric geyser usually saves the most, since water heating is one of the biggest electricity loads in a home. The calculator estimates your monthly saving from your household size and current method.

Does a solar water heater work in winter and on cloudy days?

Yes. On sunny days the sun does almost all the heating. On cloudy days and in winter a built-in electric backup element tops up the temperature, so you always have hot water — you just use a little grid power on those days.

Will one Shamsi 200 cover my whole family?

A Shamsi 200 holds 200 litres, which comfortably covers a typical family. Very large households may use more than the tank holds on peak days, so a small share still comes from backup — the calculator shows your solar coverage percentage.

Do I need to upload my bill?

No. The calculator estimates from your household size and current heating method. Just adjust the rate to match your bill for a closer figure.

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