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Independent solar knowledge for Bangladesh

Beyond Solar.
Smarter Energy.

Type your bill. See what solar would cost you, and save you. Free, independent, no sign-up.

My Rooftop

Generating

Self-powered
today

85%
5 kWDrag or use arrow keys to set battery charge

3.2 kW

Solar · 6 kWp

0.9 kW

Home · 12 kWh/d

0.0 kW · 78%

idle · ≈15h

0.0 kW

Grid idle

Generation · typical Sep day

19.7 kWh

System balanced · up to 4.1 kW usable in Sep

Illustration · a typical Dhaka home with 6 kW and a 10 kWh battery · your own numbers are below

Step 1 · Estimate

Your bill, your roof, your system.

Three questions

≈ 755 units a month at the average tariff.

City
Count your loads instead ACs, fans, lights…

Tap what you run. The bill above follows the count, and the estimate follows the bill.

Non-inverter appliances Fixed-speed AC, ordinary fridge, regular ceiling fan.

Air conditioner 1500 W · 6 h/day 0
Refrigerator 250 W · 10 h/day 0
Ceiling fan 75 W · 12 h/day 0

Inverter appliances Variable-speed AC and fridge, BLDC fan — about half the power.

Inverter AC 900 W · 6 h/day 0
Inverter refrigerator 120 W · 10 h/day 0
BLDC ceiling fan 30 W · 12 h/day 0

Everything else

LED light 10 W · 6 h/day 0
Television 100 W · 5 h/day 0
Router / modem 15 W · 24 h/day 0
Water pump 750 W · 1 h/day 0
Washing machine 500 W · 1 h/day 0
Computer 150 W · 6 h/day 0
Iron / kettle 1000 W · 0.5 h/day 0
Deep freezer 200 W · 10 h/day 0
Microwave 1200 W · 0.3 h/day 0
Rice cooker 700 W · 0.5 h/day 0
Water heater / geyser 2000 W · 0.5 h/day 0
Electric oven 1500 W · 0.3 h/day 0
Laptop 60 W · 6 h/day 0
Phone charging 10 W · 3 h/day 0
Table / stand fan 50 W · 8 h/day 0
Exhaust fan 40 W · 4 h/day 0
CCTV / DVR 30 W · 24 h/day 0
Blender / grinder 400 W · 0.1 h/day 0
0 W connected 0.0 units a day 0 units a month ≈ ৳0 a month

Your estimated system

10 panels 5.8 kW estimated
0510152025ft0510152028.2 × 21.3 ftpanels face this way

600 sq ft · Dhaka · nothing on the roof yet

Modify your roof
Costs
৳4,39,000–৳6,90,000
Saves
≈ ৳6,434 a month
Pays back
≈ 7.3 years

The roof holds 10 panels; the bill would use 12. The roof is the limit here.

Estimated, with a battery for load-shedding. Final sizing needs a site survey.

Next: Plan Your Roof

Plan it yourself

Find out what actually fits, before anyone visits.

Enter your roof size, drag your water tank and stair room where they really sit, and the planner works out how many panels are left once you take out the parapet's shadow, room to walk, and everywhere those objects throw shade across the year.

  • Your measurements, in feet or metres
  • Live 3D model of the array and its frame
  • Wiring check and an indicative steel take-off

Free · in the browser · every figure an estimate

Where we can help

Homes, businesses, and the battery question.

Home

Your roof, your bill, your outages.

What a household system actually does, which kind suits which home, and where the numbers come from.

Read about home solar

Business

When a commercial roof is worth it.

Daytime loads, commercial tariffs and net metering — the things that decide whether a factory or office roof pays.

Read about business solar

Batteries

Backup, honestly sized.

What a battery can carry through load-shedding, for how long, and why LiFePO4 has replaced lead-acid.

Read about batteries

How this works

Learn first. Decide later.

SolarBeyond is an independent information and consulting practice. We do not install or stock equipment, so the advice has nothing steering it.

  1. 01

    Explore

    Use the calculator and the roof planner. They are free, they run in your browser, and every number says it is an estimate.

    Open the calculator
  2. 02

    Plan

    Draw your roof and put the water tank, the stair room and the parapet where they really are. What is left is what you can build.

    Open the roof planner
  3. 03

    Ask

    Bring your bill, your roof or your question. You get a plain, independent answer and what we would do next in your place.

    Ask an expert

FAQ

Common questions.

Straight answers, no jargon. Still unsure? Ask an expert.

How much solar do I need?

It depends on your monthly electricity use, roof space and what you want from it. As a starting point, the calculator estimates a system size from your monthly bill. Final sizing always needs the roof measured and the loads checked on site — by whoever eventually installs.

Do I need a battery?

Not always. If your goal is mainly to reduce your bill and your grid supply is reliable, grid-tied solar may be enough. If load-shedding affects you, or you want to use solar energy at night, a battery makes the system far more useful — and more expensive.

Does SolarBeyond sell or install systems?

Not yet. Right now SolarBeyond is an information and consulting practice: we explain, share what we have learned, and help you think your own project through. Whether that changes later, we will say so plainly on this site.

Is the advice independent?

Yes. We do not stock equipment, take orders or earn from what you buy, so there is nothing steering the answer. Where a figure on this site is an estimate, it is labelled as one.

What does a consultation cost?

Asking a question costs nothing. If a project needs more than a conversation, we will tell you what that involves before anything is agreed.

Your roof can do more.

Have a question about solar, batteries or your bill? Ask. You get a plain, independent answer.

Ask an Expert