Solar panel adoption in Bangladesh has grown sharply over the last few years, driven by falling panel prices, rising BPDB tariffs, and frequent load-shedding that pushed many households and businesses toward backup power. If you are considering a solar installation in 2026, the economics have shifted considerably in favour of doing it — but the numbers vary a lot depending on system size, brand, inverter type, and whether you are going grid-tied or off-grid. This guide covers all of it.
The Three Types of Solar Systems in Bangladesh
Before looking at prices, it helps to understand what you are actually buying. Most residential and commercial installations in Bangladesh fall into one of three categories.
- Grid-tied system: panels connect to the grid through a grid-tie inverter. No battery. Powers your loads during the day and exports surplus. Cheapest option per watt, but no backup during grid outages.
- Hybrid system: panels plus battery storage with a hybrid inverter. Runs your loads from solar, charges the battery, and uses grid as backup. Most popular for households that want both savings and backup.
- Off-grid system: fully independent of the grid. Requires larger battery bank. More expensive and typically used in areas with unreliable grid supply.
Approximate System Costs — Bangladesh 2026
Prices below are for complete installed systems including panels, inverter, mounting structure, wiring, and installation labour. Battery costs are excluded for grid-tied and shown separately for hybrid.
Residential Solar System Cost Estimates (Installed)
| System Size | Type | Approx. Cost (BDT) | Approx. Monthly Generation |
|---|---|---|---|
| 1 kWp | Grid-tied | ৳70,000 – ৳95,000 | 90 – 110 kWh/month |
| 2 kWp | Grid-tied | ৳1,30,000 – ৳1,70,000 | 180 – 220 kWh/month |
| 3 kWp | Hybrid (without battery) | ৳2,00,000 – ৳2,60,000 | 270 – 330 kWh/month |
| 5 kWp | Hybrid (without battery) | ৳3,20,000 – ৳4,20,000 | 450 – 550 kWh/month |
| 10 kWp | Grid-tied (commercial) | ৳6,00,000 – ৳8,00,000 | 900 – 1,100 kWh/month |
Note
Monthly generation estimates assume Dhaka region solar irradiance (4.5–5 peak sun hours per day average across the year). Coastal and northern areas may generate slightly more or less.
Battery Costs if You Want Backup
Batteries are the most expensive component of a solar system. Lithium iron phosphate (LiFePO4) batteries have largely replaced older lead-acid options for new installations because of their longer cycle life (3,000–6,000 cycles versus 300–500 for lead-acid) and consistent performance in heat.
Battery Costs (Approximate, 2026)
| Battery Type | Capacity | Approximate Cost |
|---|---|---|
| LiFePO4 (local brand) | 5 kWh | ৳60,000 – ৳80,000 |
| LiFePO4 (imported) | 5 kWh | ৳90,000 – ৳1,20,000 |
| Lead-acid (tubular, local) | 2.4 kWh usable | ৳18,000 – ৳25,000 |
Payback Period — Does It Actually Make Sense?
At BERC's 2024 slab rates, a household using 300 units per month pays roughly ৳2,800–3,200 in energy charges (before VAT and fixed charges). A 2 kWp grid-tied system generating 200 kWh per month would offset approximately ৳1,400–1,800 per month in electricity costs, depending on which slab you are in. At that saving rate, a ৳1,50,000 system pays back in roughly 7–9 years — and panels carry a 25-year performance warranty.
The economics improve significantly if you are in the upper slabs (401–600 units or above), where the rate is ৳12.67/kWh. At that rate, a 3 kWp system saving 300 kWh per month saves nearly ৳3,800 per month — cutting the payback period to 4–5 years.
Things to Check Before You Sign Any Contract
- Panel brand and efficiency: ask for the datasheet. A 450W panel from an unknown brand may actually deliver 380W in real conditions.
- Inverter warranty: a minimum of 5 years on a string inverter, 10 years on a hybrid inverter, is standard from reputable brands.
- Net metering eligibility: some DESCO and DPDC consumers can export surplus to the grid. Ask your installer whether net metering approval is available in your area and whether the contract covers the paperwork.
- Roof condition: solar panels last 25+ years. If your roof needs work within that period, the panels will need to come off and go back on. Fix the roof first.
- Service and AMC: ask who will clean the panels, check inverter performance, and respond if something stops working. A system that sits dirty generates 15–25% less power.
Tip
Get written guarantees on two things: panel wattage (minimum performance guarantee of 80% output after 25 years from Tier 1 brands) and installation workmanship warranty (minimum 2 years from the contractor). Both should be on the contract, not just said verbally.