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🇧🇩 Solar Calculator Bangladesh

Enter your monthly electricity bill in taka and district — get solar system size, SREDA net metering credits, IDCOL 10-year loan EMI, monthly savings, and payback period.

Your electricity details
৳BDT
Solar system results — Bangladesh
2000W (2.0 kWp) — 1314 kWh/kWp/yr
Monthly kWh usage (from bill)80 kWh/mo
Monthly solar production219 kWh/mo
Annual solar production2628 kWh/yr
Monthly savings vs grid৳1,413/mo
Self-consumption savings৳13,797/yr
SREDA net metering credit৳3,154/yr
Total annual benefit৳16,951/yr
System cost৳40,000 – ৳80,000
IDCOL loan EMI (10yr, 9%)৳760/mo
Payback period3.5 years
25-year net savings৳363,765
IDCOL Green Loan: IDCOL (Infrastructure Development Company Limited) offers subsidized solar loans through partner microfinance institutions (MFIs). Apply through IDCOL's partner banks: BRAC Bank, Dutch-Bangla Bank, and others. Rural Solar Home Systems (SHS) may qualify for direct IDCOL grants of BDT 2,000–5,000. Visit idcol.org for current programs.
SREDA Net Metering: Register through your electricity distributor (BPDB, DESCO, DPDC). SREDA issues the net metering approval. Your surplus solar is credited at ~BDT 4/kWh injection rate. Maximize self-consumption first — retail rate (BDT 6–9/kWh) is more valuable than the injection rate.
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How to Use This Calculator

Enter your monthly bill and district

Enter your average monthly electricity bill in Bangladeshi taka (৳ BDT) from your distributor — BPDB, DESCO, DPDC in urban areas, or rural cooperative (PBS). For village off-grid scenarios, enter 0. Select your district — Rajshahi (5.0 PSH) in the northwest is Bangladesh's sunniest region. Bangladesh overall receives 4.5–5.0 kWh/m²/day of solar irradiance, making it a viable solar market despite its tropical climate.

Set system size and financing options

Select your system size in watts. Bangladesh has two main solar markets: rural Solar Home Systems (SHS) typically 50–300W for off-grid electrification (powered by IDCOL since 2003), and grid-tied systems 1kW–100kW for urban homes and businesses. Enable SREDA net metering if you have a grid connection and want to export surplus power. Enable the IDCOL loan toggle to see the monthly EMI calculation for IDCOL's subsidized green loan at 9% over 10 years.

Bangladesh's unique solar context

Bangladesh has one of the world's largest rural solar programs — over 6 million Solar Home Systems installed through IDCOL since 2003, electrifying villages without grid access. Urban grid-tied solar is growing rapidly as grid electricity prices rise. Load shedding (power cuts) remains common, making solar with battery backup attractive despite higher upfront cost.

The Formula

Monthly kWh = Monthly Bill (BDT) ÷ ৳7.50/kWh (BPDB avg residential tariff) Annual production = kWp × PSH × 365 × 0.80 efficiency Self-consumption (70%) = Annual kWh × 0.70 × ৳7.50/kWh retail SREDA net metering = Surplus kWh (30%) × ৳4.00/kWh injection rate Installation cost = ৳20–40/W installed IDCOL loan EMI = P × r(1+r)^n / ((1+r)^n - 1), 9% pa, 10yr Payback = Total cost (BDT) ÷ Annual benefit (BDT)

Bangladesh's electricity tariff is set by the Bangladesh Energy Regulatory Commission (BERC) and BPDB. The residential tariff ranges from BDT 5.00–9.00/kWh depending on monthly consumption (tiered pricing). The blended average of BDT 7.50/kWh is used here. SREDA (Sustainable and Renewable Energy Development Authority) governs net metering policy. IDCOL manages both the SHS program for rural off-grid and green loans for grid-tied urban solar. Solar installation costs in Bangladesh have fallen sharply — quality systems now available for BDT 20–40/W installed.

Example

Fatima — Chittagong home, 5kW, SREDA net metering

Fatima pays BDT 1,500/month for her Chittagong home. She installs a 5kW grid-tied system with SREDA net metering to reduce her bill and export surplus power during peak sunlight hours.

Monthly bill৳1,500
District / PSHChittagong, 4.8 PSH
System size5kW (5,000W)
SREDA net meteringYes
IDCOL loanNo (cash purchase)

Result

Annual production~7,008 kWh/yr
Monthly solar production~584 kWh/mo
Monthly savings vs grid~৳2,440/mo
Self-consumption savings~৳36,942/yr
SREDA net metering credit~৳8,410/yr
Total annual benefit~৳45,352/yr
System cost৳100,000–200,000
Payback~3.3 years
25-year net savings~৳983,800

Chittagong's 4.8 PSH provides excellent solar production. With monthly savings exceeding Fatima's original electricity bill, the solar system pays back in approximately 3 years — one of the fastest paybacks in Asia. The SREDA net metering credit adds significant value by monetizing surplus production during Chittagong's sunny dry season (November–April).

FAQ

Yes — Bangladesh has one of the fastest solar payback periods in the world, typically 3–5 years for grid-tied systems. Rising BPDB electricity prices, frequent load shedding, and government incentives through SREDA and IDCOL make solar very attractive. Bangladesh's solar resource (4.5–5.0 PSH) is excellent despite its tropical climate. The government targets 40% renewable electricity by 2041. For rural areas without grid access, IDCOL Solar Home Systems have already electrified over 20 million households.
SREDA (Sustainable and Renewable Energy Development Authority) manages Bangladesh's net metering policy for grid-connected solar systems. Surplus solar electricity exported to the grid earns credits at approximately BDT 4.00/kWh. To register: (1) Install a SREDA-approved system. (2) Apply to your electricity distributor (BPDB, DESCO, DPDC). (3) SREDA approves the net metering setup. (4) A bidirectional meter is installed. Credits accumulate monthly and offset your electricity bill. Residential systems up to 10kW are eligible.
IDCOL (Infrastructure Development Company Limited) offers two solar financing programs: (1) Solar Home System (SHS) program — direct grants and subsidized loans for rural off-grid households, available through partner NGOs and MFIs. Grant component: BDT 2,000–5,000 per system. (2) Green Finance — subsidized loans for grid-tied urban/commercial solar at approximately 9% annual interest over 10 years, available through partner banks (BRAC Bank, Dutch-Bangla Bank, etc.). Apply at idcol.org or through any IDCOL partner institution.
Solar installation costs in Bangladesh range from BDT 20–40/W installed (approximately $0.18–$0.36/W USD). A 5kW system costs BDT 100,000–200,000. Rural SHS (Solar Home Systems) start from BDT 6,000–8,000 for 50W off-grid systems with LED lights and phone charging. Quality has improved significantly — look for SREDA-certified installers and panels with IEC certification. Chinese brands (Jinko, Risen) dominate, with some local assembly. Always get at least 3 quotes.
Rajshahi (5.0 PSH) in the northwest is Bangladesh's sunniest district, with a drier climate than coastal areas. Chittagong (4.8 PSH) and Rangpur (4.8 PSH) are also excellent. Khulna (4.7 PSH) in the southwest is good. Dhaka (4.5 PSH) is slightly lower due to urban haze. Sylhet (4.6 PSH) and coastal areas receive more rainfall, which slightly reduces annual production. Overall, Bangladesh's solar resources are consistent — even the lowest PSH areas are economically viable.

Related Calculators

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🏠 Off-Grid Solar Calculator
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💰 Solar Loan Calculator
Calculate EMI and total cost for solar financing.

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