For factory & commercial rooftop owners

Rooftop Solar

Turn idle factory roofs into your cheapest kilowatt-hour.

Q: Will panels leak or damage our metal roof?

On trapezoidal and standing-seam sheet we use clamp-on rails that grip the seam or rib without drilling through the sheet. Where fixings must penetrate, every point is sealed with EPDM washers and covered by our leak-proofing warranty. RCC roofs use ballasted or chemically anchored frames.

Q: Can our roof take the extra weight?

A rooftop array adds roughly 12–15 kg/m² — far less than most people expect. We still survey every purlin, truss and column before design, and if a section is under-strength we either reinforce it or leave it out of the layout.

Q: What about cyclones and monsoon storms?

Mounting structures are designed to the BNBC 2020 basic wind speed for your district, with extra margin on coastal sites in Chattogram, Cox's Bazar and Khulna. Fixings are stainless or hot-dip galvanised to resist salt air and humidity.

Q: How much does dust reduce output?

Unmanaged industrial and road dust can cut yield by 5–15% in the dry season. We set a cleaning cycle — typically every 2–4 weeks from November to April — and monitoring flags any string that drops below its expected output.

Q: Should we choose net-metering or hybrid?

If load-shedding costs you production, choose hybrid: the battery keeps critical lines running. If your feeder is stable and your load is mostly daytime, net-metering without batteries has lower capex and a faster payback. The site assessment models both against your bills.

Q: Can we get rooftop solar without buying it?

Yes. Under a RESCO lease or PPA we finance, own and maintain the plant; you pay only for the units it generates, at a rate below your grid tariff, with an option to buy the system later.

Q: What warranties come with the system?

Typically 12 years on modules with a 30-year linear performance guarantee, 5–10 years on inverters, 10 years or 6,000 cycles on LFP batteries, and 5 years on workmanship and leak-proofing.

Rooftop solar generates at a fraction of the grid tariff on space you already own — with or without batteries, with or without the grid. Engineered for corrugated RMG sheds, RCC commercial roofs, monsoon rain and cyclone-season wind.

Request a Site Assessment Estimate your savings

1.8 MWp hybrid · Gazipur

Typical system: 50 kWp – 3 MWp
Generation cost: Tk 4–6 / kWh
Payback: 3.5 – 6 yrs
Survey to power: 12–16 weeks

What it solves

Four problems on a factory P&L. One roof that fixes them.

Owners don't buy panels — they buy a lower cost per unit, fewer stopped lines and an audit trail their buyers accept.

See rooftop projects

Grid bills that only go up
Every tariff revision lands straight on your cost per garment.
Solar units cost a fraction of the grid tariff, fixed for 25 years.
25–40%lower grid bill
Production lost to load-shedding
A dropped feeder stops dyeing and washing lines mid-batch.
Hybrid designs carry critical lines on battery through the outage.
< 20 msswitchover to battery
Diesel at Tk 28–32 a unit
Gensets are your most expensive, noisiest electricity.
Solar and storage move the genset to last-resort standby.
60–80%less genset runtime
Buyer sustainability audits
Brands ask for renewable share, Scope 2 and CO₂ numbers.
Metered generation and CO₂ reports your auditors can rely on.
Monthlygeneration & CO₂ reports

Off-grid · Hybrid · Net-metering

Three ways to connect a rooftop plant.

The difference is the battery and the grid. Your outage pattern and load profile decide which one pays back best.

Off-grid, hybrid and net-metering rooftop solar compared
Criteria	Fastest paybackOn-gridNet-metering · no battery	HybridGrid + solar + battery	Off-gridNo grid · battery-led
How it works	Solar feeds loads directly; surplus is exported through a bidirectional meter.	Solar serves loads first, the battery stores surplus and backs up outages, the grid fills the gap.	Solar charges a battery bank; the inverter runs your loads with no utility supply.
Grid connection	Required	Required	Not required
Battery storage	No	Sized for critical loads	Sized for full daily load
Runs during load-shedding	No	Yes	Yes
Exports surplus to the grid	Yes	Optional, with approval	No
Indicative capex	Tk 50,000–60,000 / kWp	Tk 80,000–90,000 / kWp	Tk 1.0–1.2 lakh / kWp
Typical payback	3.5–5 yrs	4–6 yrs	2.5–4 yrs vs diesel
Best for	Daytime loads on a stable feeder	RMG & industrial plants with outages	Remote sites, tea estates, rural processing
	Explore On-grid	Explore Hybrid	Explore Off-grid

Grid-tied, no battery

Net-metering in Bangladesh

Under the SREDA Net Metering Guideline, grid-connected rooftop systems can export surplus to DESCO, DPDC, REB/PBS and other distribution utilities, with exported units netted against imports on your bill. System capacity is generally capped at 70% of sanctioned load. We prepare the application, single-line diagram and metering paperwork.

Estimate a net-metered system Net-metering with a battery

Roof suitability

Eight things we check before we quote.

Tick what you already know about your roof. Anything you're unsure of, our structural and shading survey measures on site.

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Suitability

Tick what you know about your roof

Not sure about an item? Leave it — the site survey measures all eight.

Request a Site Assessment

01Shade-free roof area≥ 5,000 sq ftAbout 90 sq ft per kWp including walkways — 5,000 sq ft supports roughly 55 kWp.
02A roof we can mount onMetal sheet or RCCTrapezoidal or standing-seam sheet, or an RCC slab. Asbestos and fibre-cement sheets need replacing first.
03Spare structural capacity≥ 15 kg/m²Modules and rails add 12–15 kg/m². We check purlins, trusses and columns against BNBC 2020.
04Remaining roof life≥ 10 yearsIf sheets are near end of life, re-sheet before installing — dismantling an array later costs more.
05Little shading 9 am – 3 pm< 5% lossWater tanks, parapets, chimneys and neighbouring buildings are mapped in a shading study.
06Safe roof accessStairs or fixed ladderNeeded for installation and the 2–4 week cleaning cycle in dry, dusty months.
07Space in the electrical roomNear LT / MDBRoom for inverters and AC combiner boards and, for hybrid, a ventilated battery bay near the substation.
08Ownership or long lease≥ 10 yearsOwned premises or a lease that outlasts payback. Net-metering needs the utility account in your name.

0/ 8

Suitability

Tick what you know about your roof

Not sure about an item? Leave it — the site survey measures all eight.

Request a Site Assessment

Savings estimator

What would your roof save?

Enter your monthly bill and usable roof area. Switch the connection type to compare all three systems.

Your indicative system

Recommended system size

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Based on bill and roof area

Monthly savings

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Payback period

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Enter your bill and roof area to see a system size, monthly savings and payback. Nothing is sent until you ask for a proposal.

How we estimate

Tk 12/kWh grid tariff (Tk 30/kWh diesel for off-grid), 1,300 kWh/kWp/yr yield, 90 sq ft per kWp, 70% daytime load. Indicative only — not a quotation.

Choose your system

Three ways to put your roof to work.

Net-metered, grid-connected with backup, or fully independent. All three are engineered, installed and maintained by one team.

Start here — most roofs

On-grid Solar

The fastest payback on your roof — generate by day, export the surplus.

Lowest capex per kWp, no battery
Surplus exported under net-metering
Payback typically 3.5–5 years

Typical size: 50 kWp – 5 MWp
Payback: 3.5 – 5 yrs

Explore On-grid Solar Request assessment

For grid-connected plants

Hybrid Solar

Grid savings by day, battery backup through load-shedding.

Battery ride-through for critical lines
Net-metering or zero-export control
Capex, RESCO lease or PPA

Typical size: 50 kWp – 3 MWp
Payback: 4 – 6 yrs

Explore Hybrid Solar Request assessment

For sites beyond the grid

Off-grid Solar

Diesel-free power where the grid doesn't reach — or can't be trusted.

No utility connection needed
LFP bank sized for day and night
Genset becomes standby only

Typical size: 5 kWp – 500 kWp
Payback: 2.5 – 4 yrs (vs diesel)

Explore Off-grid Solar Request assessment

FAQ

Rooftop questions, answered by engineers

Leaks, weight, cyclones, dust and what happens to your bill.

Ask an engineer

On trapezoidal and standing-seam sheet we use clamp-on rails that grip the seam or rib without drilling through the sheet. Where fixings must penetrate, every point is sealed with EPDM washers and covered by our leak-proofing warranty. RCC roofs use ballasted or chemically anchored frames.

A rooftop array adds roughly 12–15 kg/m² — far less than most people expect. We still survey every purlin, truss and column before design, and if a section is under-strength we either reinforce it or leave it out of the layout.

Mounting structures are designed to the BNBC 2020 basic wind speed for your district, with extra margin on coastal sites in Chattogram, Cox's Bazar and Khulna. Fixings are stainless or hot-dip galvanised to resist salt air and humidity.

Unmanaged industrial and road dust can cut yield by 5–15% in the dry season. We set a cleaning cycle — typically every 2–4 weeks from November to April — and monitoring flags any string that drops below its expected output.

If load-shedding costs you production, choose hybrid: the battery keeps critical lines running. If your feeder is stable and your load is mostly daytime, net-metering without batteries has lower capex and a faster payback. The site assessment models both against your bills.

Yes. Under a RESCO lease or PPA we finance, own and maintain the plant; you pay only for the units it generates, at a rate below your grid tariff, with an option to buy the system later.

Typically 12 years on modules with a 30-year linear performance guarantee, 5–10 years on inverters, 10 years or 6,000 cycles on LFP batteries, and 5 years on workmanship and leak-proofing.

Free · no obligation

Find out what your roof can generate.

A structural and shading survey, a sized design and a savings forecast — free, with a written report within 10 working days.

Request a Site Assessment Partner with us (EPC)

What you receive

01Structural & shading survey
02Off-grid, hybrid and net-metering modelled
03Savings forecast and payback period

Prefer to talk? +880 1670797616

Request a Site Assessment

Turn idle factory roofs into your cheapest kilowatt-hour.

Four problems on a factory P&L. One roof that fixes them.

Grid bills that only go up

Production lost to load-shedding

Diesel at Tk 28–32 a unit

Buyer sustainability audits

Three ways to connect a rooftop plant.

Net-metering in Bangladesh

Eight things we check before we quote.

What would your roof save?

Three ways to put your roof to work.

On-grid Solar

Hybrid Solar

Off-grid Solar

Rooftop questions, answered by engineers

Will panels leak or damage our metal roof?

Can our roof take the extra weight?

What about cyclones and monsoon storms?

How much does dust reduce output?

Should we choose net-metering or hybrid?

Can we get rooftop solar without buying it?

What warranties come with the system?

Find out what your roof can generate.