Tenax International Company Limited has been awarded a turnkey rooftop solar EPC contract for an 86.8 kWp grid-tied photovoltaic plant at a ready-made garment manufacturing facility in Dhaka, Bangladesh.
The plant will be installed across five zones of the factory’s existing roof, carrying 140 high-efficiency N-type modules feeding a single 80 kW grid-tied inverter under net metering. Estimated first-year generation is more than 114,800 kWh, avoiding around 75 tonnes of CO₂ annually.
Because the output is consumed on site during working hours, the plant displaces grid purchases directly rather than exporting surplus — the arrangement that gives the shortest payback in Bangladesh’s industrial tariff structure. Over a 25-year design life it also produces metered generation data the facility can cite in buyer-facing ESG and sustainability reporting, which is increasingly a commercial requirement rather than a nicety in the RMG export sector.
Scope of work
Tenax holds single-point responsibility for the full delivery:
System design and electrical engineering
Structural verification of the existing roof
Supply of modules, inverter, mounting structure and balance of plant
Installation and commissioning
Net-metering application and utility approval
Testing, documentation and handover
System at a glance
DC capacity — 86.8 kWp
Modules — 140 × high-efficiency N-type
Inverter — 80 kW, grid-tied
Configuration — Seven strings, one per MPPT tracker
Roof zones — Five
Metering — Net metering
Estimated year-one generation — 114,800+ kWh
Estimated CO₂ avoided — approximately 75 tonnes per year
Design life — 25 years
Location — Dhaka, Bangladesh
A technical review worth having
Before award, the client’s engineering team reviewed our string design in detail and raised specific questions about voltage headroom and per-tracker current limits. We answered each point in writing, issued a formal technical note setting out the calculations, and revised the array configuration to seven strings of twenty modules — one string per MPPT tracker, with every parameter comfortably inside the inverter’s rated limits.
We would rather have that conversation before the modules are on the roof than after. The design is stronger for it, and so is the working relationship.
“A roof on a garment factory is usually the largest asset on the site doing nothing at all. Our job is to turn it into generation without interrupting a single shift on the floor below. This client’s engineers held us to a proper standard during review, and the plant they are getting is better for it.”