Frequently Asked Questions & Guidance

Yes, 100%. We provide complete end-to-end turnkey liaison: from single-line diagram (SLD) engineering and structural vetting, through submission to your local utility distribution company (BPDB, DPDC, DESCO, BREB, NESCO) and SREDA, to final testing and bi-directional meter commissioning.

According to SREDA guidelines, the capacity of the rooftop solar system can be up to 70% of the sanctioned electrical load (or transformer rating) of your facility. For example, if your factory has a 1,000 kVA transformer, you can install up to a 700 kWp rooftop solar plant under net metering.

N-Type Bifacial panels generate electricity from both sides. The front absorbs direct sunlight, while the rear captures reflected ambient light (albedo) from the roof surface, yielding up to 10%–25% more energy compared to traditional monofacial panels. They also offer a lower temperature coefficient (-0.30%/°C) and negligible light-induced degradation (LID).

Absolutely. All our mounting frameworks are fabricated from 80+ micron hot-dip galvanized steel or anodized AL6005-T5 structural aluminum. They are custom-engineered using finite element analysis (FEA) to withstand coastal wind gusts of 160–180 km/h, fully complying with Bangladesh National Building Code (BNBC) wind load standards.

On-Grid systems synchronize directly with the utility grid to enable net metering without expensive batteries, offering the fastest 3-year ROI. Hybrid systems include lithium battery energy storage (ESS) to provide uninterruptible instant power during grid load shedding while still maintaining net-metering benefits. Off-grid systems operate completely independently in remote areas without grid access.

Solar panels do not need hot direct sun to generate power; they respond to daylight photon irradiance. Even during heavy overcast or rainy days in Bangladesh, modern Tier-1 monocrystalline panels generate approximately 20%–35% of their rated capacity. Over the full 12-month annual cycle, Bangladesh yields an average of 4.2 to 4.5 peak sun hours per day.

Yes. Solar rooftop projects in Bangladesh are eligible for concessional green financing from IDCOL, Bangladesh Bank Green Refinance Scheme, and commercial banks at attractive single-digit interest rates with 5–7 year repayment tenures.

Our turnkey EPC quote includes: 3D drone & structural audit, Tier-1 bifacial panels, European smart inverters, hot-dip galvanized mounting structures, DC/AC cabling, earthing & lightning protection, smart bi-directional net metering panels, complete installation, and SREDA liaison.

No. Our engineering workflows are designed for zero factory downtime. Cable pulling and structural assembly take place on the roof during normal shifts, while the final grid synchronization and electrical interconnection are scheduled during off-peak weekend maintenance windows.

No. For standing seam metal roofs, we utilize non-penetrating aluminum seam clamps that do not puncture the sheet. For standard corrugated sheets, we use specialized EPDM weather-sealed fasteners and dual silicone sealant boots that guarantee zero water ingress and protect your roof for decades.

During dry winter months (November to March), dust accumulation can reduce output by 5%–10%. We recommend bi-weekly or monthly automated water washing. Net Bangla Solar Energy Solutions provides high-pressure wash systems, water pipeline engineering on rooftops, and robotic or manual cleaning services under our annual O&M contracts.

Net Bangla Limited is committed to delivering reliable, high-quality solar energy solutions backed by comprehensive warranties and dependable after-sales support: (1) Solar PV Modules: 25-year linear performance warranty and 12-year product warranty. (2) Solar Inverters: 5-year manufacturer warranty, with extended coverage available subject to manufacturer terms. (3) Mounting Structures: 10-year structural warranty, with a 20-year design life. (4) Storage Systems: 5-year manufacturer warranty, subject to applicable product and performance conditions. (5) Operation & Maintenance (O&M): Comprehensive maintenance and technical support for up to 5 years, as per project requirements. (6) Installation Workmanship: Defect rectification in accordance with the contractual Defects Liability Period and agreed warranty conditions.

Because solar photovoltaic modules operate suspended over water, continuous evaporative cooling acts as a natural heatsink. Cooler operating temperatures mitigate thermal efficiency loss, yielding 10% to 15% more kilowatt-hours per installed watt compared to hot land-based or tin rooftop installations.

Yes, absolutely. In Bangladesh, industrial facilities with mandatory firefighting water reservoirs or ETP retention basins can install floating solar directly on the open water. This generates clean megawatt-scale electricity for factory machinery with zero floor space occupied, and reduces reservoir water evaporation by up to 33%.

Systems are engineered using food-grade, UV-stabilized High-Density Polyethylene (HDPE) pontoon floats connected with marine-grade stainless fasteners. They are anchored to the water bed using adaptive elastic mooring lines engineered to withstand 4-meter water level shifts and 160 km/h cyclone wind gusts.