Loading
1.2 MW rooftop plant, 4H Group
A 1.2 MW on-grid plant with maintenance walkways on a packaging factory roof.
- Capacity
- 1.2 MW
- System
- On-grid
- Location
- Chattogram
- Completed
- Aug 2025
Project overview
A 1.2 MW on-grid rooftop plant for 4H Group's Islam Pack & Accessories factory in Chattogram, built with full-length maintenance walkways so the factory's own staff can clean and inspect it.
The challenge
Chattogram's salty, humid air shortens the life of ordinary steel fixings, and the factory needed a plant its own maintenance team could look after safely.
Our solution
We used anodised aluminium rails and stainless fasteners throughout and laid blue FRP walkways between every block. The inverter station was placed at ground level beside the main LT panel for short AC runs and easy access.
How it was delivered
- 1
Design
Roof survey, salt-air material selection and layout.
- 2
Installation
Structure, modules and walkways in 7 weeks.
- 3
Handover
Commissioning, staff training and monitoring set-up.
Results
- Installed capacity
- 1.2 MW
- Expected yearly generation
- ≈1.65 GWh
- Of daytime load covered
- ≈30%
- Estimated payback
- 5 yrs
Photos from site
5 photos. Select one to view it full screen.
Equipment used
| Item | Brand | Quantity |
|---|---|---|
| N-type modules, 585 W | TW Solar | 2,052 |
| String inverters | Growatt | 10 |
| FRP maintenance walkways | Local supply | 1,100 m |
| Lightning protection and earthing | Exclusive Solutions | Full system |
The walkways make cleaning simple for our own staff, and the monthly reports show exactly what the plant is saving us.
Plan a project like this one
Share your site and monthly bill. We will send references from similar projects and book a free survey.