Hongshu Stationery project

Hongshu Stationery · 215 kWp · Metal roof + sunroom structure

A hybrid rooftop solar project combining rail-mounted metal-roof areas with a framed sunroom structure, where string organization and long-term maintainability are central to the delivery logic.

Project overview

This project has an installed capacity of around 215 kWp, using a combined solution of metal-roof mounting and framed sunroom-style structure.

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Key facts

A commercial rooftop project delivered under mixed roof conditions with a stronger focus on string logic and long-term serviceability.

Scale & model

Installed scale: approx. 215 kWp
Module configuration: 399 modules of 540 W
Project type: commercial / industrial rooftop solar
Energy model: self-consumption
Investment model: self-built · self-invested · self-operated
Status: grid-connected and operating

Building & roof conditions

Roof type: metal roof + concrete roof
Metal-roof area: approx. 671 m²
Sunroom area: approx. 553 m²
Site condition: rooftop access, lifting, and working area broadly unconstrained

Construction approach

The metal-roof zones use rail-mounted installation, while the sunroom zone uses a 5-degree double-slope framed structure.

One-line highlight

The strings are relatively complex, so the real focus is system organization and long-term O&M rather than simple installation speed.

Project breakdown

Focus: structure zoning, complex string logic, and long-term operation under hybrid roof conditions.

Project challenge

The project combines metal-roof areas with a framed sunroom structure, creating a mixed structural condition where the roof zones are clearly separated but the string organization.

Roof arrays

The metal-roof zones use rail-based installation, while the sunroom area uses a 5-degree double-slope framed structure.

Electrical & O&M logic

Inverters are positioned close to their relevant roof areas, and all major cable routes are organized through trays to balance waterproofing, safety, and visual order.

Investment & implementation model

The project is self-invested, self-built, and self-operated, without energy storage.

Site results

Site photos, roof conditions, and installation references.

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