Tier-1 Solar PV Modules for Factories & Warehouses

This page covers the modules themselves: which tier-1 PV modules we supply for factory and warehouse roofs, how they are sized and what they cost. For the full picture on commercial rooftop solar panels in Indonesia — system sizes, roof area, PLN permitting and capex vs PPA — see our rooftop EPC page. The key decisions are in the numbers: how many Wp per module, how many fit on your roof, and what annual yield is realistic in Indonesia's climate. We start every project from that calculation, not from the cheapest price list.

For large factory and warehouse roofs we typically use Tier-1 monocrystalline modules of 550–620 Wp with 21%+ efficiency and low degradation, so output stays high into year 25. Module selection accounts for roof load, orientation and operating temperature — in a hot climate, the module temperature coefficient has a real effect on daily output.

Typical module quantities per system size

Most of our rooftop projects sit between 200 kWp and 2 MWp. As a rough guide, 1 MWp of rooftop solar needs about 5,000–6,000 m² of roof and produces around 1,300–1,500 MWh per year at a typical Indonesian site. With 550–620 Wp modules, a 200 kWp roof takes roughly 320–365 modules and 1 MWp roughly 1,610–1,820 modules; the exact count follows the string layout around skylights, vents and walkways.

Components & scope

• Tier-1 monocrystalline modules (PERC / TOPCon) 550–620 Wp.
• String-layout optimisation to minimise shading and mismatch losses.
• Integration with inverters and mounting structures.
• Solar DC cabling, MC4 connectors, protection and grounding to standard.

Who it's for

Ideal for manufacturing plants, logistics warehouses, cold storage, malls and office buildings with high daytime power use — where self-consumption is highest and payback fastest.

Installation timeline

For 200–500 kWp systems, module installation usually takes 3–6 weeks once design and materials are ready. MWp-scale ground-mount projects take longer.

ROI & savings

With industrial PLN tariffs and a healthy self-consumption ratio, payback lands in the 5–8 year range, with electricity savings continuing across the 25+ year module life.

Indicative installed price per kWp

The 2026 benchmark below is indicative — final figures follow the feasibility study, roof type and components:

Indicative — request the catalog for a project-specific quote.

We install commercial solar across Indonesia — most often in the Cikarang and Karawang industrial estates and Tangerang logistics belt. For a full package see our EPC services.

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