Longi
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What is the Longi collection and what does it contribute to your installation?
The Longi collection brings together high-performance monocrystalline photovoltaic panels, with monofacial and bifacial N-Type versions designed to maximize annual production and long-term reliability. Thanks to their 108/132/144 cell formats, they allow excellent use of roof space and simplify string design for residential, commercial, and industrial applications. Sales are offered by unit, packs of 10, and pallets to streamline purchasing and logistics.
Advantages and limitations
- High power density per module and competitive thermal coefficients for hot climates.
- N-Type technology (depending on model) with lower degradation and higher stable performance.
- Bifacial options that add gain from the rear side on high-albedo surfaces.
- Wide compatibility with 1F/3F inverters with modern MPPT windows.
- Limitations: check Voc at minimum temperature and maximum Isc; for high-current models, “High Current” inverters are recommended.
Recommended applications
- Residential self-consumption on pitched roofs with coplanar structures.
- Commercial/industrial on ground or flat roof with multiple MPPT.
- Plants and canopies with bifacial panels to take advantage of albedo.
- Efficient purchasing through panel packs and pallets.
How to choose your Longi panel
- Power and size: select the power that fits the roof geometry to reduce the number of modules.
- Electrical sizing: calculate modules per string with margin over the maximum Voc at minimum temperature and Isc at peak irradiance.
- Mono vs. bifacial: on standard roofs, monofacial simplifies; on elevated structures or light-colored ground, bifacial adds production.
- Compatibility: use optimizers if there are shadows or mixed orientations.
Indicative specifications (depending on series)
| Nominal power | ≈ 480–640 W |
| Cell type | Mono PERC / N-Type (advanced models) |
| Format | 108 / 132 / 144 cells |
| Module efficiency | ≈ 20–23 % |
| Options | Monofacial or bifacial N-Type |
| Presentation | Unit / Pack 10 / Pallet |
Installation best practices
- Coordinate protections in direct current (disconnection, fuses, and SPD) and in alternating current.
- Respect tightening torques and bending radii; plan connectors and cable management.
- For bifacial panels, increase ground clearance and use high-albedo surfaces to maximize rear side output.
- Combine with equivalent monocrystalline panels when visual homogeneity on the façade is required.
Quick comparisons
- LR7 108c ~480 W: compact format for residences with limited roof space.
- LR7 144c ~640 W: higher power per module to reduce structure and installation time.
- LR8 132c bifacial ~610 W: ideal for ground installations with good albedo and elevated structure.
Related collections
With Longi you get efficient, reliable modules with available N-Type technology, ready for demanding projects seeking maximum energy per surface area and a solid, long-lasting installation.
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