Two faces.
One yield story.
Bifacial modules generate from the front and the rear. On reflective ground — white gravel, snow, white roofs — that rear side adds +5–30% energy, and in high-albedo sites the premium pays back in about 0.74 years. Our line is built on 2.0+2.0 mm tempered dual-glass, so the yield gain comes with the durability buyers expect from exposed sites.
| Pmax | 580 W |
|---|---|
| Efficiency | 22.9% |
| Dimensions | 2278×1134 mm |
| Warranty | 15 / 30 yr |
Albedo is free energy
The rear side of the module captures light reflected by the ground — and how much it captures depends on albedo, the reflectivity of the surface below. On grass (albedo ~0.2) expect roughly +5–8%; on white roofs, snow or light gravel (albedo 0.5–0.8) the gain climbs to +20–30%. Three things decide the real number on your site:
- Surface — white membranes, gravel and snow return the most light to the rear cells
- Mounting height — elevated mounts and single-axis trackers open the rear view: tracker LCOE already reaches USD 37/MWh
- 2.0+2.0 mm dual-glass — both faces are tempered glass, so the rear cells are protected like the front, with no backsheet to corrode
The cost math is straightforward: a 2.5–6% price premium versus up to 30% gain. On high-albedo sites the payback can land around 0.74 years — the rest of the 30-year warranty is margin.
Bifacial dual-glass across the power range
From 430 W rooftop formats to 720 W utility glass — 2.0+2.0 mm tempered dual-glass as standard on every model.
| Model | Pmax | Efficiency | Dimensions | Weight | Bifaciality | Format |
|---|---|---|---|---|---|---|
| EMS-430B-108 | 430 W | 22.0% | 1762×1134 mm | 23.4 kg | ≥80% | 54-cell dual-glass |
| EMS-440B-108 | 440 W | 22.1% | 1762×1134 mm | 23.5 kg | ≥80% | 54-cell dual-glass |
| EMS-460B-120 | 460 W | 22.3% | 1909×1134 mm | 24.6 kg | ≥80% | 60-cell dual-glass |
| EMS-500B-132 | 500 W | 22.5% | 2094×1134 mm | 26.2 kg | ≥80% | 66-cell dual-glass |
| EMS-560B-144 | 560 W | 22.8% | 2278×1134 mm | 28.0 kg | ≥80% | 72-cell dual-glass |
| EMS-580B-144 | 580 W | 22.9% | 2278×1134 mm | 28.5 kg | 84.95% | 72-cell dual-glass |
| EMS-620B-132 | 620 W | 23.0% | 2384×1303 mm | 32.5 kg | ≥80% | 66-cell dual-glass |
| EMS-660B-132 | 660 W | 23.1% | 2384×1303 mm | 33.0 kg | ≥85% | 66-cell dual-glass |
| EMS-700B-132 | 700 W | 23.3% | 2384×1303 mm | 33.6 kg | ≥85% | 66-cell dual-glass |
| EMS-720B-132 | 720 W | 23.5% | 2384×1303 mm | 34.2 kg | ≥85% | 66-cell dual-glass |
All values at STC, ±3% Pmax tolerance; rear-side gain of +5–30% by albedo is not included in STC figures. 3.2 mm front-glass option for harsher sites; Class A fire rating available.
Three numbers importers quote back to us
+5–30%
Rear-side energy by albedo — white roofs, snow and light gravel return the most light, and elevated mounts multiply the effect.
2.0+2.0 mm glass
No backsheet on the rear face — IEC 61701 salt-mist and IEC 62716 ammonia options cover coastal, farm and desert sites.
30 yr linear
0.4%/yr degradation to 87.4% at year 30, factory-backed and transferable — the bankability sheet your financier asks for.
Where the rear side earns its keep
Single-axis trackers
Elevated rows open the rear view — tracker LCOE already reaches USD 37/MWh, and bifacial adds the last yield points.
Elevated canopies
Raised mounting over paving adds +10–20% rear gain on the same footprint as the car park.
Raised rows
Panels over crops and grazing capture soil and plant-reflected light — a market that crossed USD 5.5B.
White-membrane roofs
Light-colored roofing membranes return +20–30% to the rear cells, and dual-glass keeps roof loads in check.
Before you send the RFQ
Answers to the four questions that decide a bifacial order. The full 16-question FAQ covers MOQ, shipping and warranty terms.
Full FAQWhen does bifacial NOT pay for itself?
Is dual-glass stronger than a backsheet module?
Which certificates ship with bifacial modules?
What warranty applies?
Tell us the ground — we'll size the gain.
Send site type, quantity and destination port — quote with albedo math in 24 h.
