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Weran Solar WR7-72HVD-640M
Weran Solar Brand review

WR7-72HVD-640M

640 Wp Monocrystalline Bifacial 70%
ComparePV verdict

Space saver, no clear weak spot

Rank 1,271 of 14,005
Compare panels Datasheet PDF
Power (Wp)
640
Typical for its class
Efficiency (%)
23.70
Strong · top 6%
Density (Wp/m²)
236.9
Strong · top 6%
Temp (%/°C)
-0.260
Strong · top 8%
Weight (kg)
33.5
Typical · median 32.5 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Weran Solar HPBC 2.0 WR7-72HVD series are modules designed for large-scale installations where high energy yield per square meter and real cost savings in construction and cabling are crucial. The use of back contact (BC) technology means that connections are moved to the back of the module - this allows the panel to better utilize sunlight and reduces losses due to shading from mounting structures. In practice, this translates to more stable energy production in Polish conditions, even in poor weather and with lower solar irradiance.

These are bifacial modules, meaning they can also utilize reflected light from the ground - this is particularly beneficial on PV farms, roofs with light-colored membranes, and ground-mounted installations in industrial areas. The series also features high durability and reliability in demanding scenarios, such as on heated roof surfaces of warehouses.

The WR7-72HVD would be a good choice for investors, EPC companies, and businesses that want to maximize yield and reduce LCOE without compromising on durability.

Ranking

5,871 panels in the 540-740 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 23.70% 22.40% Strong · top 6% 517
Power density 236.9 224.0 Strong · top 6% 521
Temperature coefficient -0.260 -0.300 Strong · top 8% 511
Weight per kWp 52.3 53.0 Typical 5,829
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 0 caution
Best for

Utility-scale and commercial.

Strengths
236.9 watts per square metre

Top 6% of the 540-740 W band, against a median of 224.0. Ranked 521st in the whole database.

23.70% module efficiency

Top 6% of the 540-740 W band, against a median of 22.40%. Ranked 517th in the whole database.

-0.260 %/°C temperature coefficient

Top 8% of the 540-740 W band, against a median of -0.300. Ranked 511th in the whole database.

Notes from the database
  • At 23.7% efficiency, this panel is 1.9pp above typical database modules (median: 21.8%)
  • 236.9 W/m² power density - 18.8 W/m² more than database median (218.1 W/m²), more power per roof area
  • At -0.26%/°C (vs median -0.30%/°C), loses ~2% less power in hot conditions
  • At 33.5 kg (7.0 kg above database median of 26.5 kg), requires checking roof load capacity
  • Bifacial design (70% factor) captures reflected light - adds 4-10% yield on ground-mount or white roof

Specifications

Open datasheet PDF
Nominal power (Pmax) 640 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.70 % Strong Segment median 22.40%
Vmpp · Impp 44.67 V · 14.33 A Operating point at max power
Voc · Isc 54.02 V · 14.98 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2382×1134×30 mm · 2.70 m² of roof
Weight 33.5 kg Typical Typical · median 32.5 kg
Cells 144 Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.260 %/°C Strong top 8% of its segment
Coefficient Voc · Isc -0.200 · 0.050 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 88.8 % Equals 569 W guaranteed
Degradation 1.00 → 0.35 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Weran Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 640 Wp appear here. The rest cover the whole series.

30-Year Power Warranty 30-Year Power Warranty Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-
With bifacial gain
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.260 %/°C against a segment median of -0.300
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Alternatives

All Weran Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Weran Solar WR7-72HVD-640M 640 W 23.70% -0.260 33.5 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +10 W, lighter, +1.5 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +40 W, lighter, +1.5 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +35 W, lighter, +1.3 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Lighter, +1.3 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg +30 W, lighter, +1.1 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg +30 W, lighter, +1.1 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg Lighter, +1.1 pp
LR7-72HTH 595M 595 W 22.00% -0.280 28.5 kg Lighter, -1.7 pp, -5 yr warranty
LR7-72HTH 600M 600 W 22.20% -0.280 28.5 kg Lighter, -1.5 pp, -5 yr warranty
LR7-72HTH 605M 605 W 22.40% -0.280 28.5 kg Lighter, -1.3 pp, -5 yr warranty
LR7-72HTH 610M 610 W 22.60% -0.280 28.5 kg Lighter, -1.1 pp, -5 yr warranty
LR7-72HTH 615M 615 W 22.80% -0.280 28.5 kg Lighter, -0.9 pp, -5 yr warranty
LR7-72HTH 620M 620 W 23.00% -0.280 28.5 kg Lighter, -0.7 pp, -5 yr warranty
WR7-72HVD-645M 645 W 23.90% -0.260 33.5 kg Very close match
WR7-72HVD-650M 650 W 24.10% -0.260 33.5 kg +10 W, +0.4 pp
WR7-72HVD-655M 655 W 24.20% -0.260 33.5 kg +15 W, +0.5 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +60 W, heavier, +1.3 pp

Found 1119 panels of the same or similar size to this one, within ±10 mm. See them here Found 1125 panels of the same or similar size to this one, within ±25 mm. See them here Found 1236 panels of the same or similar size to this one, within ±50 mm. See them here Found 1917 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How does HPBC 2.0 technology in the WR7-72HVD panels differ from standard modules with front-side busbars?
With HPBC (back contact) technology, all electrical connections of the cell are moved to the rear of the panel. This means the front surface has no visible busbars, which in classic modules shade part of the cell area and reduce yield. In practice, this results in better use of incoming light and higher conversion efficiency, especially at low sun angles, such as early morning or winter.
Do bifacial WR7-72HVD panels require special installation to reach their full potential?
To let bifacial modules generate real extra energy from the rear side, they should ideally be mounted on racking with a gap above the ground, over light-colored or reflective surfaces such as white gravel, a roofing membrane, or grass. On PV farms and industrial roofs with light-colored covering, the bifacial gain is often most noticeable. Standard mounting still works, but without a reflective surface, rear-side yield will be minimal.
What warranty comes with Weran Solar HPBC 2.0 WR7-72HVD panels?
The series is covered by a 15-year product warranty against material and workmanship defects, plus a 30-year linear power warranty guaranteeing a high percentage of nominal output after three decades of operation. This matches the standard offered by leading premium panel manufacturers and is an important factor when calculating long-term investment payback.
Are WR7-72HVD 640~665M panels suited for large ground-mount installations or PV farms, or mainly for residential roofs?
This series is designed primarily for large-scale installations - PV farms, industrial sites, and commercial projects - where maximizing yield per area and lowering BoS costs (racking and cabling) per watt matter most. A single module's high power output, up to 665 Wp, means fewer panels are needed for a given system capacity, which meaningfully speeds up installation on large roof and ground-mount areas.
Do HPBC 2.0 WR7-72HVD panels perform well on hot industrial rooftops?
Yes, the series is engineered to handle demanding thermal conditions typical of large industrial roofs that heat up on sunny days. The back-contact cell design and material quality provide stable energy production and mechanical durability even at elevated operating temperatures, resulting in lower power losses compared to many classic modules under the same conditions.
Is Weran Solar a Tier 1 manufacturer, and does that matter when choosing WR7-72HVD panels?
Weran Solar is not currently listed as a Tier 1 manufacturer under the Bloomberg NEF classification, which may matter to institutional investors and banks financing large projects when assessing risk. For private investments and smaller commercial projects, Tier 1 status is less practically relevant - what matters most is the module's technical parameters, warranty terms, and overall build quality and service support.
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