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Suntech Brand review

STP615S-C78/Nsh+

615 Wp TOPCon Bifacial 80%
ComparePV verdict

Middle of its segment, heavy for its output

Rank 3,303 of 14,129
Compare panels Datasheet PDF
Power (Wp)
615
Typical for its class
Efficiency (%)
22.00
Weak · bottom 7%
Density (Wp/m²)
220.0
Weak · bottom 6%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
35.1
Weak · 2.3 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The Ultra V Pro Plus series is an advanced line of photovoltaic modules built around N-Type TOPCon cells, combining high conversion efficiency with a low temperature coefficient so panels perform better on hot summer days than older-generation designs. The use of half-cut cell technology together with a multi-busbar interconnection scheme reduces resistive losses and improves resistance to microcracks and partial shading, translating into more stable energy yield throughout the system's operating life. The bifacial glass-glass construction also captures reflected radiation from the ground, generating extra energy gain without increasing the installed footprint, which makes this series attractive for both rooftop installations and ground-mounted solar farms. A reinforced frame and high-strength glass deliver strong resistance to snow and wind loads, while additional certifications confirm resistance to coastal conditions and ammonia exposure, broadening the range of suitable applications to include agricultural and industrial sites. Backed by a long-term linear power warranty, the Ultra V Pro Plus series is a secure investment choice for commercial developers and homeowners alike, seeking a reliable, modern photovoltaic solution with a low levelized cost of energy (LCOE).

Ranking

1,085 panels in the segment TOPCon 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.00% 22.80% Weak · bottom 7% 6,580
Power density 220.0 227.7 Weak · bottom 6% 6,719
Temperature coefficient -0.290 -0.290 Typical 2,220
Weight per kWp 57.1 53.1 Weak · bottom 3% 11,128
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Residential, commercial, utility-scale, shaded-installations and hot-climate.

Not ideal for

Weight-limited structures, roofs where every square metre has to count and tight roof space.

Watch-outs
57.1 kg per kWp

Bottom 3% of the TOPCon 600-650 W segment, against a median of 53.1. Ranked 11,128th in the whole database.

220.0 watts per square metre

Bottom 6% of the TOPCon 600-650 W segment, against a median of 227.7. Ranked 6,719th in the whole database.

22.00% module efficiency

Bottom 7% of the TOPCon 600-650 W segment, against a median of 22.80%. Ranked 6,580th in the whole database.

Notes from the database
  • Module efficiency of 22.0% is 0.8pp below average for TOPCon 600-650W panels (median: 22.8%)
  • At 220.0 W/m², this panel generates 7.7 W/m² less per unit area than TOPCon 600-650W median (227.7 W/m²)
  • At -0.29%/°C, hot weather performance is typical for TOPCon 600-650W panels
  • Weight of 35.1 kg is 2.3 kg above TOPCon 600-650W median (32.8 kg) - verify structural support
  • Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof

Specifications

Open datasheet PDF
Nominal power (Pmax) 615 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.00 % Weak Segment median 22.80%
Vmpp · Impp 45.66 V · 13.47 A Operating point at max power
Voc · Isc 55.43 V · 14.19 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2465×1134×35 mm · 2.80 m² of roof
Weight 35.1 kg Weak Weak · 2.3 kg above median
Cells 156 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.046 %/°C
NOCT 42 °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 87.4 % Equals 538 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Suntech in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 615 Wp appear here. The rest cover the whole series.

30-Year Power Degradation Curve (Linear Warranty) 30-Year Power Degradation Curve (Linear 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
-0.290 %/°C against a segment median of -0.290
-
Bifacial gain
Rear gain over light concrete: -
-

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

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Suntech STP615S-C78/Nsh+ 615 W 22.00% -0.290 35.1 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +35 W, lighter, +3.2 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +30 W, lighter, +3.0 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg Cooler, lighter, +2.8 pp
LR8-66HVD-665M 665 W 24.62% -0.260 33.5 kg +50 W, cooler, +2.6 pp
JKM650-670N-66QL6-BDV (665W class) 665 W 24.62% -0.260 32.5 kg +50 W, cooler, +2.6 pp
HY665-B144DSS 665 W 24.62% -0.260 27.6 kg +50 W, lighter, +2.6 pp
SPDG665-BC132R12 665 W 24.62% -0.260 33.5 kg +50 W, cooler, +2.6 pp
STP570S-C78/Pmh+ 570 W 20.40% -0.340 35.5 kg -45 W, hotter, -1.6 pp
STP570S-C78/Pmhg 570 W 20.40% -0.360 31.1 kg Hotter, -1.6 pp, -5 yr warranty
STP575S-C78/Pmh+ 575 W 20.60% -0.340 35.5 kg -40 W, hotter, -1.4 pp
STP575S-C78/Pmhg 575 W 20.60% -0.360 31.1 kg Hotter, -1.4 pp, -5 yr warranty
STP580S-C78/Pmh+ 580 W 20.70% -0.340 35.5 kg -35 W, hotter, -1.3 pp
STP580S-C78/Pmhg 580 W 20.80% -0.360 31.1 kg Hotter, -1.2 pp, -5 yr warranty
STP585S-C78/Pmh+ 585 W 20.90% -0.340 35.1 kg -30 W, hotter, -1.1 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +65 W, lighter, +3.2 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +60 W, lighter, +3.0 pp

Found 616 panels of the same or similar size to this one, within ±10 mm. See them here Found 616 panels of the same or similar size to this one, within ±25 mm. See them here Found 616 panels of the same or similar size to this one, within ±50 mm. See them here Found 1838 panels of the same or similar size to this one, within ±100 mm. See them here

About the Ultra V Pro Plus series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

Are Suntech Ultra V Pro Plus panels still available for purchase?
The Ultra V Pro Plus series has been discontinued and is being phased out in favor of newer models in Suntech's lineup. Availability is now limited to remaining distributor stock. Anyone interested in this series should confirm current stock with their supplier before planning a larger installation, since sourcing identical modules later may not be possible.
How does the N-Type TOPCon technology in Ultra V Pro Plus differ from older PERC panels?
The N-Type TOPCon cells used in Ultra V Pro Plus offer higher conversion efficiency and a lower temperature coefficient than traditional P-type PERC cells. This means a smaller power drop during hot weather and slower degradation over time. In practice, the panel produces more annual energy per roof area than a comparable older-generation module.
What benefit does the bifacial double-glass design provide in Ultra V Pro Plus panels?
The dual-sided design also captures light reflected from the ground, roof, or snow, which on bright surfaces (such as white gravel or metal roofing) can add several extra percentage points of energy without increasing the array footprint. The double-glass construction also improves mechanical durability and moisture resistance compared to single-sided modules with a backsheet.
What is the product and power warranty for the Ultra V Pro Plus series?
Suntech provides a 15-year product warranty along with a 30-year linear power warranty for the Ultra V Pro Plus series. This power warranty length is typical for modern TOPCon panels and means the manufacturer guarantees a specified minimum energy output even after three decades of operation, which matters when calculating return on investment.
Are Ultra V Pro Plus panels suitable for agricultural or industrial installations near the coast?
Yes, the series carries additional certifications confirming resistance to coastal conditions (salt corrosion) and ammonia exposure, making it suitable for livestock buildings, wastewater facilities, or coastal installations. The reinforced frame and high-strength glass also provide strong resistance to snow and wind loads.
What is the maximum power output of the Suntech Ultra V Pro Plus module, and who is it best suited for?
The modules reach a maximum power of up to 625 Wp, placing them among high-power panels intended mainly for large commercial installations and ground-mounted PV farms, where minimizing the number of modules per kilowatt matters most. Due to the large size and weight of such panels, smaller sloped-roof installations should consider lower-power models within the same product family.
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