--- title: "Suntech STP625S-C78/Nsh+ Solar Panel: Specs & Datasheet | ComparePV" description: "Suntech STP625S-C78/Nsh+ solar panel. Specs: 22.40% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/wuxi-suntech-power-co-ltd-stp625s-c78-nsh" image: "https://comparepv.com/og/panel/wuxi-suntech-power-co-ltd-stp625s-c78-nsh.png" updated: 2026-09-11 --- # Suntech STP625S-C78/Nsh+ Middle of its segment, heavy for its output 1,085 panels in the segment TOPCon 600-650 W ## Identity - **Manufacturer:** Suntech - **Model:** STP625S-C78/Nsh+ - **Series:** Ultra V Pro Plus - **Rated power:** 625 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 600-650 W (1085 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 625 W | 620 W | Typical | | | Module efficiency | 22.40% | 22.80% | Weak - bottom 23% | 4,834 | | Power density | 223.6 | 227.7 | Weak - bottom 18% | 5,017 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight (kg) | 35.1 kg | 32.8 kg | Weak - bottom 6% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.40% | 22.80% | Weak - bottom 23% | 4,834 | | Power density | 223.6 | 227.7 | Weak - bottom 18% | 5,017 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,220 | | Weight per kWp | 56.2 | 53.1 | Weak - bottom 6% | 10,525 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **56.2 kg per kWp** - Bottom 6% of the TOPCon 600-650 W segment, against a median of 53.1. Ranked 10,525th in the whole database. - **223.6 watts per square metre** - Bottom 18% of the TOPCon 600-650 W segment, against a median of 227.7. - **22.40% module efficiency** - Bottom 23% of the TOPCon 600-650 W segment, against a median of 22.80%. - **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. ## Specification ### Electrical - **Rated power (Pmax):** 625 W - **Efficiency:** 22.40 % - **Voltage at Pmax (Vmp):** 45.86 V - **Current at Pmax (Imp):** 13.63 A - **Open-circuit voltage (Voc):** 55.73 V - **Short-circuit current (Isc):** 14.33 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 156 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 2465 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 35.1 kg - **Area:** 2.80 m2 - **Power density:** 223.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 546 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 4834 of 14129 | | Power density | 5017 of 14129 | | Temperature coefficient | 2220 of 14129 | | Weight | 10525 of 14129 | | Warranty | 21 of 14129 | ## About this series 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). ## Notable figures - At 22.4% efficiency, this panel is on par with typical \*\*TOPCon 600-650W\*\* modules - Power density of 223.6 W/m² is 4.1 W/m² below \*\*TOPCon 600-650W\*\* median (227.7 W/m²) - needs more roof space - Temperature coefficient of -0.29%/°C matches the \*\*TOPCon 600-650W\*\* median - At 35.1 kg (2.3 kg above \*\*TOPCon 600-650W\*\* median of 32.8 kg), requires checking roof load capacity - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### 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. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/EN_STP635S_C78_Nsh-50bd6968d6f6.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +2.8 pp | | [AIKO AIKO-A675-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a675-mde72mw) | 675 W | +50 W, lighter, +2.6 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +2.6 pp | | [WINAICO WST-675BKX72-A2](https://comparepv.com/panel/winaico-wst-675bkx72-a2) | 675 W | +50 W, lighter, +2.6 pp | | [AIKO AIKO-G670-MCH72Mw](https://comparepv.com/panel/aiko-aiko-g670-mch72mw) | 670 W | +45 W, lighter, +2.4 pp | | [Longi Solar LR7-72HVHF-670M](https://comparepv.com/panel/longi-lr7-72hvhf-670m) | 670 W | +45 W, lighter, +2.4 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, lighter, +2.4 pp | | [Suntech STP570S-C78/Pmh+](https://comparepv.com/panel/suntech-stp570s-c78-pmh) | 570 W | -55 W, hotter, -2.0 pp | | [Suntech STP570S-C78/Pmhg](https://comparepv.com/panel/suntech-stp570s-c78-pmhg) | 570 W | -55 W, hotter, -2.0 pp | | [Suntech STP575S-C78/Pmh+](https://comparepv.com/panel/suntech-stp575s-c78-pmh) | 575 W | -50 W, hotter, -1.8 pp | | [Suntech STP575S-C78/Pmhg](https://comparepv.com/panel/suntech-stp575s-c78-pmhg) | 575 W | -50 W, hotter, -1.8 pp | | [Suntech STP580S-C78/Pmh+](https://comparepv.com/panel/suntech-stp580s-c78-pmh) | 580 W | -45 W, hotter, -1.7 pp | | [Suntech STP580S-C78/Pmhg](https://comparepv.com/panel/suntech-stp580s-c78-pmhg) | 580 W | Hotter, -1.6 pp, -5 yr warranty | | [Suntech STP585S-C78/Pmh+](https://comparepv.com/panel/wuxi-suntech-power-co-ltd-stp585s-c78-pmh) | 585 W | -40 W, hotter, -1.5 pp | | [AIKO AIKO-A680-MDE72Mw](https://comparepv.com/panel/aiko-aiko-a680-mde72mw) | 680 W | +55 W, lighter, +2.8 pp | | [AIKO AIKO-A700-MAE78Dw](https://comparepv.com/panel/aiko-aiko-a700-mae78dw) | 700 W | +75 W, cooler, +2.6 pp | --- Source: https://comparepv.com/panel/wuxi-suntech-power-co-ltd-stp625s-c78-nsh Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.