---
title: "Suntech STP430S-C54/Nshtb+ Solar Panel: Specs & Datasheet | ComparePV"
description: "Suntech STP430S-C54/Nshtb+ solar panel. Specs: 22.02% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient."
source: "https://comparepv.com/panel/wuxi-suntech-power-co-ltd-stp430s-c54-nshtb"
image: "https://comparepv.com/og/panel/wuxi-suntech-power-co-ltd-stp430s-c54-nshtb.png"
updated: 2026-09-11
---

# Suntech STP430S-C54/Nshtb+

Solid all-round for its segment

1,220 panels in the segment TOPCon 400-450 W


## Identity

- **Manufacturer:** Suntech
- **Model:** STP430S-C54/Nshtb+
- **Series:** Ultra T 1.0
- **Rated power:** 430 W
- **Cell technology:** TOPCon
- **Bifacial:** yes


## How it compares

Compared against segment TOPCon 400-450 W (1220 panels).


| Measure | This panel | Segment median | Standing | Rank |
| --- | --- | --- | --- | --- |
| Power (Wp) | 430 W | 435 W | Typical |  |
| Module efficiency | 22.02% | 22.00% | Typical | 6,392 |
| Power density | 220.2 | 220.2 | Typical | 6,544 |
| Temperature coefficient | -0.300 | -0.290 | Typical | 6,152 |
| Weight (kg) | 21.5 kg | 22.0 kg | Typical |  |
| Performance warranty | 30 yrs | 30 yrs | Typical | 21 |


### Full peer table


| Measure | This panel | Segment median | Standing | Rank |
| --- | --- | --- | --- | --- |
| Module efficiency | 22.02% | 22.00% | Typical | 6,392 |
| Power density | 220.2 | 220.2 | Typical | 6,544 |
| Temperature coefficient | -0.300 | -0.290 | Typical | 6,152 |
| Weight per kWp | 50.0 | 51.5 | Typical | 3,329 |
| Performance warranty | 30 yrs | 30 yrs | Typical | 21 |

- **Best for:** Commercial, utility-scale and shaded-installations.


## Specification


### Electrical

- **Rated power (Pmax):** 430 W
- **Efficiency:** 22.02 %
- **Voltage at Pmax (Vmp):** 32.30 V
- **Current at Pmax (Imp):** 13.32 A
- **Open-circuit voltage (Voc):** 38.90 V
- **Short-circuit current (Isc):** 13.99 A
- **Max system voltage:** 1500 V


### Temperature

- **Temperature coefficient of Pmax:** -0.300 %/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:** 108
- **Bifacial:** yes


### Physical

- **Length:** 1722 mm
- **Width:** 1134 mm
- **Thickness:** 30 mm
- **Weight:** 21.5 kg
- **Area:** 1.95 m2
- **Power density:** 220.2 Wp/m2


### Warranty and degradation

- **Product warranty:** 12 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:** 376 W


## Rank in the whole catalogue


| Measure | Position |
| --- | --- |
| Efficiency | 6392 of 14129 |
| Power density | 6544 of 14129 |
| Temperature coefficient | 6152 of 14129 |
| Weight | 3329 of 14129 |
| Warranty | 21 of 14129 |


## About this series

The Ultra T 1.0 series brings together **N-type TOPCon** cells and half-cut cell technology, reducing resistive losses and improving performance stability under demanding irradiance conditions. Built as a framed, double-glass bifacial module, it offers strong mechanical rigidity and resistance to snow and wind loads, making it a solid choice for commercial and industrial installations where long-term durability matters most. Thanks to **multi busbar technology**, the panels make better use of incoming light and collect current more efficiently, boosting the reliability of the entire string. The use of **bifacial cells** allows the module to capture additional light reflected from the ground, increasing energy yield without expanding the installation footprint - a real advantage wherever roof or ground space is limited. A **zero-LID** design combined with ultra-low LeTID degradation keeps power loss to a minimum in the early years of operation, while strong PID resistance reduces the risk of losses caused by electrical stress within the module. The Ultra T 1.0 series suits investors looking for a balance between performance, durability, and a lower **LCOE** across the full lifecycle of the installation.


## Notable figures

- Efficiency of 22.0% matches the \*\*TOPCon 400-450W\*\* median
- At 220.2 W/m² power density, roof space requirements are typical for \*\*TOPCon 400-450W\*\* panels
- At -0.30%/°C, hot weather performance is typical for \*\*TOPCon 400-450W\*\* panels
- Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
- In the top 45% for efficiency among all TOPCon panels


## Questions


### What makes the Suntech Ultra T 1.0 series different from standard PERC panels?

Ultra T 1.0 uses N-type TOPCon half-cut cells, which are more efficient and less prone to degradation than conventional PERC cells. This results in higher conversion efficiency, better performance at high temperatures and in low-light conditions, and a maximum power output of up to 600 Wp - meaning fewer panels are needed to reach the same system capacity.


### Are Suntech Ultra T 1.0 panels bifacial, and how much extra energy can they generate?

Yes, Ultra T 1.0 modules are bifacial in a double-glass construction, meaning the rear side also generates power from reflected light. Depending on the ground surface (light gravel, white EPDM roofing, etc.), this can add anywhere from a few to over ten percent more energy yield without increasing the installation footprint, making it especially cost-effective for ground-mount and flat-roof commercial projects.


### What warranty comes with the Suntech Ultra T 1.0 series?

The Ultra T 1.0 series is backed by a 15-year product warranty and a 30-year linear power warranty. This means the module is guaranteed to retain a significant share of its rated output even after three decades of operation, backed by Suntech's status as a tier 1 manufacturer headquartered in China with established service and replacement support.


### Does the multi busbar technology in the Ultra T 1.0 actually improve performance?

Yes, a denser busbar grid distributes current more evenly across the cell surface and reduces resistive losses, particularly in cases of micro-cracks or partial shading. In practice, this translates into higher and more consistent energy output over the module's lifetime, not just improved figures under standard STC test conditions.


### Are Suntech Ultra T 1.0 panels suitable for industrial and utility-scale solar farms?

Yes, the double-glass framed construction provides high structural rigidity and strong resistance to snow and wind loads, which matters on large industrial rooftops and ground-mount installations. The high per-module power output (up to 600 Wp) combined with bifacial technology also lowers the cost per watt, improving the economics of commercial and utility-scale projects.


### Do Ultra T 1.0 panels lose power in their first years of operation due to LID?

Not to a meaningful degree - the N-type TOPCon cells used in the Ultra T 1.0 series feature zero LID effect and very low LeTID degradation, resulting in minimal power loss in the first year. High PID resistance further limits losses from potential-induced degradation, allowing the panel to maintain stable performance over many years of service.


## Datasheet

[Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/STP420-450S-C54-NshtbBlack_Thru_Bifacial_EN_TSC-0e2570a66a86.pdf)


## Alternatives


| Panel | Power | How it differs |
| --- | --- | --- |
| [AIKO AIKO-A480-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a480-mah54mw) | 480 W | +50 W, cooler, +2.1 pp |
| [Gokin GK-5-54HG-480M](https://comparepv.com/panel/gokin-gk-5-54hg-480m) | 480 W | +50 W, cooler, +2.1 pp |
| [Jinko Solar JKM480N-48QL6-DB-F2-EU](https://comparepv.com/panel/jinko-solar-jkm480n-48ql6-db-f2-eu) | 480 W | +50 W, cooler, +2.0 pp |
| [Gamko New Energy GKA96N-PRO-480W](https://comparepv.com/panel/gamko-new-energy-gka96n-pro-480w) | 480 W | +50 W, +2.0 pp |
| [Suntech STP390S-C54/Umh](https://comparepv.com/panel/suntech-stp390s-c54-umh) | 390 W | Hotter, -2.1 pp, -5 yr warranty |
| [Suntech STP395S-C54/Umhm](https://comparepv.com/panel/wuxi-suntech-power-co-ltd-suntech-stp395s-c54-umhm) | 395 W | Hotter, -1.8 pp, -5 yr warranty |
| [Suntech STP395S-C54/Umh](https://comparepv.com/panel/suntech-stp395s-c54-umh) | 395 W | Hotter, -1.8 pp, -5 yr warranty |
| [Suntech STP400S-C54/Umhm](https://comparepv.com/panel/wuxi-suntech-power-co-ltd-suntech-stp400s-c54-umhm) | 400 W | Hotter, -1.5 pp, -5 yr warranty |
| [Suntech STP400S-C54/Umh](https://comparepv.com/panel/suntech-stp400s-c54-umh) | 400 W | Hotter, -1.5 pp, -5 yr warranty |
| [Suntech STP405S-C54/Umhm](https://comparepv.com/panel/wuxi-suntech-power-co-ltd-suntech-stp405s-c54-umhm) | 405 W | Hotter, -1.3 pp, -5 yr warranty |
| [Suntech STP405S-C54/Umh](https://comparepv.com/panel/suntech-stp405s-c54-umh) | 405 W | Hotter, -1.3 pp, -5 yr warranty |
| [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +80 W, cooler, +3.0 pp |
| [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +65 W, cooler, +2.8 pp |
| [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +75 W, cooler, +2.7 pp |
| [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | +75 W, cooler, +2.7 pp |
| [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +60 W, cooler, +2.5 pp |


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Source: https://comparepv.com/panel/wuxi-suntech-power-co-ltd-stp430s-c54-nshtb

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.