---
title: "Hyundai HiS-T640NJ vs Hyundai HIE-S410VG - Solar Panel Comparison | ComparePV"
description: "Compare Hyundai HiS-T640NJ vs Hyundai HIE-S410VG side by side: what actually differs, output when it is hot, thirty-year production, and the full specification."
source: "https://comparepv.com/compare/hd-hyundai-energy-solutions-his-t640nj/hyundai-hie-s410vg"
image: "https://comparepv.com/og/compare/panels/hd-hyundai-energy-solutions-his-t640nj/hyundai-hie-s410vg.png"
updated: 2026-09-11
---

# Hyundai HiS-T640NJ vs Hyundai HIE-S410VG

HiS-T640NJ leads on the differences that matter

The largest is module efficiency: 2.00 pp more efficient. 2 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.


## The two panels


| Attribute | A | B |
| --- | --- | --- |
| Panel | [Hyundai HiS-T640NJ](https://comparepv.com/panel/hd-hyundai-energy-solutions-his-t640nj) | [Hyundai HIE-S410VG](https://comparepv.com/panel/hyundai-hie-s410vg) |
| Manufacturer | Hyundai | Hyundai |
| Power | 640 Wp | 410 Wp |
| Efficiency | 22.90 % | 20.90 % |
| Technology | TOPCon | PERC |


## Where they differ

Ranked by how much the difference matters, not by datasheet order.


| Parameter | HiS-T640NJ | HIE-S410VG | Difference |
| --- | --- | --- | --- |
| Module efficiency | 22.90 % | 20.90 % | +2.00 pp for HiS-T640NJ |
| Temperature coefficient | -0.290 %/°C | -0.340 %/°C | +0.050 %/°C for HiS-T640NJ |
| Rated power | 640 Wp | 410 Wp | +230 W for HiS-T640NJ |
| Power density | 229.0 Wp/m² | 209.2 Wp/m² | +19.7 Wp/m² for HiS-T640NJ |
| Performance warranty | 30 yrs | 25 yrs | +5 yrs for HiS-T640NJ |
| Annual degradation | 0.40 %/yr | 0.55 %/yr | -0.15 %/yr for HiS-T640NJ |
| Weight | 34.7 kg | 22.0 kg | -12.7 kg for HIE-S410VG |
| Product warranty | 12 yrs | 25 yrs | +13 yrs for HIE-S410VG |
| Open-circuit voltage | 57.77 V | 46.60 V | 11.17 V apart |
| Short-circuit current | 14.06 A | 11.07 A | 2.99 A apart |
| Module area | 2.795 m² | 1.960 m² | 0.836 m² apart |
| Cell technology | TOPCon | PERC | TOPCon vs PERC |
| Voltage at max power | 47.74 V | 38.80 V | 8.94 V apart |
| Current at max power | 13.41 A | 10.57 A | 2.84 A apart |
| Bifacial | Yes | No | Yes vs No |
| Dimensions | 2465x1134x30 mm | 1719x1140x35 mm | 2465x1134x30 mm vs 1719x1140x35 mm |


## Every compared parameter


| Parameter | HiS-T640NJ | HIE-S410VG |
| --- | --- | --- |
| Rated power | 640 Wp | 410 Wp |
| Module efficiency | 22.90 % | 20.90 % |
| Power density | 229.0 Wp/m² | 209.2 Wp/m² |
| Open-circuit voltage | 57.77 V | 46.60 V |
| Voltage at max power | 47.74 V | 38.80 V |
| Short-circuit current | 14.06 A | 11.07 A |
| Current at max power | 13.41 A | 10.57 A |
| Temperature coefficient | -0.290 %/°C | -0.340 %/°C |
| Dimensions | 2465x1134x30 mm | 1719x1140x35 mm |
| Module area | 2.795 m² | 1.960 m² |
| Weight | 34.7 kg | 22.0 kg |
| Weight per kWp | 54.2 kg/kWp | 53.7 kg/kWp |
| Product warranty | 12 yrs | 25 yrs |
| Performance warranty | 30 yrs | 25 yrs |
| Annual degradation | 0.40 %/yr | 0.55 %/yr |
| Cell technology | TOPCon | PERC |
| Cell type | Monocrystalline | Monocrystalline |
| Cell count | 156 | - |
| Bifacial | Yes | No |


## Thirty-year yield

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

- **Cumulative output, HiS-T640NJ:** 21,473 kWh
- **Cumulative output, HIE-S410VG:** 13,288 kWh
- **Gap:** 8,185 kWh


## Output when hot


| Condition | Cell temperature | HiS-T640NJ | HIE-S410VG | Retained |
| --- | --- | --- | --- | --- |
| Standard test conditions | 25 °C | 640 W | 410 W | 100.0% of rated power |
| Cool, bright day | 40 °C | 612 W | 389 W | 94.9% of rated power |
| Typical summer roof | 55 °C | 584 W | 368 W | 89.8% of rated power |
| Hot roof | 70 °C | 556 W | 347 W | 84.7% of rated power |


## Against the whole database


| Measure | HiS-T640NJ | HIE-S410VG | Out of | Note |
| --- | --- | --- | --- | --- |
| Efficiency | #2,412 | #10,148 | 14,129 | HiS-T640NJ leads by 7,736 places |
| Power density | #2,443 | #10,153 | 14,129 | HiS-T640NJ leads by 7,710 places |
| Heat behaviour | #2,220 | #8,846 | 14,129 | HiS-T640NJ leads by 6,626 places |
| Weight | #8,527 | #7,736 | 14,129 | HIE-S410VG leads by 791 places |
| Warranty | #21 | #9,912 | 14,129 | HiS-T640NJ leads by 9,891 places |
| Overall | #2,117 | #10,307 | 14,129 | HiS-T640NJ leads by 8,190 places |


## Questions


### Which panel is better: Hyundai HiS-T640NJ or Hyundai HIE-S410VG?

According to our database: **Hyundai HiS-T640NJ** has higher module efficiency (**22.90%** vs **20.90%**); **Hyundai HiS-T640NJ** tolerates heat better (temp coeff **-0.290%/°C** vs **-0.340%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture.


### What is the efficiency of Hyundai HiS-T640NJ and Hyundai HIE-S410VG?

**Hyundai HiS-T640NJ** has a module efficiency of **22.90%**, while **Hyundai HIE-S410VG** is **20.90%**. Higher efficiency means more electricity from the same roof area - useful when space is limited.


### What cell technology does Hyundai HiS-T640NJ use vs Hyundai HIE-S410VG?

**Hyundai HiS-T640NJ** uses **TOPCon** cells; **Hyundai HIE-S410VG** uses **PERC**. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells.


### What is the warranty on Hyundai HiS-T640NJ and Hyundai HIE-S410VG?

**Hyundai HiS-T640NJ** has a **30 years** power warranty; **Hyundai HIE-S410VG** has a **25 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter.


### Are Hyundai HiS-T640NJ and Hyundai HIE-S410VG bifacial panels?

**Hyundai HiS-T640NJ** is bifacial (captures light from both faces); **Hyundai HIE-S410VG** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.


## Related comparisons

- [Hyundai HiS-T640NJ vs Hyundai HiS-T635NJ](https://comparepv.com/compare/hd-hyundai-energy-solutions-his-t640nj/hd-hyundai-energy-solutions-his-t635nj) - The same specification on paper
- [Hyundai HiS-T640NJ vs Hyundai HiS-T630NJ](https://comparepv.com/compare/hd-hyundai-energy-solutions-his-t640nj/hd-hyundai-energy-solutions-his-t630nj) - 3 differences, the largest is module efficiency
- [Hyundai HIE-S410VG vs Hyundai HIE-S405VG](https://comparepv.com/compare/hyundai-hie-s410vg/hyundai-hie-s405vg) - One difference: module efficiency
- [Hyundai HIE-S410VG vs Hyundai HIE-S400VG](https://comparepv.com/compare/hyundai-hie-s410vg/hyundai-hie-s400vg) - 3 differences, the largest is module efficiency
- [Hyundai HIE-S410VG vs Hyundai HIE-S395VG](https://comparepv.com/compare/hyundai-hie-s410vg/hyundai-hie-s395vg) - 4 differences, the largest is module efficiency
- [Hyundai HIE-S410VG vs Hyundai HIE-S390VG](https://comparepv.com/compare/hyundai-hie-s410vg/hyundai-hie-s390vg) - 4 differences, the largest is module efficiency


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Source: https://comparepv.com/compare/hd-hyundai-energy-solutions-his-t640nj/hyundai-hie-s410vg

Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.