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PolyCrown Solar Tech Brand review

NS-660MH-120

660 Wp N-type
ComparePV verdict

Light for its output, short guarantee

Rank 1,595 of 14,005
Compare panels Datasheet PDF
Power (Wp)
660
Typical for its class
Efficiency (%)
23.32
Typical · median 23.30%
Density (Wp/m²)
233.2
Typical · median 233.2
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
31.0
Strong · 2.5 kg below median
Warranty (yrs)
25
Weak · bottom 7%

The PolyCrown Solar Tech Monocrystalline 120 series panels introduce a new quality to rooftop installations through the use of advanced half-cut cell technology. This specific 120-cell format allows for a significant reduction in energy losses resulting from internal resistance and shading effects. Unlike standard modules, this series performs excellently in challenging lighting conditions, which directly translates into higher annual yields. The use of multi-busbar technology minimizes the risk of micro-cracks and improves current flow, making the panels exceptionally resistant to aging processes. They solve the problem of limited installation space by offering maximum power density from every square meter of roof surface. It is an optimal solution for homeowners and businesses seeking a balance between aesthetics and high operating efficiency. What sets them apart from the competition is their exceptional thermal stability, which allows the modules to maintain high efficiency even during intense summer heat. The use of pure monocrystalline silicon guarantees investment security, effectively eliminating concerns about rapid power degradation over time. This is a solid choice for investors who prioritize durability and a quick return from a modern photovoltaic system.

Ranking

109 panels in the segment N-type 650-700 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.32% 23.30% Typical 973
Power density 233.2 233.2 Typical 1,089
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 47.0 50.9 Strong · top 10% 1,440
Performance warranty 25 yrs 30 yrs Weak · bottom 7% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 4 caution
Best for

Commercial, utility-scale and shaded-installations.

Not ideal for

Owners who want a long output guarantee.

Strengths
47.0 kg per kWp

Top 10% of the N-type 650-700 W segment, against a median of 50.9.

Watch-outs
25 year performance warranty

Bottom 7% of the N-type 650-700 W segment, against a median of 30 yrs. Ranked 9,798th in the whole database.

What owners get
N-type half-cut cell technology

The use of N-type half-cut cells in a 120-cell format reduces resistive losses and improves partial-shading performance compared to older P-type/PERC designs, translating into higher annual energy yield under uneven roof irradiance.

Multi-busbar technology for durability

The multi-busbar metallization grid (aligned with the 9BB approach used across this product line) lowers the risk of microcracks and improves current flow, supporting the stated 25-year linear power warranty.

Wide power range of 450-660 Wp

The 660 Wp upper limit puts the series on par with leading large-format competitors such as AE Solar AURORA ME-132 and Talesun BIPRO TM7G78M (both also up to 660 Wp), enabling maximum power density design on limited roof space.

Standard 15/25-year warranty package

The 15-year product warranty and 25-year linear power warranty match current market standards for N-type modules, giving investors a predictable power degradation profile over time.

Trade-offs
Production discontinued - limited servicing

The Monocrystalline120 series has been discontinued (series_info.discontinued = true), meaning limited availability of spare parts, service support, and reduced enforceability of the long-term warranty going forward.

Efficiency below segment leaders in N-type

Peak efficiency of 23.32% trails direct N-type/TOPCon competitors in the same power class - HY Solar (23.8%) and Talesun BIPRO TM7G78M (23.7%) - meaning slightly lower energy yield for the same roof area.

Manufacturer without confirmed Tier-1 status

PolyCrown Solar Tech (China, founded 2014) does not appear on publicly available BNEF Tier 1 reports, unlike more established brands in the peer comparable set, raising bankability concerns and long-term warranty reliability, particularly combined with the series' discontinuation.

Notes from the database
  • Efficiency of 23.3% matches the N-type 650-700W median
  • At 233.2 W/m² power density, roof space requirements are typical for N-type 650-700W panels
  • At -0.29%/°C, hot weather performance is typical for N-type 650-700W panels
  • Weight of 31.0 kg (2.5 kg below N-type 650-700W median of 33.5 kg) allows easier transport and roof mounting
  • In the top 7% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 660 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.32 % Typical Segment median 23.30%
Vmpp · Impp 38.26 V · 17.26 A Operating point at max power
Voc · Isc 45.51 V · 18.13 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2172×1303×30 mm · 2.83 m² of roof
Weight 31.0 kg Strong Strong · 2.5 kg below median
Cells 120 · N-type Monocrystalline
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 25 years Weak bottom 7% · median 30 yrs
End-of-warranty output 89.0 % Equals 574 W guaranteed
Degradation 1.00 → 0.42 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by PolyCrown Solar Tech in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 660 Wp appear here. The rest cover the whole series.

Current-Voltage Curve Current-Voltage Curve Whole series Power-Voltage Curve Power-Voltage Curve Whole series Voltage-Current Curve at Different Temperatures Voltage-Current Curve at Different Temperatures 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
-

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
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
PolyCrown Solar Tech NS-660MH-120 660 W 23.32% -0.290 31.0 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Lighter, +1.9 pp, +5 yr warranty
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, +1.9 pp, +5 yr warranty
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, +1.7 pp, +5 yr warranty
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg Lighter, +1.7 pp, +5 yr warranty
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +40 W, +1.7 pp, +5 yr warranty
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +35 W, +1.6 pp, +5 yr warranty
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, +1.5 pp, +5 yr warranty
NS-620MH-120 620 W 21.90% -0.290 31.0 kg -40 W, -1.4 pp
NS-630MH-120 630 W 22.26% -0.290 31.0 kg -30 W, -1.1 pp
NS-640MH-120 640 W 22.61% -0.290 31.0 kg -20 W, -0.7 pp
NS-650MH-120 650 W 22.96% -0.290 31.0 kg -10 W, -0.4 pp
GKA210N120 680 W 24.03% -0.340 28.0 kg Hotter, +0.7 pp, +5 yr warranty
GKA210N120-675 675 W 23.85% -0.340 28.0 kg Hotter, lighter, +5 yr warranty
QN-670HJT-01 670 W 23.70% -0.240 35.5 kg Cooler, heavier, +5 yr warranty
GKA210N120-670 670 W 23.67% -0.340 28.0 kg Hotter, lighter, +5 yr warranty
QN-665HJT-01 665 W 23.50% -0.240 35.5 kg Cooler, heavier, +5 yr warranty

Found 497 panels of the same or similar size to this one, within ±10 mm. See them here Found 502 panels of the same or similar size to this one, within ±25 mm. See them here Found 502 panels of the same or similar size to this one, within ±50 mm. See them here Found 506 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the PolyCrown Solar Tech Monocrystalline120 series still available for purchase?
The Monocrystalline120 series by PolyCrown Solar Tech has been discontinued and is no longer offered through regular sales channels. Limited stock may still be available at select distributors — verify availability directly before committing to a purchase. For new installations, we recommend considering current series from the same manufacturer to ensure full warranty coverage and ongoing after-sales support.
What warranties does the manufacturer provide for the PolyCrown Solar Tech Monocrystalline120 panels?
The manufacturer offers a 15-year product warranty covering material and workmanship defects, along with a separate 25-year power output warranty guaranteeing the module retains a specified percentage of its rated capacity over that period. Because this series is discontinued, warranty claim fulfillment should be confirmed in writing by your local distributor or importer prior to finalizing any purchase agreement.
What are N-type cells and why does the Monocrystalline120 series use them?
N-type silicon cells exhibit lower light-induced degradation (LID) and higher initial efficiency compared to standard P-type and PERC cells. In the Monocrystalline120 series, this results in more stable power output throughout the 25-year operational lifetime and better performance under elevated temperatures. Choosing N-type technology reduces the risk of accelerated power degradation — a critical factor when calculating the expected return on investment.
How do half-cut cells and multi-busbar technology affect the Monocrystalline120's output under partial shading?
The 120-cell half-cut format splits the module into two independent half-panels, limiting energy losses when part of the panel is shaded — for example by a chimney, antenna, or dormer window. The multi-busbar design shortens current paths and reduces the risk of microcracks developing in the cells. Both technologies work synergistically, delivering higher annual energy yields on rooftops with less-than-ideal solar exposure.
What is the maximum power output of the Monocrystalline120 panels and what system sizes are they suited for?
The Monocrystalline120 series reaches a maximum power of 660 Wp, positioning it as a high power density module suited for both residential prosumer systems and smaller commercial rooftop installations with limited available roof space. The high per-panel wattage means fewer modules are required to reach a given system capacity, which can reduce overall mounting structure and labor costs.
Do the PolyCrown Solar Tech Monocrystalline120 panels maintain high efficiency during hot summer days?
Yes, the Monocrystalline120 series is noted for its above-average thermal stability, a direct benefit of N-type cell technology. On hot summer days, conventional P-type PERC modules typically lose a significant share of their output due to rising cell temperatures, while the low temperature coefficient of power in this series limits those losses. In practice, this translates to higher energy yields compared to similarly rated P-type modules under peak heat conditions.
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