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Hanersun HN21-40H390W
Hanersun Brand review

HN21-40H390W

390 Wp PERC
ComparePV verdict

Strong in heat, no clear weak spot

Rank 12,304 of 14,005
Compare panels Datasheet PDF
Power (Wp)
390
Typical for its class
Efficiency (%)
20.30
Strong · top 16%
Density (Wp/m²)
202.9
Strong · top 17%
Temp (%/°C)
-0.340
Strong · top 15%
Weight (kg)
21.0
Typical · median 21.4 kg
Warranty (yrs)
25
Typical · median 25 yrs

The Hanersun Hitouch 6 (HN21-40H) series are modules designed for high efficiency on limited roof space - without compromising on durability. This line uses monocrystalline PERC cells, which perform well in real-world conditions, not just in a laboratory. The half-cut design combined with multiple SMBB busbars is also noteworthy - this approach improves current flow within the module and increases resistance to losses when the installation is partially shaded.

In practice, the HN21-40H helps investors address common issues: maximizing energy output from a given roof area, maintaining stable performance under variable sunlight, and minimizing the risk of reduced returns over the long term. A key advantage is the high-density lamination with very small gaps between cells, which translates to better utilization of the module's active surface area.

This is a good choice for homes, small businesses, and projects where aesthetics, predictable production, and reasonable overall installation costs are important.

Ranking

579 panels in the segment PERC 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.30% 19.90% Strong · top 16% 11,769
Power density 202.9 199.0 Strong · top 17% 11,787
Temperature coefficient -0.340 -0.350 Strong · top 15% 8,778
Weight per kWp 53.8 55.8 Typical 7,897
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

7 positive · 3 caution
Best for

Residential, commercial and shaded-installations.

Strengths
-0.340 %/°C temperature coefficient

Top 15% of the PERC 350-400 W segment, against a median of -0.350.

20.30% module efficiency

Top 16% of the PERC 350-400 W segment, against a median of 19.90%.

202.9 watts per square metre

Top 17% of the PERC 350-400 W segment, against a median of 199.0.

What owners get
Peak efficiency of 21.07% above peer comparables

The top variant in the series (405 Wp) achieves a module efficiency of 21.07% — higher than all three comparable series: Goldi Solar GS10-M108-BF (20.66%), EGing PV STAR SERIES (20.74%), and VSUN405-108BMH-DG (20.74%). This translates into a tangible advantage on roof space-constrained installations.

Half-cut cells + SMBB with 0.5 mm dense layout

The half-cut cell architecture combined with super multi-busbar (SMBB) interconnection and high-density lamination (~0.5 mm inter-cell spacing) reduces internal resistance and minimizes power losses under partial shading. Hanersun claims an approximately 2% module power gain compared to conventional 5-busbar designs.

25-year linear power output warranty

The 25-year linear power warranty aligns with the segment standard at the time of launch (2021) and gives system owners predictable energy yield across the full intended investment payback horizon.

Proven PERC technology — low maintenance risk

Monocrystalline PERC cells represent a mature, well-documented technology with an extensive field degradation dataset. This simplifies risk assessment and facilitates O&M activities throughout the warranty period.

Trade-offs
Series discontinued (EOL 2023)

Production ended in 2023. This limits the availability of replacement modules for system expansions and repairs, precludes certification updates, and may create power-matching challenges in future capacity additions.

No BNEF Tier 1 status for this product line

For nearly the entire commercial lifecycle of the series (2021–2023), Hanersun did not appear on the BNEF Tier 1 list. Tier 1 status was achieved only in Q2 2023, and exclusively for the 600 W+ line (HItouch 6N/TOPCon) — not for the HN21-40H. This may complicate project acceptance under financing structures or lease agreements that require manufacturer bankability.

P-type PERC technology — previous generation

PERC cells exhibit higher light-induced degradation (LID/LeTID) rates than N-type TOPCon, which has dominated the market offering in this power class since 2024. For systems commissioned today, the HN21-40H represents technology one generation behind current alternatives.

Notes from the database
  • Efficiency of 20.3% is 0.9pp above the PERC 0-400W median (19.4%)
  • At 202.9 W/m² power density, this panel generates 8.5 W/m² more per unit area than PERC 0-400W median (194.4 W/m²)
  • Temperature coefficient of -0.34%/°C matches the PERC 0-400W median
  • In the top 84% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 390 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.30 % Strong Segment median 19.90%
Vmpp · Impp 22.70 V · 17.33 A Operating point at max power
Voc · Isc 27.10 V · 18.41 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1754×1096×30 mm · 1.92 m² of roof
Weight 21.0 kg Typical Typical · median 21.4 kg
Cells 80 · PERC Monocrystalline
Coefficient Pmax -0.340 %/°C Strong top 15% of its segment
Coefficient Voc · Isc -0.250 · 0.040 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 84.8 % Equals 320 W guaranteed
Degradation 2.00 → 0.55 % First year, then annual

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
-0.340 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Hanersun HN21-40H390W 390 W 20.30% -0.340 21.0 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg +50 W, cooler, +2.8 pp
GKA210M340W 340 W 23.00% - 16.2 kg -50 W, +2.7 pp, +5 yr warranty
GKA210M360W 360 W 23.00% - 16.2 kg Lighter, +2.7 pp, +5 yr warranty
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg Lighter, +2.7 pp, +5 yr warranty
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg Lighter, +2.7 pp, +5 yr warranty
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg Lighter, +2.7 pp, +5 yr warranty
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg Lighter, +2.7 pp, +5 yr warranty
JT440SYK(B) 440 W 22.90% -0.240 23.0 kg +50 W, cooler, +2.6 pp
HN21-40H385W 385 W 20.02% -0.340 21.0 kg -0.3 pp
HN21-40H395W 395 W 20.50% -0.340 21.0 kg Very close match
HN21-40H400W 400 W 20.80% -0.340 21.0 kg +10 W, +0.5 pp
HN21-40H405W 405 W 21.07% -0.340 21.0 kg +15 W, +0.8 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +120 W, cooler, +4.7 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +105 W, cooler, +4.5 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +115 W, cooler, +4.4 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +100 W, cooler, +4.2 pp

Found 53 panels of the same or similar size to this one, within ±10 mm. See them here Found 67 panels of the same or similar size to this one, within ±25 mm. See them here Found 3671 panels of the same or similar size to this one, within ±50 mm. See them here Found 4169 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the Hanersun Hitouch 6 (HN21-40H) series still available for purchase?
The Hanersun Hitouch 6 (HN21-40H) series has been discontinued and is no longer part of the standard distributor lineup. Remaining stock units may still be found at some retailers. If you need a current alternative, ask your supplier about newer Hanersun PERC modules or a comparable series from another manufacturer that meets the same performance requirements.
What warranty does the Hanersun Hitouch 6 HN21-40H carry?
Hanersun provided a 12-year product warranty and a 25-year linear power output warranty for the HN21-40H modules. The 25-year power guarantee ensures predictable energy yield over the full operational lifetime of the system. Since the series is discontinued, buyers should confirm warranty claim procedures directly with their distributor before purchasing remaining stock.
What is half-cut cell and SMBB technology in the Hitouch 6, and why does it matter?
Half-cut cells are laser-split into two halves, reducing internal resistance and resistive losses. SMBB (Super Multi Busbar) replaces a few wide busbars with many thin ones, shortening the current path across each cell. Together, these technologies in the HN21-40H improve module efficiency under partial shading, lower operating temperatures, and reduce the risk of micro-cracks during shipping and installation.
How much power do Hanersun Hitouch 6 panels produce, and is that enough for a typical home?
The HN21-40H modules are rated at 405 Wp peak power under STC conditions. A typical single-family home consuming around 4,000–5,000 kWh per year generally needs 8–12 modules, resulting in a 3.2–4.9 kWp system. The exact number depends on roof orientation, local irradiance, and the household's actual energy consumption profile.
Do Hitouch 6 HN21-40H panels handle partial shading well, for example from a chimney?
Yes. The half-cut design electrically splits each module into two independent halves. If a chimney or antenna shades the upper portion, only that half is affected — the lower half continues producing at full capacity. Combined with the SMBB layout, which reduces the per-cell shadow impact across the string, the HN21-40H performs well on rooftops with typical obstructions.
Are Hanersun Hitouch 6 modules bifacial — do they generate power from both sides?
No, the HN21-40H is a monofacial module. Energy is harvested exclusively from the front active surface. Bifacial technology, which captures additional energy from light reflected off the ground or rooftop surface, is available in other, more recent module series. For standard pitched-roof installations, the absence of bifacial capability is not a limitation, since reflected irradiance rarely reaches the rear of a roof-mounted panel.
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