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Hounen Solar HNM7-SHDB108-415/M
Hounen Solar Brand review

HNM7-SHDB108-415/M

415 Wp Monocrystalline
ComparePV verdict

Light for its output, short guarantee

Rank 11,417 of 14,005
Compare panels Datasheet PDF
Power (Wp)
415
Typical for its class
Efficiency (%)
21.25
Typical · median 21.48%
Density (Wp/m²)
212.5
Typical · median 214.7
Temp (%/°C)
-0.350
Weak · bottom 22%
Weight (kg)
20.5
Strong · 2.5 kg below median
Warranty (yrs)
25
Weak · bottom 18%

The Hounen Solar HNM7-SHDB 108 series is a compact photovoltaic panel based on the PERC bifacial technology, which stands out with its ability to absorb solar radiation from both the front and back sides - resulting in a significantly higher energy yield throughout the day. The use of half-cut cells in a 108-cell configuration effectively reduces resistive losses and significantly improves tolerance to partial shading - the panel does not experience a sudden drop in performance when part of its surface is obscured by trees or chimneys. Due to the smaller number of cells compared to 144- or 156-cell models, the 108-cell series offers compact dimensions ideal for smaller roof areas and residential prosumer installations. The PERC technology with an additional reflective layer on the back of the cell increases light absorption and stabilizes performance under high temperatures. The bifacial design is particularly well-suited for ground-mounted and roof-mounted installations with light-colored surfaces, where reflected light further powers the back surface of the panel. The manufacturer offers a 12-year product warranty and 25-year power warranty, making this series a reliable and long-term choice for both private and commercial investors.

Ranking

6,879 panels in the 315-515 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 21.25% 21.48% Typical 8,904
Power density 212.5 214.7 Typical 8,791
Temperature coefficient -0.350 -0.300 Weak · bottom 22% 10,419
Weight per kWp 49.4 53.1 Strong · top 23% 2,890
Performance warranty 25 yrs 30 yrs Weak · bottom 18% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 5 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Owners who want a long output guarantee and hot climates.

Strengths
49.4 kg per kWp

Top 23% of the 315-515 W band, against a median of 53.1.

Watch-outs
25 year performance warranty

Bottom 18% of the 315-515 W band, against a median of 30 yrs.

-0.350 %/°C temperature coefficient

Bottom 22% of the 315-515 W band, against a median of -0.300.

What owners get
Half-Cut 108-Cell Architecture

The 108 half-cut cell layout reduces resistive losses by up to 75% compared to full-cell modules and significantly improves shade tolerance. In practice, this delivers more stable energy output in residential prosumer installations where chimneys, antennas, or dormers partially shade the array.

Up to 21.51% Efficiency — Top of Segment

The highest-power variant reaches 21.51% module efficiency — equal to Solarspace SS8-54HSB (21.51%) and virtually level with GCL-M10/54H (21.50%). Phono Solar TWINPLUS tops out at 20.98%, placing this series among the most efficient compact 108-cell modules available in its class.

Compact 108-Cell Form Factor

Fewer cells (108 vs. 144–156 in full-size modules) result in ~1,724×1,134 mm dimensions and lower weight, simplifying installation on small residential rooftops without requiring rafter modifications or a redesigned racking system.

25-Year Linear Power Warranty

Hounen Solar guarantees at least 84.8% of rated power output after 25 years — consistent with the Tier-1 market standard (JA Solar, Trina Solar) — backed by a 12-year product warranty, providing full lifecycle protection for residential and commercial investors alike.

Trade-offs
Discontinued Product Series

The HNM7-SHDB 108 series is listed as discontinued: replacement modules may be unavailable, manufacturer technical support is limited, and expanding an existing installation with identical panels will be difficult. This presents meaningful operational risk for projects that may require individual panel replacement over a 10–15 year horizon.

Not Listed on BNEF Tier 1

Hounen Solar does not appear on the BNEF Tier 1 list (Q1 2026), which may restrict access to bank financing for projects exceeding 10 MW and reduce perceived bankability among institutional investors. Direct peer comparables GCL and Phono Solar both hold Tier-1 status.

PERC Technology — Legacy Cell Generation

As of 2025, N-type TOPCon accounts for approximately 75% of new Chinese PV manufacturing capacity, offering a lower degradation rate (~0.4%/yr vs. ~0.7%/yr for PERC) and better high-temperature performance. Newer 108-cell TOPCon modules already deliver 430–450 W at comparable dimensions, making PERC a technologically trailing standard in the current market.

Notes from the database
  • At 21.2% efficiency, this panel is 0.6pp below the database median of 21.8%
  • Power density of 212.5 W/m² is 5.6 W/m² below database median (218.1 W/m²) - needs more roof space
  • At -0.35%/°C, loses 0.05pp more power per degree than database median (-0.30%/°C)
  • 20.5 kg weight - 6.0 kg lighter than database median (26.5 kg), reducing installation effort
  • In the top 64% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 415 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.25 % Typical Segment median 21.48%
Vmpp · Impp 31.50 V · 13.18 A Operating point at max power
Voc · Isc 37.70 V · 13.91 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×30 mm · 1.95 m² of roof
Weight 20.5 kg Strong Strong · 2.5 kg below median
Cells 108 Monocrystalline
Coefficient Pmax -0.350 %/°C Weak bottom 22% of its segment
Coefficient Voc · Isc -0.290 · 0.050 %/°C
NOCT 44 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Weak bottom 18% · median 30 yrs
End-of-warranty output 84.8 % Equals 341 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
-0.350 %/°C against a segment median of -0.300
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Hounen Solar HNM7-SHDB108-415/M 415 W 21.25% -0.350 20.5 kg You are here
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +50 W, +2.6 pp, +5 yr warranty
LX-465M/182R-96+ GG 465 W 23.80% -0.260 23.5 kg +50 W, cooler, +2.6 pp
AIKO-A460-MAH54Mb 460 W 23.60% -0.290 20.5 kg Cooler, +2.4 pp, +5 yr warranty
LX-465M/182R188-108+ GG 465 W 23.60% -0.290 24.5 kg +50 W, cooler, +2.4 pp
JST-EDMH-(445-465)W-TD (460W class) 460 W 23.56% -0.300 20.5 kg Cooler, +2.3 pp, +5 yr warranty
LX-460M/182R-96+ GG 460 W 23.55% -0.260 23.5 kg Cooler, +2.3 pp, +5 yr warranty
PS-MNB108(HCBF)-460W 460 W 23.53% -0.290 20.5 kg Cooler, +2.3 pp, +5 yr warranty
JAT54S40-460/LR 460 W 23.50% -0.260 19.3 kg Cooler, +2.2 pp, +5 yr warranty
HNM7-SHDB108-395/M 395 W 20.23% -0.350 20.5 kg -20 W, -1.0 pp
HNM7-SHDB108-400/M 400 W 20.48% -0.350 20.5 kg -15 W, -0.8 pp
HNM7-SHDB108-405/M 405 W 20.74% -0.350 20.5 kg -10 W, -0.5 pp
HNM7-SHDB108-410/M 410 W 21.00% -0.350 20.5 kg -0.2 pp
HNM7-UHLDD108-420/M 420 W 21.51% -0.300 24.5 kg Cooler, heavier, +5 yr warranty
HNM7-UHLDD108-425/M 425 W 21.76% -0.300 24.5 kg Cooler, heavier, +5 yr warranty
HNM7-UHLDD108-430/M 430 W 22.02% -0.300 24.5 kg Cooler, heavier, +5 yr warranty
HNM7-UHLDD108-435/M 435 W 22.28% -0.300 24.5 kg Cooler, +1.0 pp, +5 yr warranty
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +95 W, cooler, +3.8 pp

Found 1783 panels of the same or similar size to this one, within ±10 mm. See them here Found 1914 panels of the same or similar size to this one, within ±25 mm. See them here Found 3392 panels of the same or similar size to this one, within ±50 mm. See them here Found 3970 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What does the 108 half-cut cell layout in the Hounen Solar HNM7-SHDB 108 Series mean for performance?
The HNM7-SHDB 108 uses 108 half-cut PERC cells — each cell is split in half compared to a standard cell. This reduces resistive losses and limits power drop caused by partial shading from chimneys or antennas. In practice, the panel maintains higher output throughout the day, especially on rooftops where obstructions regularly cast shadows on part of the array.
Are Hounen Solar HNM7-SHDB 108 panels a good fit for a small pitched residential roof?
Yes. The HNM7-SHDB 108 measures 1724×1134 mm and delivers up to 420 Wp, making it well-suited for smaller residential rooftops. The 108-cell format is more compact than 144- or 156-cell modules, which simplifies handling and installation on standard pitched roofs without requiring custom racking solutions.
What warranties does Hounen Solar offer on the HNM7-SHDB 108 Series?
Hounen Solar backs the HNM7-SHDB 108 with a 12-year product warranty covering material and manufacturing defects, plus a 25-year linear power warranty. After 25 years, the module is guaranteed to retain at least 84.8% of its rated output. Annual degradation after year one is capped at 0.55%, ensuring consistent energy production over the system's lifetime.
How do HNM7-SHDB 108 panels perform during hot summer days?
The HNM7-SHDB 108 has a temperature coefficient of -0.35%/°C, which is a relatively low power loss rate as cell temperature rises above the standard 25°C STC test condition. The PERC technology, which includes a rear-surface passivation layer, helps stabilize efficiency under high-temperature conditions typical of summer heat.
Is the Hounen Solar HNM7-SHDB 108 a bifacial panel?
No, the HNM7-SHDB 108 is a monofacial panel — it generates power only from the front surface. While other models in the HNM7 family are available as bifacial modules, this 108-cell variant is single-sided. Installation is straightforward and does not require a reflective ground surface or elevated racking to capture rear-side irradiance.
What is the efficiency and available power range of the Hounen Solar HNM7-SHDB 108?
The HNM7-SHDB 108 Series reaches up to 420 Wp with module efficiency between 20.2% and 21.5%. The compact 1724×1134 mm footprint makes efficient use of available roof space. Multiple power variants are available within the series starting at approximately 395 Wp, allowing system designers to match capacity to roof area and household energy demand.
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