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Solarspace Brand review

SS8-54HSB-420M

420 Wp PERC
ComparePV verdict

Efficiency leader, no clear weak spot

Rank 11,132 of 14,005
Compare panels Datasheet PDF
Power (Wp)
420
Typical for its class
Efficiency (%)
21.51
Strong · top 3%
Density (Wp/m²)
215.1
Strong · top 3%
Temp (%/°C)
-0.335
Strong · top 14%
Weight (kg)
21.0
Strong · 1.0 kg below median
Warranty (yrs)
25
Typical · median 25 yrs

The Solarspace SS8-54HSB 410-420M (Lumina I) series are all-black modules, designed for roofs where both power generation and the aesthetic consistency of the facade are important. The use of PERC monocrystalline cells in a half-cut configuration helps to minimize current losses and reduces the risk of overheating in shaded areas, which in practice translates to more stable operation of the installation under real-world conditions.

Compared to many standard panels, these stand out due to their refined design with MBB (multi busbar), which improves current collection and supports better performance at higher module temperatures. The manufacturer also focuses on solutions that reduce microcracks and gallium doping, which is important for slower degradation over the long term.

This is a good choice for premium home installations and small to medium-sized commercial roofs - especially where you expect high-quality workmanship, resistance to harsh environments, and a sleek, uniform black appearance without compromise.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.51% 20.60% Strong · top 3% 7,894
Power density 215.1 206.2 Strong · top 3% 7,882
Temperature coefficient -0.335 -0.350 Strong · top 14% 8,753
Weight per kWp 50.0 53.0 Strong · top 17% 3,317
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 0 caution
Best for

Residential, commercial, shaded-installations and BIPV.

Strengths
21.51% module efficiency

Top 3% of the PERC 400-450 W segment, against a median of 20.60%. Ranked 7,894th in the whole database.

215.1 watts per square metre

Top 3% of the PERC 400-450 W segment, against a median of 206.2. Ranked 7,882nd in the whole database.

-0.335 %/°C temperature coefficient

Top 14% of the PERC 400-450 W segment, against a median of -0.350.

Notes from the database
  • 21.5% module efficiency - 0.9pp better than the PERC 400-450W median of 20.6%
  • 215.1 W/m² power density - 8.9 W/m² more than PERC 400-450W median (206.2 W/m²), more power per roof area
  • Temperature coefficient of -0.34%/°C matches the PERC 400-450W median
  • Weight of 21.0 kg is typical for PERC 400-450W panels
  • In the top 56% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 420 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.51 % Strong Segment median 20.60%
Vmpp · Impp 31.80 V · 13.21 A Operating point at max power
Voc · Isc 37.58 V · 14.10 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 21.0 kg Strong Strong · 1.0 kg below median
Cells 108 · PERC Monocrystalline
Coefficient Pmax -0.335 %/°C Strong top 14% of its segment
Coefficient Voc · Isc -0.265 · 0.045 %/°C
NOCT 45 °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 345 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
-0.335 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Solarspace SS8-54HSB-420M 420 W 21.51% -0.335 21.0 kg You are here
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +45 W, +2.3 pp, +5 yr warranty
LX-465M/182R-96+ GG 465 W 23.80% -0.260 23.5 kg Cooler, +2.3 pp, +5 yr warranty
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg Cooler, +2.2 pp, +15 yr warranty
AIKO-A470-MAH54Mb 470 W 23.60% -0.260 21.5 kg +50 W, cooler, +2.1 pp
AIKO-A460-MAH54Mb 460 W 23.60% -0.290 20.5 kg Cooler, +2.1 pp, +5 yr warranty
HSM-BD54-LA470 470 W 23.60% -0.260 21.5 kg +50 W, cooler, +2.1 pp
SS8-54HSB-395M 395 W 20.23% -0.335 21.0 kg -25 W, -1.3 pp
SS8-54HSB-400M 400 W 20.48% -0.335 21.0 kg -20 W, -1.0 pp
SS8-54HSB-405M 405 W 20.74% -0.335 21.0 kg -15 W, -0.8 pp
SS8-54HSB-410M 410 W 21.00% -0.335 21.0 kg -10 W, -0.5 pp
SS8-54HSB-415M 415 W 21.25% -0.335 21.0 kg -0.3 pp
SS8-54HD-425N 425 W 21.76% -0.290 24.0 kg Cooler, heavier, +5 yr warranty
SS8-54HD-430N 430 W 22.02% -0.290 24.0 kg Cooler, heavier, +5 yr warranty
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +90 W, cooler, +3.5 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +75 W, cooler, +3.3 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +85 W, cooler, +3.2 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
Is the Solarspace SS8-54HSB 410-420M Lumina I series still available for purchase?
The Lumina I series has been discontinued and may be difficult to source as new stock. If you need all-black PERC half-cut modules rated up to 420 Wp, check with your distributor for remaining inventory or consider a newer Solarspace series with comparable aesthetics and performance specifications.
What warranty does the Solarspace SS8-54HSB 410-420M Lumina I carry?
Solarspace provides a 12-year product warranty covering workmanship and materials, plus a 25-year linear power output warranty. Over that 25-year period the module must maintain a specified minimum output relative to its rated 410–420 Wp nameplate power, which is the standard commitment expected from Tier 1 manufacturers.
What does half-cut PERC technology mean in the Lumina I series, and does it matter for my installation?
Half-cut cells are physically split in two, reducing internal resistance and current losses within each cell. PERC adds a rear reflective passivation layer that bounces unabsorbed light back through the silicon, boosting overall efficiency. In practice this combination delivers more consistent energy output under partial shading from chimneys or antennas and higher daily energy yield compared to conventional full-cell designs.
How does the Solarspace Lumina I perform on roofs with partial shading?
The combination of half-cut cells and a multi busbar (MBB) layout means shading one section of the module has a smaller impact on the remaining cells than in conventional full-cell modules. This keeps energy yield higher under real-world conditions where perfect, unobstructed solar exposure is not always achievable, such as roofs with dormers, antennas, or neighboring structures.
Is the Solarspace SS8-54HSB 410-420M a bifacial module?
No, the Lumina I is a monofacial, all-black module. The rear surface is opaque and does not generate power from reflected irradiance. This was a deliberate design choice to achieve a uniform black appearance with no aesthetic compromises, forgoing the rear-side energy bonus that bifacial modules offer.
Does the all-black frame and backsheet of the Lumina I negatively affect panel performance?
Black surfaces can run marginally warmer under peak sun, which slightly reduces instantaneous efficiency. However, the MBB layout and gallium doping in the Lumina I help limit thermal degradation and slow long-term power loss. For a typical residential installation the practical difference is minimal, and the benefit of a uniform black roofline is typically the priority for premium-segment buyers.
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