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Risen RSM40-8-420M
Risen Brand review

RSM40-8-420M

420 Wp PERC
ComparePV verdict

Space saver, no clear weak spot

Rank 11,061 of 14,129
Compare panels Datasheet PDF
Power (Wp)
420
Typical for its class
Efficiency (%)
21.80
Strong · top 1%
Density (Wp/m²)
218.5
Strong · top 1%
Temp (%/°C)
-0.340
Strong · top 24%
Weight (kg)
22.0
Typical · median 22.0 kg
Warranty (yrs)
25
Typical · median 25 yrs

The Risen Titan S series redefines performance standards in the micro-installation sector thanks to the use of innovative cells based on 210 mm silicon wafers. The use of triple-cut cell technology significantly reduces energy losses resulting from internal resistance, which translates into higher yields even in low sunlight. This design effectively solves the problem of limited installation space, allowing for high power generation from a small roof area. Thanks to advanced MBB multi-busbar technology, the panels show significantly lower susceptibility to harmful micro-cracks and increased resistance to extreme mechanical loads, which guarantees stable operation for decades. What distinguishes this line from market competitors is a unique combination of a low temperature coefficient and an exceptionally aesthetic design that blends perfectly with modern architecture. LCOE cost optimization ensures that every kilowatt-hour is produced more cheaply, which directly accelerates the return on investment in photovoltaics. This series is dedicated primarily to the residential sector, where high power density and the absolute reliability of components in variable climatic conditions typical of Poland are of key importance. This is an uncompromising solution for investors looking for premium segment technology, combining innovation with high module performance standards.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.80% 20.60% Strong · top 1% 7,085
Power density 218.5 206.2 Strong · top 1% 7,013
Temperature coefficient -0.340 -0.350 Strong · top 24% 8,846
Weight per kWp 52.4 53.0 Typical 5,904
Performance warranty 25 yrs 25 yrs Typical 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 0 caution
Best for

Residential and shaded-installations.

Strengths
218.5 watts per square metre

Top 1% of the PERC 400-450 W segment, against a median of 206.2. Ranked 7,013th in the whole database.

21.80% module efficiency

Top 1% of the PERC 400-450 W segment, against a median of 20.60%. Ranked 7,085th in the whole database.

-0.340 %/°C temperature coefficient

Top 24% of the PERC 400-450 W segment, against a median of -0.350.

Notes from the database
  • At 21.8% efficiency, this panel is 1.2pp above typical PERC 400-450W modules (median: 20.6%)
  • Power density of 218.5 W/m² packs 12.3 W/m² more into the same footprint vs PERC 400-450W median (206.2 W/m²)
  • At -0.34%/°C, hot weather performance is typical for PERC 400-450W panels
  • In the top 50% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 420 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.80 % Strong Segment median 20.60%
Vmpp · Impp 35.38 V · 11.88 A Operating point at max power
Voc · Isc 42.49 V · 12.59 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 22.0 kg Typical Typical · median 22.0 kg
Cells 120 · PERC Monocrystalline
Coefficient Pmax -0.340 %/°C Strong top 24% of its segment
Coefficient Voc · Isc -0.250 · 0.040 %/°C
NOCT 44 °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

Datasheet charts

Open datasheet PDF

Measured curves published by Risen in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 420 Wp appear here. The rest cover the whole series.

I-V characteristics at different temperatures I-V characteristics 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
-0.340 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Risen RSM40-8-420M 420 W 21.80% -0.340 22.0 kg You are here
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +45 W, +2.0 pp, +5 yr warranty
LX-465M/182R-96+ GG 465 W 23.80% -0.260 23.5 kg Cooler, +2.0 pp, +5 yr warranty
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg Cooler, +1.9 pp, +15 yr warranty
AIKO-A470-MAH54Mb 470 W 23.60% -0.260 21.5 kg +50 W, cooler, +1.8 pp
AIKO-A460-MAH54Mb 460 W 23.60% -0.290 20.5 kg Cooler, +1.8 pp, +5 yr warranty
HSM-BD54-LA470 470 W 23.60% -0.260 21.5 kg +50 W, cooler, +1.8 pp
RSM40-8-395M 395 W 20.50% -0.340 22.0 kg -25 W, -1.3 pp
RSM40-8-400M 400 W 20.80% -0.340 22.0 kg -20 W, -1.0 pp
RSM40-8-405M 405 W 21.10% -0.340 22.0 kg -15 W, -0.7 pp
RSM40-8-410M 410 W 21.30% -0.340 22.0 kg -10 W, -0.5 pp
RSM40-8-415M 415 W 21.60% -0.340 22.0 kg Very close match
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +90 W, cooler, +3.2 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +75 W, cooler, +3.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +85 W, cooler, +2.9 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +85 W, cooler, +2.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +70 W, cooler, +2.7 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 3708 panels of the same or similar size to this one, within ±50 mm. See them here Found 4212 panels of the same or similar size to this one, within ±100 mm. See them here

About the Titan S series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

Are Risen Titan S panels still available for purchase?
The Risen Titan S series has been discontinued and is no longer in active production. If you need similar specifications, consider newer Risen lineups or other Tier 1 manufacturers offering PERC or TOPCon technology. It is worth checking with authorized distributors, as limited warehouse stock may still be available.
What warranty does Risen offer on the Titan S series?
Risen provides a 12-year product warranty and a 25-year linear power output warranty on the Titan S series. This guarantees that modules maintain output above the declared threshold for a quarter century. As a Tier 1 manufacturer, Risen's financial standing supports reliable warranty claim fulfillment in the event of defects or power degradation.
How does the triple-cut cell technology in Risen Titan S panels work?
Risen Titan S uses PERC cells based on 210 mm silicon wafers divided into three equal segments. Smaller cell segments carry lower current, reducing resistive losses and thermal stress. Combined with multi-busbar (MBB) interconnection, this design delivers higher overall efficiency and significantly reduces the risk of microcrack formation compared to standard full-cell modules.
Does the Risen Titan S perform well in low-light conditions and Central European climates?
Yes. The combination of PERC cells, triple-cut design, and MBB busbars improves energy yield under diffuse irradiance and low sun angles - conditions prevalent in Poland during autumn and winter. A low temperature coefficient also ensures efficient operation on cold, sunny days when cell temperatures drop well below 25°C.
What is the maximum power output of a Risen Titan S panel, and is it suitable for small rooftops?
The Risen Titan S series reaches up to 420 Wp peak power. High power density - achieved through 210 mm triple-cut PERC cells - enables substantial energy output from a smaller roof area. This makes it an excellent choice for residential buildings with limited mounting space where maximizing array output without expanding the footprint is a priority.
Is Risen Energy a reliable solar panel manufacturer worth considering?
Risen Energy is a Chinese manufacturer consistently rated Tier 1 by independent analytical agencies, indicating strong financial stability and the capacity to honor 25-year warranty obligations. The company operates its own production lines, implements PERC technology, and positioned the Titan S as a premium residential product - making it a credible choice for prosumer PV installations.
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