615 W PERC solar panel with 120 cells. Voc 42.2 V · Isc 18.47 A · TcVoc -0.25%/°C.
Select the panel you want to replace
Panel not in the catalogue?
12 of the 4,444 panels in the catalogue can replace Risen RSM120-8-615M. Before you buy, check your pick in the string calculator with your inverter.
CloseNoticeableLarge differenceTap or click a difference to see what it means for your string.
Small differences within tolerance — safe once verified in the calculator with your inverter.
Match 82–91 % · 3 models
Noticeable differences — the string voltage and current need a careful check.
Match 61–78 % · 9 models
String Compatibility Calculator
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Panel Matcher
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How the Algorithm Works
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Voc
42.2 V
Vmpp
35.26 V
Isc
18.47 A
Impp
17.45 A
TcVoc
-0.25 %/°C
TcPmax
-0.34 %/°C
Pmax
615 W
Cells
120
Length
2172 mm
Width
1303 mm
Thickness
35 mm
Weight
30 kg
The Risen RSM120-8-615M is a 615 W solar panel. Finding a compatible replacement requires matching the original electrical characteristics — particularly Voc, Vmpp, Isc, and temperature coefficients — to ensure safe operation within the same string.
Use the form above to find panels that match these specifications. Then verify the replacement in the String Compatibility Calculator with your inverter.
| Model | Power | Voc | Isc |
|---|---|---|---|
| RSM120-8-590M | 590 W | 41.2 V | 18.21 A |
| RSM120-8-595M | 595 W | 41.4 V | 18.26 A |
| RSM120-8-600M | 600 W | 41.6 V | 18.32 A |
| RSM120-8-605M | 605 W | 41.8 V | 18.37 A |
| RSM120-8-610M | 610 W | 42 V | 18.42 A |
The most critical specs to match are: cell count (must be exactly 120), Voc close to 42.2 V (within ±5%), and temperature coefficient TcVoc close to -0.25%/°C. If Voc differs significantly, the string voltage at extreme temperatures may shift outside the inverter's MPPT range. The replacement finder above pre-screens all candidates by these criteria.
A higher wattage panel usually has a higher Vmpp or Isc, which can affect string voltage and current. Small increases (up to 10–15%) are typically safe if the other electrical specs align. The replacement finder shows a compatibility score — 'Exact match' means the specs align closely. Always verify the replacement in the String Compatibility Calculator with your inverter before installation.
If the replacement has a significantly different Voc or Vmpp, the string voltage may shift outside the inverter's MPPT range, reducing energy production or causing faults. This effect is amplified at temperature extremes: at low temperatures, voltage rises by the TcVoc coefficient. The replacement finder automatically accounts for this — it scores candidates by how closely the electrical specs match the original Risen RSM120-8-615M.