590 W TOPCon solar panel with 144 cells. Voc 51.98 V · Isc 14.3 A · TcVoc -0.26%/°C.
Select the panel you want to replace
Panel not in the catalogue?
135 of the 4,444 panels in the catalogue can replace TommaTech TT590-144TNB10. 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.
Near-identical electrics — a drop-in swap for the same string.
Match 100 % · 3 models
Small differences within tolerance — safe once verified in the calculator with your inverter.
Match 80–92 % · 31 models
Noticeable differences — the string voltage and current need a careful check.
Match 60–79 % · 72 models
Large differences — a real risk of a mismatched string; prefer a closer panel.
Match 36–59 % · 29 models
String Compatibility Calculator
Verify the replacement panel works with your inverter
Panel Matcher
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Find an inverter that fits your panel array with the right MPPT range and DC/AC ratio.
How the Algorithm Works
Learn how panels are scored and matched
Voc
51.98 V
Vmpp
43.35 V
Isc
14.3 A
Impp
13.62 A
TcVoc
-0.26 %/°C
TcPmax
-0.3 %/°C
Pmax
590 W
Cells
144
Length
2278 mm
Width
1134 mm
Thickness
35 mm
Weight
31 kg
The TommaTech TT590-144TNB10 is a 590 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 |
|---|---|---|---|
| TT595-144TNB10 | 595 W | 52.18 V | 14.36 A |
| TT600-144TNB10 | 600 W | 52.38 V | 14.42 A |
| TT605-144TNB10 | 605 W | 52.58 V | 14.48 A |
| TT610-144TNB10 | 610 W | 52.78 V | 14.54 A |
| TT615-144TNB10 | 615 W | 52.98 V | 14.6 A |
| TT620-144TNB10 | 620 W | 53.18 V | 14.66 A |
The most critical specs to match are: cell count (must be exactly 144), Voc close to 51.98 V (within ±5%), and temperature coefficient TcVoc close to -0.26%/°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 TommaTech TT590-144TNB10.