Solar Stack
Solar Stack
How it worksGuidesAdd Equipment
Sign in
Solar Stack

Free solar panel & inverter compatibility checker. Verify your PV string configuration is safe before installation.

Tools

  • Calculator
  • Panel Matcher
  • Inverter Finder
  • Inverter Compare
  • Panel Replacement
  • Cable sizing

Resources

  • Guides
  • How it works
  • Standards & Compliance
  • Data API
  • Replacement methodology
  • Add Equipment
  • Feedback

Legal

  • About
  • Privacy Policy
  • Terms of Service
  • Cookie Policy

© 2026 Solar Stack

All replacements

Find replacement for GCL-NT12R54BGDF-510

510 W TOPCon solar panel with 108 cells. Voc 40.9 V · Isc 15.47 A · TcVoc -0.25%/°C.

Select the panel you want to replace

Show only panels with matching cell technology

Compatible Replacements

187 panels found · 4152 panels excluded

Suntech STP515S-H54-Nth+

515 W

TOPCon
94Good match
ParameterOriginalReplacementDeviation
Voc40.9 V40.89 V0.0%
Vmpp34.49 V34.62 V0.4%
Isc15.47 A15.78 A2.0%
Impp14.79 A14.88 A0.6%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
JinkoSolar JKM515N-54HL4M-BDV

515 W

TOPCon
94Good match
ParameterOriginalReplacementDeviation
Voc40.9 V40.89 V0.0%
Vmpp34.49 V34.62 V0.4%
Isc15.47 A15.78 A2.0%
Impp14.79 A14.88 A0.6%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Suntech STP515S-H54-Nkh+

515 W

TOPCon
94Good match
ParameterOriginalReplacementDeviation
Voc40.9 V40.89 V0.0%
Vmpp34.49 V34.62 V0.4%
Isc15.47 A15.78 A2.0%
Impp14.79 A14.88 A0.6%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Astronergy CHSM54RNDGF-BH500

500 W

TOPCon
93Good match
ParameterOriginalReplacementDeviation
Voc40.9 V40.89 V0.0%
Vmpp34.49 V34.02 V1.4%
Isc15.47 A15.52 A0.3%
Impp14.79 A14.7 A0.6%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Suntech STP510S-H54-Nkh+

510 W

TOPCon
90Good match
ParameterOriginalReplacementDeviation
Voc40.9 V40.72 V0.4%
Vmpp34.49 V34.39 V0.3%
Isc15.47 A15.73 A1.7%
Impp14.79 A14.83 A0.3%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Suntech STP510S-H54-Nth+

510 W

TOPCon
90Good match
ParameterOriginalReplacementDeviation
Voc40.9 V40.72 V0.4%
Vmpp34.49 V34.39 V0.3%
Isc15.47 A15.73 A1.7%
Impp14.79 A14.83 A0.3%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
JinkoSolar JKM510N-54HL4M-BDV

510 W

TOPCon
90Good match
ParameterOriginalReplacementDeviation
Voc40.9 V40.72 V0.4%
Vmpp34.49 V34.39 V0.3%
Isc15.47 A15.73 A1.7%
Impp14.79 A14.83 A0.3%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
DMEGC DM520G12RT-B54HSW

520 W

TOPCon
89Good match
ParameterOriginalReplacementDeviation
Voc40.9 V40.88 V0.0%
Vmpp34.49 V34.85 V1.0%
Isc15.47 A15.88 A2.7%
Impp14.79 A14.92 A0.9%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
Astronergy CHSM54RNDGF-BH505

505 W

TOPCon
89Good match
ParameterOriginalReplacementDeviation
Voc40.9 V41.05 V0.4%
Vmpp34.49 V34.15 V1.0%
Isc15.47 A15.61 A0.9%
Impp14.79 A14.79 A0.0%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
DMEGC DM515G12RT-B54HBW

515 W

TOPCon
89Good match
ParameterOriginalReplacementDeviation
Voc40.9 V40.75 V0.4%
Vmpp34.49 V34.61 V0.3%
Isc15.47 A15.83 A2.3%
Impp14.79 A14.88 A0.6%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
DMEGC DM520G12RT-B54HBW

520 W

TOPCon
89Good match
ParameterOriginalReplacementDeviation
Voc40.9 V40.88 V0.0%
Vmpp34.49 V34.85 V1.0%
Isc15.47 A15.88 A2.7%
Impp14.79 A14.92 A0.9%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C
DMEGC GH515G12RT-B54HST

515 W

TOPCon
89Good match
ParameterOriginalReplacementDeviation
Voc40.9 V40.75 V0.4%
Vmpp34.49 V34.61 V0.3%
Isc15.47 A15.83 A2.3%
Impp14.79 A14.88 A0.6%
TcVoc-0.25 %/°C-0.25 %/°C±0.000 %/°C
TcPmax-0.29 %/°C-0.29 %/°C±0.000 %/°C

String Compatibility Calculator

Verify the replacement panel works with your inverter

Panel Matcher

Find all compatible panels for a specific inverter

Already have panels?

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

Original Panel Specs

Voc

40.9 V

Vmpp

34.49 V

Isc

15.47 A

Impp

14.79 A

TcVoc

-0.25 %/°C

TcPmax

-0.29 %/°C

Pmax

510 W

Cells

108

Bifaciality

80%

Length

1962 mm

Width

1134 mm

Thickness

30 mm

Weight

27.3 kg

The GCL-NT12R54BGDF-510 is a 510 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.

Other models in this series

ModelPowerVocIsc
GCL-NT12R54BGDF-495495 W40.03 V15.4 A
GCL-NT12R54BGDF-500500 W40.32 V15.42 A
GCL-NT12R54BGDF-505505 W40.61 V15.44 A
GCL-NT12R54BGDF-515515 W41.19 V15.5 A
GCL-NT12R54BGDF-520520 W41.48 V15.53 A

Frequently Asked Questions

What specs must match when replacing the GCL-NT12R54BGDF-510?

The most critical specs to match are: cell count (must be exactly 108), Voc close to 40.9 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.

Can I use a higher wattage replacement for the GCL-NT12R54BGDF-510?

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.

What happens if the replacement panel has different voltage specs?

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 GCL-NT12R54BGDF-510.