Find replacement for Sunway SW550M-144

550 W PERC solar panel with 144 cells. Voc 49.9 V · Isc 13.8 A · TcVoc -0.26%/°C.

Original Panel

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Same technology onlyShow only panels with matching cell technology

Compatible Replacements

71 panels found · 3359 panels excluded

Sunway SW545M-144

545 W

PERC

95Exact match

Parameter	Original	Replacement	Deviation
Voc	49.9 V	49.8 V	0.2%
Vmpp	42.1 V	42 V	0.2%
Isc	13.8 A	13.71 A	0.7%
Impp	13.07 A	12.98 A	0.7%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.36 %/°C	-0.36 %/°C	±0.000 %/°C

München Solar MSMD550M10-72

550 W

PERC

89Good match

Parameter	Original	Replacement	Deviation
Voc	49.9 V	49.8 V	0.2%
Vmpp	42.1 V	41.6 V	1.2%
Isc	13.8 A	13.99 A	1.4%
Impp	13.07 A	13.23 A	1.2%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.36 %/°C	-0.36 %/°C	±0.000 %/°C

Sunway SW540M-144

540 W

PERC

89Good match

Parameter	Original	Replacement	Deviation
Voc	49.9 V	49.7 V	0.4%
Vmpp	42.1 V	41.9 V	0.5%
Isc	13.8 A	13.62 A	1.3%
Impp	13.07 A	12.89 A	1.4%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.36 %/°C	-0.36 %/°C	±0.000 %/°C

LONGi LR5-72HPH-555M

555 W

PERC

88Good match

Parameter	Original	Replacement	Deviation
Voc	49.9 V	49.95 V	0.1%
Vmpp	42.1 V	42.1 V	0.0%
Isc	13.8 A	14.04 A	1.7%
Impp	13.07 A	13.19 A	0.9%
TcVoc	-0.26 %/°C	-0.265 %/°C	±0.005 %/°C
TcPmax	-0.36 %/°C	-0.34 %/°C	±0.020 %/°C

Yingli Solar YL550D-49e 1/2

550 W

PERC

87Good match

Parameter	Original	Replacement	Deviation
Voc	49.9 V	49.82 V	0.2%
Vmpp	42.1 V	42 V	0.2%
Isc	13.8 A	13.97 A	1.2%
Impp	13.07 A	13.1 A	0.2%
TcVoc	-0.26 %/°C	-0.27 %/°C	±0.010 %/°C
TcPmax	-0.36 %/°C	-0.35 %/°C	±0.010 %/°C

Yingli Solar YL555D-49e 1/2

555 W

PERC

87Good match

Parameter	Original	Replacement	Deviation
Voc	49.9 V	49.97 V	0.1%
Vmpp	42.1 V	42.15 V	0.1%
Isc	13.8 A	14.04 A	1.7%
Impp	13.07 A	13.17 A	0.8%
TcVoc	-0.26 %/°C	-0.27 %/°C	±0.010 %/°C
TcPmax	-0.36 %/°C	-0.35 %/°C	±0.010 %/°C

JA Solar JAM72S30-550/MR

550 W

PERC

86Good match

Parameter	Original	Replacement	Deviation
Voc	49.9 V	49.9 V	0.0%
Vmpp	42.1 V	41.96 V	0.3%
Isc	13.8 A	14 A	1.4%
Impp	13.07 A	13.11 A	0.3%
TcVoc	-0.26 %/°C	-0.275 %/°C	±0.015 %/°C
TcPmax	-0.36 %/°C	-0.35 %/°C	±0.010 %/°C

LONGi LR5-72HPH-550M

550 W

PERC

86Good match

Parameter	Original	Replacement	Deviation
Voc	49.9 V	49.8 V	0.2%
Vmpp	42.1 V	41.95 V	0.4%
Isc	13.8 A	13.98 A	1.3%
Impp	13.07 A	13.12 A	0.4%
TcVoc	-0.26 %/°C	-0.265 %/°C	±0.005 %/°C
TcPmax	-0.36 %/°C	-0.34 %/°C	±0.020 %/°C

Ulica Solar UL-540M-144HVB

540 W

TOPCon

85Good match

Parameter	Original	Replacement	Deviation
Voc	49.9 V	49.9 V	0.0%
Vmpp	42.1 V	41.85 V	0.6%
Isc	13.8 A	13.61 A	1.4%
Impp	13.07 A	12.93 A	1.1%
TcVoc	-0.26 %/°C	-0.268 %/°C	±0.008 %/°C
TcPmax	-0.36 %/°C	-0.34 %/°C	±0.020 %/°C

Waaree Energies WSMD-545

545 W

PERC

85Good match

Parameter	Original	Replacement	Deviation
Voc	49.9 V	49.76 V	0.3%
Vmpp	42.1 V	41.9 V	0.5%
Isc	13.8 A	13.9 A	0.7%
Impp	13.07 A	13.02 A	0.4%
TcVoc	-0.26 %/°C	-0.27 %/°C	±0.010 %/°C
TcPmax	-0.36 %/°C	-0.35 %/°C	±0.010 %/°C

Sunway SW535M-144

535 W

PERC

84Good match

Parameter	Original	Replacement	Deviation
Voc	49.9 V	49.6 V	0.6%
Vmpp	42.1 V	41.8 V	0.7%
Isc	13.8 A	13.53 A	2.0%
Impp	13.07 A	12.8 A	2.1%
TcVoc	-0.26 %/°C	-0.26 %/°C	±0.000 %/°C
TcPmax	-0.36 %/°C	-0.36 %/°C	±0.000 %/°C

LogicPower LP-545M

545 W

PERC

83Good match

Parameter	Original	Replacement	Deviation
Voc	49.9 V	49.9 V	0.0%
Vmpp	42.1 V	41.93 V	0.4%
Isc	13.8 A	13.81 A	0.1%
Impp	13.07 A	13 A	0.5%
TcVoc	-0.26 %/°C	-0.285 %/°C	±0.025 %/°C
TcPmax	-0.36 %/°C	-0.35 %/°C	±0.010 %/°C

String Compatibility Calculator

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Panel Matcher

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How the Algorithm Works

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Original Panel Specs

Voc

49.9 V

Vmpp

42.1 V

Isc

13.8 A

Impp

13.07 A

TcVoc

-0.26 %/°C

TcPmax

-0.36 %/°C

Pmax

550 W

Cells

144

Length

2279 mm

Width

1134 mm

Thickness

35 mm

Weight

29 kg

The Sunway SW550M-144 is a 550 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

Power	Voc	Isc
530 W	49.5 V	13.44 A
535 W	49.6 V	13.53 A
540 W	49.7 V	13.62 A
545 W	49.8 V	13.71 A

Frequently Asked Questions

What specs must match when replacing the Sunway SW550M-144?

The most critical specs to match are: cell count (must be exactly 144), Voc close to 49.9 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.

Can I use a higher wattage replacement for the Sunway SW550M-144?

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 Sunway SW550M-144.