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Maxeon Brand review

SPR-MAX7-475

475 Wp Back Contact
ComparePV verdict

Warranty pick, weak in heat

Rank 389 of 14,005
Compare panels Datasheet PDF
Power (Wp)
475
Typical for its class
Efficiency (%)
24.00
Strong · top 22%
Density (Wp/m²)
239.9
Typical · median 235.2
Temp (%/°C)
-0.270
Weak · bottom 9%
Weight (kg)
21.1
Strong · 2.4 kg below median
Warranty (yrs)
40
Strong · top 1%

Maxeon 7 panels are a revolutionary step in IBC technology that sets new standards for efficiency and durability in the photovoltaic sector. Engineered based on an innovative back-contact cell architecture, they completely eliminate the shading problem caused by front metal ribbons, which translates into record-breaking solar energy conversion efficiency. The use of a unique cell design with high crack resistance ensures that these panels perform perfectly in extreme weather conditions and under large temperature fluctuations. This is an ideal solution for investors with limited roof space who want to obtain maximum power from every square meter of the installation. This series also stands out for the longest 40-year product and power warranty on the market, proving uncompromising quality and stability of parameters over time. Thanks to an aesthetic, all-black finish, these panels blend harmoniously with modern architecture, eliminating compromises between performance and design. Unlike standard modules, this technology minimizes the risk of voltage- and temperature-induced degradation, ensuring the highest energy yield over the entire lifecycle of the installation. It is a premium-class investment for the most demanding users seeking complete security and energy independence for many decades.

Ranking

156 panels in the segment Back Contact 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 24.00% 23.50% Strong · top 22% 303
Power density 239.9 235.2 Typical 336
Temperature coefficient -0.270 -0.260 Weak · bottom 9% 1,280
Weight per kWp 44.4 48.0 Strong · top 16% 446
Performance warranty 40 yrs 30 yrs Strong · top 1% 1
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

8 positive · 4 caution
Best for

Residential, commercial and hot-climate.

Not ideal for

Hot climates.

Strengths
40 year performance warranty

Top 1% of the Back Contact 450-500 W segment, against a median of 30 yrs. Ranked 1st in the whole database.

44.4 kg per kWp

Top 16% of the Back Contact 450-500 W segment, against a median of 48.0.

24.00% module efficiency

Top 22% of the Back Contact 450-500 W segment, against a median of 23.50%.

Watch-outs
-0.270 %/°C temperature coefficient

Bottom 9% of the Back Contact 450-500 W segment, against a median of -0.260. Ranked 1,280th in the whole database.

What owners get
Highest efficiency in the segment

Efficiency of 23.5-24.0% exceeds direct competitors: JA Solar JAM54D40 LB (23.8%), Astronergy ASTRO N7s 2.0 (23.8%), and Longi Hi-MO X10 (23.3%). This results from the Back Contact (IBC) cell architecture, which eliminates shading from front-side metallization grids.

Unmatched 40-year warranty

The 40-year product and power warranty significantly exceeds the market standard of 25-30 years offered by peers such as JA Solar or Astronergy. The manufacturer guarantees roughly 88% of nominal power retained after 40 years of operation.

Premium aesthetics with no visible busbars

Back Contact technology hides the entire conductive grid behind the cell, resulting in a fully black, uniform surface with no visible metal ribbons — a key advantage for residential installations where roof appearance matters.

Tier-1 manufacturer with SunPower heritage

Maxeon Solar Technologies (headquartered in Singapore, spun off from SunPower in 2020) is a bankable Tier-1 manufacturer leveraging over 20 years of R&D in back-contact cell technology, providing strong financial credibility for investors and lenders.

High power density per roof area

465-475 Wp in a standard module footprint delivers more energy per unit of limited roof space than typical PERC/TOPCon panels of similar dimensions, which matters for installations with restricted mounting area.

Trade-offs
Significant price premium

Installed cost for Maxeon 7 reaches approximately $3.50-4.20/W, 40-60% higher than budget panels and roughly 20-40% higher than comparable quality TOPCon modules (~$2.50-2.85/W). Payback on this premium typically takes 8-12 years.

No bifacial variant available

Unlike many competing premium N-type modules (e.g., Longi Hi-MO X10, also offered in bifacial variants), the Maxeon 7 series is monofacial only, ruling out additional albedo-driven energy gain in ground-mount or elevated installations.

Lower power ceiling than the peer leader

The highest-power Maxeon 7 variant tops out at 475 Wp, while the Longi Hi-MO X10 Explorer (LR7-54HVH) in the same format is offered up to 490 Wp, meaning less installed capacity for the same panel count on large-scale projects.

Notes from the database
  • Efficiency of 24.0% matches the Back Contact 450-500W median
  • Power density of 239.9 W/m² packs 4.7 W/m² more into the same footprint vs Back Contact 450-500W median (235.2 W/m²)
  • Temperature coefficient of -0.27%/°C matches the Back Contact 450-500W median
  • At 21.1 kg, this panel is 2.4 kg lighter than Back Contact 450-500W median (23.5 kg) - easier handling during installation
  • Ranked #303 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 475 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 24.00 % Strong Segment median 23.50%
Vmpp · Impp 38.06 V · 12.48 A Operating point at max power
Voc · Isc 44.47 V · 13.20 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1913×1035×35 mm · 1.98 m² of roof
Weight 21.1 kg Strong Strong · 2.4 kg below median
Cells 120 · Back Contact Monocrystalline
Coefficient Pmax -0.270 %/°C Weak bottom 9% of its segment
Coefficient Voc · Isc -0.236 · 0.058 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 40 years Hardware defects only
Performance warranty 40 years Strong top 1% · median 30 yrs
End-of-warranty output 88.2 % Equals 431 W guaranteed
Degradation 2.00 → 0.25 % First year, then annual

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
-0.270 %/°C against a segment median of -0.260
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Maxeon SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +35 W, +1.0 pp, -10 yr warranty
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +20 W, +0.8 pp, -10 yr warranty
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, +0.7 pp, -10 yr warranty
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +15 W, +0.5 pp, -10 yr warranty
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +25 W, cooler, -10 yr warranty
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +25 W, +0.5 pp, -10 yr warranty
SPR-MAX7-465 465 W 23.50% -0.270 21.1 kg -10 W, -0.5 pp
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg -0.3 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +85 W, +0.8 pp, -10 yr warranty
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +80 W, heavier, -10 yr warranty
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +75 W, lighter, -10 yr warranty
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +65 W, heavier, -10 yr warranty
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +65 W, heavier, -10 yr warranty
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg +70 W, heavier, -10 yr warranty
LR7-60HVH-545M 545 W 24.20% -0.260 25.0 kg +70 W, heavier, -10 yr warranty

Found 8 panels of the same or similar size to this one, within ±10 mm. See them here Found 47 panels of the same or similar size to this one, within ±25 mm. See them here Found 238 panels of the same or similar size to this one, within ±50 mm. See them here Found 1886 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is Back Contact (IBC) technology in the Maxeon 7, and why does it matter?
IBC (Interdigitated Back Contact) technology moves all electrodes and conductive traces to the rear of the cell, leaving the front surface completely free of metal. This allows every square millimeter of the front to capture sunlight, pushing module efficiency up to 24% — among the highest available for residential rooftop applications. The design also minimizes micro-crack risk and eliminates potential-induced degradation (PID).
What does the Maxeon 7 warranty cover and how long does it last?
Maxeon provides a 40-year warranty covering both product defects and power output retention — the longest solar panel warranty currently on the market. The panel must deliver at least 98% of rated power in year one, 92% after 25 years, and 88.25% after 40 years. The warranty is legally binding and issued directly by Maxeon Solar Technologies, headquartered in Singapore.
Are Maxeon 7 panels a good fit for a small roof with limited space?
Yes — this is one of their primary advantages for space-constrained installations. A 475 W panel with module efficiency up to 24% generates significantly more energy per square meter than standard PERC or TOPCon modules. On a small roof, this translates into a higher total system capacity or achieving your target energy output with fewer panels than competing products would require.
How do Maxeon 7 panels perform in winter and cold-temperature conditions?
The IBC cell design delivers a low temperature coefficient of -0.27%/°C, meaning minimal power loss on hot days while the panel actually operates more efficiently in cold weather. Annual degradation stays below 0.3% — nearly half the rate of standard PERC modules. The panels are IEC-certified to withstand hail up to 45 mm in diameter, confirming durability under extreme weather conditions.
Are Maxeon 7 panels all-black and how do they look on a roof?
Yes, the Maxeon 7 series features a fully black finish — cells, frame, and backsheet all share a uniform dark color. Because IBC technology requires no metal busbars on the front surface, there are no visible ribbons or contacts, resulting in a clean, premium aesthetic that integrates seamlessly with modern architecture without any trade-off between appearance and performance.
How do Maxeon 7 panels compare to standard TOPCon or PERC modules?
Maxeon 7 uses IBC technology — more complex to manufacture but delivering higher module efficiency (up to 24%), a lower temperature coefficient (-0.27%/°C), and slower degradation (under 0.3%/year) compared to typical TOPCon (~0.4%/year) or PERC (~0.5%/year) panels. The 40-year product and power warranty is a further key differentiator, as most Tier 1 manufacturers cap coverage at 25 years, which directly impacts lifetime energy yield (LCOE).
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