Skip to main content

SPR-MAX6-435

435 Wp Back Contact
ComparePV verdict

Warranty pick, no clear weak spot

Rank 1,802 of 14,005
Compare panels Datasheet PDF
Power (Wp)
435
Typical for its class
Efficiency (%)
22.50
Strong · top 19%
Density (Wp/m²)
225.2
Strong · top 24%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
20.9
Typical · median 20.8 kg
Warranty (yrs)
40
Strong · top 7%

Maxeon 6 panels redefine performance standards through the use of patented IBC cell technology, in which all electrical connections have been moved to the back of the module. This solution completely eliminates shading of the active surface by front busbars, which translates into maximum absorption of sunlight even on cloudy days. The unique design based on a solid copper foundation makes this series almost completely resistant to corrosion and stress cracks, which often shorten the lifespan of standard components. Investing in these modules effectively solves the problem of limited roof space, as their record-breaking efficiency allows them to generate significantly more energy per square meter than competing solutions. This is a product dedicated to the most demanding investors who care about the longest warranty on the market and impeccable installation aesthetics. Maxeon 6 stands out with the lowest degradation rate, which guarantees yield stability for over four decades of use. Thanks to the use of innovative shingled technology, these panels handle partial shading and extreme temperature fluctuations much better, representing currently the most reliable choice for modern photovoltaic systems focusing on uncompromising quality of workmanship.

Ranking

52 panels in the segment Back Contact 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.50% 22.30% Strong · top 19% 4,222
Power density 225.2 222.7 Strong · top 24% 4,429
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 48.0 48.2 Typical 2,031
Performance warranty 40 yrs 25 yrs Strong · top 7% 1
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

8 positive · 2 caution
Best for

Residential, commercial, shaded-installations and hot-climate.

Strengths
40 year performance warranty

Top 7% of the Back Contact 400-450 W segment, against a median of 25 yrs. Ranked 1st in the whole database.

22.50% module efficiency

Top 19% of the Back Contact 400-450 W segment, against a median of 22.30%.

225.2 watts per square metre

Top 24% of the Back Contact 400-450 W segment, against a median of 222.7.

What owners get
Back-contact IBC cells, no front busbars

The patented Interdigitated Back Contact technology moves all electrical connections to the rear of the cell, eliminating shading from front busbars. This enables efficiency up to 22.8%, outperforming comparable 440 Wp modules from JA Solar (22.5%) and Lina Energy (22.37%).

Industry-low power degradation

Maxeon 6 is warranted for a maximum annual degradation of 0.25% for 39 years after the first year, versus an industry average of roughly 0.5-0.55% per year on 25-year warranted panels. The result is a guaranteed 88.3% of nameplate power after 40 years.

Longest warranty in the market: 40 years

The manufacturer offers a combined 40-year product and power warranty, compared to the typical 25-30 years seen in premium segment (e.g. Trina, JA Solar). This directly lowers LCOE over the full system lifecycle.

Copper foundation improves durability

A solid copper backing under each cell eliminates the microcracks and corrosion points typical of soldered ribbon interconnects, a leading cause of power loss after 15-20 years in standard modules.

High power density per roof area

With up to 22.8% efficiency and 440 Wp of power, Maxeon 6 delivers more energy per square meter than most Tier-1 alternatives, a key advantage on space-constrained pitched roofs.

Trade-offs
Notable price premium

Installations using Maxeon modules cost roughly $0.20-0.45/W more than the market average, and 40-80% more than value-segment panels (LONGi, Trina, Jinko). This can lengthen the payback period despite higher efficiency.

40-year warranty requires registration

Full 40-year product and power coverage is not automatic in every country or installation - it requires manufacturer registration, otherwise a shorter 25-year standard warranty applies.

Notes from the database
  • At 22.5% efficiency, this panel is on par with typical Back Contact 400-450W modules
  • At 225.2 W/m² power density, roof space requirements are typical for Back Contact 400-450W panels
  • At -0.29%/°C, hot weather performance is typical for Back Contact 400-450W panels
  • In the top 30% for efficiency among all Back Contact panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 435 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.50 % Strong Segment median 22.30%
Vmpp · Impp 40.30 V · 10.82 A Operating point at max power
Voc · Isc 48.20 V · 11.57 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1872×1032×40 mm · 1.93 m² of roof
Weight 20.9 kg Typical Typical · median 20.8 kg
Cells 66 · Back Contact Monocrystalline
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.239 · 0.057 %/°C
Product warranty 40 years Hardware defects only
Performance warranty 40 years Strong top 7% · median 25 yrs
End-of-warranty output 88.2 % Equals 395 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
-0.290 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Maxeon SPR-MAX6-435 435 W 22.50% -0.290 20.9 kg You are here
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg +50 W, +1.8 pp, -10 yr warranty
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg +50 W, +1.8 pp, -10 yr warranty
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg +50 W, +1.8 pp, -10 yr warranty
GK-5-54HG-485M 485 W 24.30% -0.260 21.0 kg +50 W, +1.8 pp, -10 yr warranty
ZEUS 3.0+ 108 485WP 485 W 24.30% -0.260 24.2 kg +50 W, +1.8 pp, -10 yr warranty
SPR-MAX6-425 425 W 22.00% -0.290 20.9 kg -10 W, -0.5 pp
SPR-MAX6-440 440 W 22.80% -0.290 20.9 kg +0.3 pp
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg +40 W, cooler, +1.5 pp
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg +35 W, cooler, +1.2 pp
SPR-MAX7-465 465 W 23.50% -0.270 21.1 kg +30 W, cooler, +1.0 pp
SPR-MAX3-430-R 430 W 22.70% -0.270 21.2 kg Cooler
SPR-MAX3-425-R 425 W 22.40% -0.270 21.2 kg -10 W, cooler
LEPV 132 ULTRA PREMIUM BLACK 440Wp (LEPV 440) 440 W 22.37% -0.290 21.0 kg -10 yr warranty
NS-420MH-80 420 W 22.28% -0.290 20.0 kg -15 W, -0.2 pp, -15 yr warranty

Found 11 panels of the same or similar size to this one, within ±10 mm. See them here Found 49 panels of the same or similar size to this one, within ±25 mm. See them here Found 90 panels of the same or similar size to this one, within ±50 mm. See them here Found 397 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 6 and why does it matter?
Back Contact (IBC) technology moves all electrical connections to the rear of the cell, leaving the front surface completely free of busbars. This eliminates front-surface shading of the active silicon layer. In practice, it delivers efficiency up to 22.8% — well above standard PERC or TOPCon modules in the same price range — generating more energy from the same square footage of roof space.
What does the Maxeon 6 warranty actually cover and for how long?
The Maxeon 6 comes with a 40/40 warranty: 40 years on product defects and materials, and 40 years on power output. The power warranty guarantees a minimum of 98% output in year one, then a maximum annual degradation of 0.25% over the following 39 years. That means after four decades the panel will still deliver at least 88% of its rated 440 W output — the longest warranty currently available in the residential solar panel market.
How do Maxeon 6 440W panels perform under partial shading and on overcast days?
Very well. The absence of front busbars in IBC technology means every square centimeter of the cell generates current without obstruction. The Maxeon 6 also incorporates shingled cell technology, which minimizes mismatch losses from partial shading caused by chimneys, dormers, or antennas. The low temperature coefficient of -0.29%/°C helps the modules maintain strong output on hot summer days as well as cool, overcast ones.
What are the Maxeon 6 module dimensions and weight — will it fit on a standard pitched roof?
The Maxeon 6 440W panel measures 1872 x 1032 x 40 mm and weighs 21.8 kg. These dimensions are comparable to standard 66-cell modules, so installation on conventional rail systems and roof hooks requires no special modifications. Its 22.8% efficiency means fewer panels are needed to reach a target system size — a significant advantage when roof space is limited.
How does the Maxeon 6 compare to cheaper PERC modules available on the market?
The Maxeon 6 outperforms PERC modules in three key areas. Efficiency: IBC reaches up to 22.8% versus 20-21% for PERC. Durability: the copper-backed cell structure resists corrosion and micro-cracking that degrade standard cells after just a few years. Degradation rate: 0.25% per year for the Maxeon 6 versus a typical 0.45-0.55% for PERC. The higher upfront cost translates into a lower LCOE over the panel's 40-plus-year operating life.
Is Maxeon a Tier 1 manufacturer and is the product certified for the European market?
Yes, Maxeon Solar Technologies is listed as a Tier 1 manufacturer by major bankability assessment institutions. Headquartered in Singapore, the company maintains sales and warranty service across Europe. The Maxeon 6 holds IEC 61215, IEC 61730, and UL 61730 certifications, which are required for eligibility under European residential solar incentive programs.
Add to compare