--- title: "Maxeon SPR-MAX7-475 475W Solar Panel - Specs & Review | ComparePV" description: "Maxeon SPR-MAX7-475 475W solar panel. Specs: 24.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/maxeon-spr-max7-475" updated: 2026-09-11 --- # Maxeon SPR-MAX7-475 Warranty pick, weak in heat 156 panels in the segment Back Contact 450-500 W ## Identity - **Manufacturer:** Maxeon - **Model:** SPR-MAX7-475 - **Series:** Maxeon 7 - **Rated power:** 475 W - **Cell technology:** Back Contact ## How it compares Compared against segment Back Contact 450-500 W (156 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 475 W | 475 W | Typical | | | 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 (kg) | 21.1 kg | 23.5 kg | Strong - top 16% | | | Performance warranty | 40 yrs | 30 yrs | Strong - top 1% | 1 | ### Full peer table | Measure | This panel | Segment median | Standing | 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 | ### 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 out for - **-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. - **Best for:** Residential, commercial and hot-climate. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 475 W - **Efficiency:** 24.00 % - **Voltage at Pmax (Vmp):** 38.06 V - **Current at Pmax (Imp):** 12.48 A - **Open-circuit voltage (Voc):** 44.47 V - **Short-circuit current (Isc):** 13.20 A - **Max system voltage:** 1000 V ### Temperature - **Temperature coefficient of Pmax:** -0.270 %/degC - **Temperature coefficient of Voc:** -0.236 %/degC - **Temperature coefficient of Isc:** 0.058 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** Back Contact - **Cell count:** 120 ### Physical - **Length:** 1913 mm - **Width:** 1035 mm - **Thickness:** 35 mm - **Weight:** 21.1 kg - **Area:** 1.98 m2 - **Power density:** 239.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 40 years - **Performance warranty:** 40 years - **Output guaranteed at end of warranty:** 88.2 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.25 % - **Output after 30 years:** 431 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 303 of 14005 | | Power density | 336 of 14005 | | Temperature coefficient | 1280 of 14005 | | Weight | 446 of 14005 | | Warranty | 1 of 14005 | ## Pros - **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. ## Cons - **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. ## About this series 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. ## Notable figures - 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 ## Questions ### 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). ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/67bdb26a42755b16fbe08e67_SunPower_Maxeon_7-0bbe7d7eb641.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +35 W, +1.0 pp, -10 yr warranty | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +20 W, +0.8 pp, -10 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, +0.7 pp, -10 yr warranty | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +15 W, +0.5 pp, -10 yr warranty | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +25 W, cooler, -10 yr warranty | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +25 W, +0.5 pp, -10 yr warranty | | [Maxeon SPR-MAX7-465](https://comparepv.com/panel/maxeon-spr-max7-465) | 465 W | -10 W, -0.5 pp | | [Maxeon SPR-MAX7-470](https://comparepv.com/panel/maxeon-spr-max7-470) | 470 W | -0.3 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +85 W, +0.8 pp, -10 yr warranty | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +80 W, heavier, -10 yr warranty | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +75 W, lighter, -10 yr warranty | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +65 W, heavier, -10 yr warranty | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +65 W, heavier, -10 yr warranty | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +70 W, heavier, -10 yr warranty | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +70 W, heavier, -10 yr warranty | --- Source: https://comparepv.com/panel/maxeon-spr-max7-475 Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.