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Sunplus Brand review

745

745 Wp HJT Bifacial 90%
ComparePV verdict

Efficiency leader, weak in heat

Rank 836 of 14,005
Compare panels Datasheet PDF
Power (Wp)
745
Strong · top 1%
Efficiency (%)
24.00
Strong · top 1%
Density (Wp/m²)
239.8
Strong · top 1%
Temp (%/°C)
-0.300
Weak · bottom 2%
Weight (kg)
39.0
Strong · top 20%
Warranty (yrs)
30
Typical · median 30 yrs

The Sunplus Hi-Max series focuses on maximizing energy yield even when the roof or ground is not ideal - in variable sunlight, partial shading, and in installations where long-term stability is crucial. The modules utilize modern half-cut cell technology and refined connections, minimizing losses and better handling micro-shading. This translates to more predictable energy production in real-world operating conditions, rather than just in a laboratory setting.

A key feature of Hi-Max is the combination of bifacial construction with glass-glass technology, which improves resistance to environmental factors and supports long-term reliability. Additionally, Micro Gap Design is used, which enhances tolerance to shading and facilitates maintaining high efficiency in dense environments.

This is a good choice for installers and investors seeking high durability in residential, commercial, and larger ground-mounted projects - particularly where hassle-free operation and reliable energy yield are important.

Ranking

222 panels in the segment HJT 700-750 W
Metric This panel Median Position in segment Overall rank
Module efficiency 24.00% 23.02% Strong · top 1% 303
Power density 239.8 230.2 Strong · top 1% 339
Temperature coefficient -0.300 -0.240 Weak · bottom 2% 6,093
Weight per kWp 52.3 53.6 Strong · top 20% 5,847
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 1 caution
Best for

Commercial, utility-scale, shaded-installations and hot-climate.

Not ideal for

Hot climates.

Strengths
24.00% module efficiency

Top 1% of the HJT 700-750 W segment, against a median of 23.02%. Ranked 303rd in the whole database.

239.8 watts per square metre

Top 1% of the HJT 700-750 W segment, against a median of 230.2. Ranked 339th in the whole database.

52.3 kg per kWp

Top 20% of the HJT 700-750 W segment, against a median of 53.6.

Watch-outs
-0.300 %/°C temperature coefficient

Bottom 2% of the HJT 700-750 W segment, against a median of -0.240. Ranked 6,093rd in the whole database.

Notes from the database
  • 24.0% module efficiency - 1.0pp better than the HJT 700-750W median of 23.0%
  • Power density of 239.8 W/m² packs 9.6 W/m² more into the same footprint vs HJT 700-750W median (230.2 W/m²)
  • At -0.30%/°C, loses 0.06pp more power per degree than HJT 700-750W median (-0.24%/°C)
  • Bifaciality factor of 90% can add 4-14% extra yield with reflective mounting surface
  • Ranked #303 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 745 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 24.00 % Strong Segment median 23.02%
Vmpp · Impp 44.10 V · 16.84 A Operating point at max power
Voc · Isc 51.02 V · 17.72 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2384×1303×35 mm · 3.11 m² of roof
Weight 39.0 kg Strong Strong · top 20%
Cells 156 · HJT Monocrystalline
Bifaciality 90 % Rear output as a share of front
Coefficient Pmax -0.300 %/°C Weak bottom 2% of its segment
Coefficient Voc · Isc -0.240 · 0.040 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 90.0 % Equals 671 W guaranteed
Degradation 1.00 → 0.31 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Sunplus in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 745 Wp appear here. The rest cover the whole series.

Performance Warranty Performance Warranty Whole series

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
-
With bifacial gain
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.300 %/°C against a segment median of -0.240
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Sunplus 745 745 W 24.00% -0.300 39.0 kg You are here
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg -45 W, lighter, +1.0 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg -50 W, lighter, +0.9 pp
AIKO-A795-GRH78Dw 795 W 24.80% -0.260 39.8 kg +50 W, cooler, +0.8 pp
AIKO-A790-GRH78Dw 790 W 24.60% -0.260 39.8 kg +45 W, cooler, +0.6 pp
TSM-NEG21C.20Q-760 760 W 24.50% -0.260 38.3 kg +15 W, cooler, +0.5 pp
AIKO-A785-GRH78Dw 785 W 24.40% -0.260 39.8 kg +40 W, cooler, +0.4 pp
GK-4-78HGBD-780M 780 W 24.30% -0.260 38.7 kg +35 W, cooler, +0.3 pp
AIKO-A780-GRH78Dw 780 W 24.30% -0.260 39.8 kg +35 W, cooler, +0.3 pp
JT755SLk(B) 755 W 24.30% -0.240 36.4 kg Cooler, lighter, +0.3 pp
TSM-NEG21C.20Q-755 755 W 24.30% -0.260 38.3 kg +10 W, cooler, +0.3 pp
725 725 W 23.30% -0.300 39.0 kg -20 W, -0.7 pp
730 730 W 23.50% -0.300 39.0 kg -15 W, -0.5 pp
735 735 W 23.70% -0.300 39.0 kg -10 W, -0.3 pp
740 740 W 23.80% -0.300 39.0 kg Very close match
750 750 W 24.10% -0.300 39.0 kg Very close match
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +60 W, cooler, +1.1 pp

Found 1390 panels of the same or similar size to this one, within ±10 mm. See them here Found 1400 panels of the same or similar size to this one, within ±25 mm. See them here Found 1400 panels of the same or similar size to this one, within ±50 mm. See them here Found 1432 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
How does HJT cell technology in Sunplus Hi-Max panels differ from classic PERC cells?
HJT (heterojunction) cells combine a crystalline silicon layer with thin amorphous silicon layers, reducing thermal losses and improving efficiency at higher temperatures compared to PERC. In practice, Hi-Max panels lose power more slowly on hot days and perform better under variable irradiance, resulting in higher real-world annual energy yield.
Are Sunplus Hi-Max panels suitable for installations with partial shading?
Yes, this is one of the series' main strengths. The half-cut cell architecture combined with Micro Gap Design increases shade tolerance from chimneys, antennas, or trees, limiting the impact of individual cell power drops on the whole module string. As a result, energy production stays more stable even under difficult mounting conditions.
What is the maximum power output of the Hi-Max series and what installations does it suit?
Hi-Max panels reach up to 750 Wp, making them a strong choice for both large commercial rooftop installations and ground-mounted solar farms. High per-module power output reduces the number of panels needed to reach a target system capacity, lowering mounting structure and labor costs.
What is bifacial construction and is it worth paying extra for Hi-Max double-sided panels?
Bifacial construction means the panel generates energy from both the front and rear side, capturing light reflected off the ground surface. In the Hi-Max series this is combined with glass-glass technology, further improving module durability. The extra cost makes sense especially for ground-mount installations over light-colored surfaces or elevated racking, where rear-side gain can reach several percent additional yield.
What is the power warranty on Sunplus Hi-Max panels?
The Hi-Max series comes with a 30-year power warranty, well above the typical industry standard of 25 years. This extended coverage stems from the glass-glass construction, which protects the cells against moisture ingress and degradation better than standard back-sheet panels, resulting in a slower power decline over time.
Are Hi-Max panels resistant to moisture and harsh weather conditions?
Yes, thanks to glass-glass technology the module is sealed on both sides with glass layers instead of a standard rear polymer back-sheet, significantly reducing moisture penetration and protecting the cells from corrosion and micro-cracks. This construction helps the panels better withstand temperature swings, wind, and precipitation, maintaining stable performance throughout their service life.
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