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RedSolar Brand review

CETC-705T(GDF)/132

705 Wp TOPCon Bifacial 80%
ComparePV verdict

Middle of its segment, heavy for its output

Rank 1,037 of 14,005
Compare panels Datasheet PDF
Power (Wp)
705
Weak · bottom 22%
Efficiency (%)
22.70
Weak · bottom 23%
Density (Wp/m²)
227.0
Weak · bottom 21%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
38.5
Weak · bottom 7%
Warranty (yrs)
30
Typical · median 30 yrs

The N series G12 TOPCon Bifacial modules are dual-sided solar panels engineered to maximize energy yield while minimizing capital cost per installed watt. The panels use N-type TOPCon cells in a half-cut format (132 pieces, 2x6x11 layout), which reduces resistive losses and improves performance under partial shading conditions. Thanks to bifacial technology and a glass-glass construction, the module captures additional energy from reflected light reaching the rear side of the cells, making it especially beneficial for ground-mount installations and light-colored roofing surfaces. The multi-busbar technology applied improves current collection and increases the reliability of electrical connections. The panels stand out for their PID resistance and very low annual power degradation, ensuring stable energy output throughout the entire service life. The reinforced frame withstands high snow and wind loads, making it suitable for both commercial installations and utility-scale solar farms operating in demanding climate conditions. This is a solution for investors and installers seeking high reliability, a long linear warranty, and predictable return on investment in large-scale projects.

Ranking

420 panels in the segment TOPCon 700-750 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.70% 23.00% Weak · bottom 23% 3,307
Power density 227.0 230.2 Weak · bottom 21% 3,361
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 54.6 52.9 Weak · bottom 7% 8,959
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

5 positive · 5 caution
Best for

Utility-scale and commercial.

Not ideal for

Weight-limited structures, roofs where every square metre has to count and tight roof space.

Watch-outs
54.6 kg per kWp

Bottom 7% of the TOPCon 700-750 W segment, against a median of 52.9. Ranked 8,959th in the whole database.

227.0 watts per square metre

Bottom 21% of the TOPCon 700-750 W segment, against a median of 230.2.

22.70% module efficiency

Bottom 23% of the TOPCon 700-750 W segment, against a median of 23.00%.

What owners get
Efficiency matching segment leaders

Efficiency of 22.5-23.2% matches the top peer comparables in the 700-720W class (DMEGC at 23.2%, Gamko and Renesola at 23.18%), placing the series among the leading G12 TOPCon 132-cell modules on the market.

N-type TOPCon technology with half-cut cells

132 half-cut cells arranged 2x6x11 reduce resistive losses and improve partial-shading performance compared to full-size cells, while N-type TOPCon technology delivers lower LID degradation than legacy PERC solutions.

Bifacial glass-glass construction

The double-sided design captures additional energy from reflected light reaching the rear side of the module, particularly effective in ground-mount installations and on bright surfaces - a typical use case for the utility-scale and commercial projects this series targets.

30-year linear power warranty

The manufacturer offers a 30-year linear power warranty, matching the standard set by leading TOPCon manufacturers and exceeding the 25-year warranties common among some competitors in this segment.

CETC technological backing

RedSolar (Hunan RedSolar New Energy Technology) is incubated by the 48th Research Institute of China Electronics Technology Group Corporation (CETC), giving the series R&D backing from a state-owned technology conglomerate rarely available to smaller module manufacturers.

Trade-offs
No confirmed BNEF Tier 1 status

RedSolar was not found on available BloombergNEF Tier 1 solar module manufacturer lists, unlike some competing brands with a longer market track record. This may matter for bank financing of large commercial projects, the segment this series targets.

Shorter 12-year product warranty

The product warranty covers 12 years, while some premium TOPCon manufacturers in this power class (700-720W) offer 15 years against material and workmanship defects, which may warrant additional service-risk analysis given the 30-year system lifespan.

Notes from the database
  • At 22.7% efficiency, this panel is on par with typical TOPCon 700-750W modules
  • Power density of 226.9 W/m² is 3.2 W/m² below TOPCon 700-750W median (230.2 W/m²) - needs more roof space
  • Temperature coefficient of -0.29%/°C matches the TOPCon 700-750W median
  • Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
  • Ranked #3307 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 705 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.70 % Weak Segment median 23.00%
Vmpp · Impp 40.66 V · 17.34 A Operating point at max power
Voc · Isc 48.69 V · 18.16 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2384×1303×33 mm · 3.11 m² of roof
Weight 38.5 kg Weak Weak · bottom 7%
Cells 132 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.045 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 616 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by RedSolar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 705 Wp appear here. The rest cover the whole series.

P-V Curves of PV Module P-V Curves of PV Module 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
-0.290 %/°C against a segment median of -0.290
-
Bifacial gain
Rear gain over light concrete: -
-

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

Alternatives

All RedSolar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
RedSolar CETC-705T(GDF)/132 705 W 22.70% -0.290 38.5 kg You are here
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +2.5 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg -30 W, lighter, +2.3 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg Cooler, lighter, +2.3 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg Cooler, lighter, +2.2 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg -35 W, lighter, +2.1 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg -35 W, lighter, +2.1 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg -35 W, lighter, +2.1 pp
CETC-690T(GDF)/132 690 W 22.21% -0.310 38.0 kg -15 W, hotter, -0.5 pp
CETC-695T(GDF)/132 695 W 22.37% -0.310 38.0 kg -10 W, hotter, -0.3 pp
CETC-700T(GDF)/132 700 W 22.50% -0.290 38.5 kg Very close match
CETC-710T(GDF)/132 710 W 22.90% -0.290 38.5 kg Very close match
CETC-715T(GDF)/132 715 W 23.00% -0.290 38.5 kg +10 W, +0.3 pp
CETC-720T(GDF)/132 720 W 23.20% -0.290 38.5 kg +15 W, +0.5 pp
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +100 W, cooler, +2.4 pp
AIKO-A800-GRH78Dw 800 W 24.90% -0.260 39.8 kg +95 W, cooler, +2.2 pp
AIKO-A795-GRH78Dw 795 W 24.80% -0.260 39.8 kg +90 W, cooler, +2.1 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 the RedSolar N series G12 TOPCon Bifacial CETC-700-720T differ from standard PERC panels?
N-type TOPCon cells have lower current losses and a lower annual power degradation rate than classic PERC cells. In addition, the bifacial design allows the module to generate energy from its rear side using reflected light, increasing energy yield per installed area, especially over bright ground or in ground-mounted installations.
What warranty comes with the RedSolar N series G12 TOPCon Bifacial CETC-700-720T panels?
The manufacturer provides a 12-year product warranty and a 30-year linear power output warranty. This means the panel maintains a guaranteed, predictable energy output level over three decades, making it easier to plan return on investment for commercial projects and solar farms.
Are bifacial panels from this series suitable for roof installations or only ground-mount systems?
Bifacial technology performs best over bright, reflective surfaces, so it's most commonly used in ground-mount installations, solar farms, and flat roofs with light-colored coverings. On typical pitched roofs with dark shingles, the extra rear-side gain will be limited, but the panel still functions correctly as a standard monofacial module.
How many cells does the CETC-700-720T(GDF)/132 module have, and how does this affect partial shading performance?
The module uses 132 N-type TOPCon half-cut cells arranged in a 2x6x11 configuration. Splitting cells into halves reduces power losses under partial shading, such as from leaves, a chimney, or a neighboring building, since shading half the module has a smaller impact on overall panel performance.
Are RedSolar TOPCon Bifacial panels resistant to PID degradation?
Yes, the N series G12 TOPCon Bifacial line features high resistance to PID (Potential Induced Degradation), the power loss caused by voltage potential differences within an installation. This ensures stable performance throughout the panel's service life, even in large installations with high system voltage.
What is the maximum power output of the RedSolar N series panel, and what installations is it suited for?
The module reaches up to 720 Wp of maximum power. Combined with bifacial technology and a reinforced frame rated for high snow and wind loads, it's well suited to large commercial installations and solar farms, where high per-unit power and lower cost per watt installed matter most.
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