Risen Brand review

Risen RSM132-8-670BHDG

670 Wp HJT Bifacial 85%

71 of 100

ComparePV verdict

Light for its output, modest efficiency

Rank 1,979 of 14,129

Compare panels Datasheet PDF

Power (Wp)

670

Weak · bottom 13%

Efficiency (%)

21.60

Weak · bottom 9%

Density (Wp/m²)

215.7

Weak · bottom 11%

Temp (%/°C)

-0.240

Typical · median -0.240

Weight (kg)

35.0

Strong · 3.5 kg below median

Warranty (yrs)

Typical · median 30 yrs

The Risen TITAN RSM132-8-BHDG series is a range of advanced bifacial modules that set a new direction in energy yield optimization through the use of bifacial dual glass technology. The use of large silicon cells combined with a half-cut design allows for a radical reduction in internal resistance and improved efficiency in difficult lighting conditions. A key innovation is multi-busbar (MBB) technology, which not only increases light absorption but also minimizes the risk of micro-cracks, directly translating into decades of failure-free operation. This series addresses the problem of module degradation over time, offering exceptional resistance to the PID phenomenon and the highest mechanical durability thanks to double-sided tempered glass. A low temperature coefficient ensures that the panels maintain high performance even during summer heat, outperforming standard monofacial solutions. This product is dedicated to investors building solar farms and large-scale commercial installations where the priority is the lowest levelized cost of energy (LCOE). Excellent performance in low sunlight and high mechanical resistance guarantee stable yields in the Polish climate, making this series one of the most cost-effective choices on the professional market.

Ranking

61 panels in the segment HJT 650-700 W

Metric This panel Median Position in segment Overall rank

Module efficiency 21.60% 22.20% Weak · bottom 9% 7,716

Power density 215.7 222.1 Weak · bottom 11% 7,708

Temperature coefficient -0.240 -0.240 Typical 13

Weight per kWp 52.2 55.7 Strong · top 16% 5,750

Performance warranty 30 yrs 30 yrs Typical 21

Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

1 positive · 2 caution

Best for

Utility-scale, commercial, shaded-installations and hot-climate.

Not ideal for

Tight roof space and roofs where every square metre has to count.

Strengths

52.2 kg per kWp

Top 16% of the HJT 650-700 W segment, against a median of 55.7.

Watch-outs

21.60% module efficiency

Bottom 9% of the HJT 650-700 W segment, against a median of 22.20%. Ranked 7,716th in the whole database.

215.7 watts per square metre

Bottom 11% of the HJT 650-700 W segment, against a median of 222.1.

Notes from the database

At 21.6% efficiency, this panel is 0.6pp below the HJT 650-700W median of 22.2%
Power density of 215.7 W/m² is 6.4 W/m² below HJT 650-700W median (222.1 W/m²) - needs more roof space
At -0.24%/°C, hot weather performance is typical for HJT 650-700W panels
At 35.0 kg, this panel is 3.5 kg lighter than HJT 650-700W median (38.5 kg) - easier handling during installation
85% bifaciality enables rear-side power generation, boosting yield by 4-13% on reflective surfaces

Specifications

Open datasheet PDF

Nominal power (Pmax) 670 Wp Nameplate at 1000 W/m², 25 °C

Module efficiency 21.60 % Weak Segment median 22.20%

Vmpp · Impp 41.33 V · 16.23 A Operating point at max power

Voc · Isc 49.29 V · 17.31 A Sizes the string length

Max system voltage 1500 V Longer strings than 1000 V modules

Dimensions 2384×1303×30 mm · 3.11 m² of roof

Weight 35.0 kg Strong Strong · 3.5 kg below median

Cells 132 · HJT Monocrystalline

Bifaciality 85 % Rear output as a share of front

Coefficient Pmax -0.240 %/°C Typical median -0.240 of its segment

Coefficient Voc · Isc -0.220 · 0.047 %/°C

NOCT 43 °C At 800 W/m², 20 °C ambient

Product warranty 15 years Hardware defects only

Performance warranty 30 years Typical median 30 yrs · median 30 yrs

End-of-warranty output 90.3 % Equals 605 W guaranteed

Degradation 1.00 → 0.30 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Risen in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 670 Wp appear here. The rest cover the whole series.

I-V characteristics at different temperatures (AM1.5, 1000 W/m²) 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

Irradiance Energy price Price inflation 0%/yr

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

Heat losses

-0.240 %/°C against a segment median of -0.240

Try your own cell temperature (°C) 60° · - · -

Bifacial gain

Rear gain over light concrete: -

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

Alternatives

All Risen panels See 12 Risen offers

Filter these Similar power Same cell type Same manufacturer

Size Any ±10 mm ±25 mm ±50 mm ±100 mm

Panel Power Eff. Temp. Weight Difference

Risen RSM132-8-670BHDG 670 W 21.60% -0.240 35.0 kg You are here

AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg Hotter, lighter, +3.6 pp

AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Hotter, lighter, +3.6 pp

AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Hotter, lighter, +3.4 pp

AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg -25 W, lighter, +3.4 pp

AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +30 W, hotter, +3.4 pp

WST-675BKX72-A2 675 W 25.00% -0.260 32.1 kg Hotter, lighter, +3.4 pp

AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +25 W, hotter, +3.3 pp

AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Hotter, lighter, +3.2 pp

RSM132-8-650BMDG 650 W 20.90% -0.340 38.3 kg Hotter, heavier, -0.7 pp

RSM132-8-655M 655 W 21.10% -0.340 33.5 kg Hotter, -0.5 pp, -5 yr warranty

RSM132-8-660BMDG 660 W 21.20% -0.340 38.3 kg Hotter, heavier, -0.4 pp

RSM132-8-665BMDG 665 W 21.40% -0.340 38.3 kg Hotter, heavier, -0.2 pp

AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +135 W, heavier, +3.5 pp

AIKO-A800-GRH78Dw 800 W 24.90% -0.260 39.8 kg +130 W, heavier, +3.3 pp

AIKO-A795-GRH78Dw 795 W 24.80% -0.260 39.8 kg +125 W, heavier, +3.2 pp

AIKO-A790-GRH78Dw 790 W 24.60% -0.260 39.8 kg +120 W, heavier, +3.0 pp

Found 1393 panels of the same or similar size to this one, within ±10 mm. See them here Found 1403 panels of the same or similar size to this one, within ±25 mm. See them here Found 1403 panels of the same or similar size to this one, within ±50 mm. See them here Found 1435 panels of the same or similar size to this one, within ±100 mm. See them here

About the TITAN RSM132-8-BHDG series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

What warranty does Risen offer for the TITAN RSM132-8-BHDG series?

Risen provides a 15-year product warranty and a 30-year linear power output warranty for the TITAN RSM132-8-BHDG series. The power warranty guarantees a minimum of 80% of rated output throughout the full 30 years of operation. This is one of the longer warranty standards available for large-format modules and reflects the manufacturer's confidence in the HJT bifacial dual glass construction.

What is HJT technology and what advantages does it offer in the RSM132-8-BHDG series?

HJT (Heterojunction Technology) combines N-type crystalline silicon with thin amorphous silicon layers, achieving module efficiency of approximately 22.5-23% in the RSM132-8-BHDG series. Its standout advantage is an exceptionally low temperature coefficient of -0.24%/°C, meaning the panel loses far less power during hot summer days compared to standard PERC modules, resulting in measurably higher annual energy yields.

Is the Risen TITAN RSM132-8-BHDG suitable for utility-scale solar farm projects?

Yes, the RSM132-8-BHDG series is specifically engineered for large-scale and utility-scale PV plants. At up to 730 Wp per module, fewer units are needed per string, reducing Balance of System (BoS) costs and wiring complexity. The bifacial design harvests ground-reflected albedo radiation, adding 10-25% in annual yield and further lowering the plant's overall LCOE.

How does the bifacial design of the RSM132-8-BHDG boost energy production?

The bifacial RSM132-8-BHDG modules harvest irradiance from both the front and rear sides by utilizing albedo radiation reflected from the ground. With a bifaciality factor of approximately 85%, rear-side gains typically range from 10 to 25% annually, depending on ground albedo and tilt angle. The effect is most pronounced over high-reflectivity surfaces such as light gravel, concrete, or snow-covered ground.

Does the RSM132-8-BHDG perform well in low-light conditions and the Central European climate?

Yes, the HJT cells used in the RSM132-8-BHDG series deliver excellent low-irradiance performance, which is highly relevant in Poland's frequently overcast climate. The low temperature coefficient of -0.24%/°C minimizes power losses during summer heat peaks. The dual glass encapsulation provides superior resistance to moisture, frost, and mechanical loads, making this series a reliable choice for Central European weather conditions year-round.

How large are the Risen TITAN RSM132-8-BHDG panels and do they require a special mounting structure?

RSM132-8-BHDG modules measure approximately 2384 × 1303 mm. The dual glass construction makes them heavier than standard single-glass modules, so the racking system must be selected based on load ratings and clamp spacing suited for large-format dual glass panels. Risen recommends this series primarily for ground-mounted utility-scale installations and large commercial rooftops with professional-grade mounting structures.

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