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Powitt Solar Brand review

PW-66M690HG12-BD

690 Wp N-type Bifacial 1000%
ComparePV verdict

Middle of its segment, heavy for its output

Rank 1,271 of 14,005
Compare panels Datasheet PDF
Power (Wp)
690
Strong · top 14%
Efficiency (%)
22.21
Typical · median 23.30%
Density (Wp/m²)
222.1
Typical · median 233.2
Temp (%/°C)
-0.300
Weak · bottom 21%
Weight (kg)
37.9
Weak · 4.4 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The Powitt Solar G12 MONO MODULE N-TYPE series is an advanced solution based on N-type silicon cells that redefine efficiency standards in modern photovoltaics. Thanks to the use of wafers with an impressive 210 mm size, these modules offer significantly higher power density, which translates into real savings during installation and a smaller number of required structural components. Innovative SMBB technology (Super Multi-Busbar) effectively reduces resistive losses and minimizes the risk of micro-cracks, ensuring stable operation for decades. A key advantage of this series is minimal light-induced degradation, which allows maintaining high energy efficiency even after many years of intensive use. These panels are an ideal choice for investors seeking maximum yield from limited roof or ground space, especially in demanding conditions with lower sunlight. The G12 series stands out from the competition with an excellent temperature coefficient, guaranteeing efficiency on hot days when traditional modules lose power. This is a professional solution for industrial projects and demanding residential installations where the priority is the lowest cost of energy (LCOE) and the highest technological reliability.

Ranking

109 panels in the segment N-type 650-700 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.21% 23.30% Typical 5,754
Power density 222.1 233.2 Typical 5,734
Temperature coefficient -0.300 -0.290 Weak · bottom 21% 6,093
Weight per kWp 54.9 50.9 Weak · bottom 17% 9,309
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

4 positive · 5 caution
Best for

Utility-scale, commercial and hot-climate.

Not ideal for

Weight-limited structures and hot climates.

Watch-outs
54.9 kg per kWp

Bottom 17% of the N-type 650-700 W segment, against a median of 50.9.

-0.300 %/°C temperature coefficient

Bottom 21% of the N-type 650-700 W segment, against a median of -0.290.

What owners get
N-type TOPCon cells with SMBB technology

N-type cells combined with Super Multi-Busbar reduce resistive losses and microcrack risk, resulting in lower LID degradation than legacy PERC modules and more stable performance over the 30-year linear power warranty.

Efficiency at the top of the segment

Peak efficiency of 23.18% is essentially on par with leading peer comparables - DMEGC (23.2%) and GCL (23.2%) - and matches Leapton (23.18%), placing the series among the top-performing G12 N-type modules on the market.

Bifacial dual-glass design

The bifacial construction enables additional rear-side energy yield, which is particularly advantageous for ground-mount installations, carports, or roof surfaces with high-albedo backgrounds.

High unit power from G12 (210 mm) wafers

Power output up to 720 Wp per module reduces the number of panels needed to reach a given system size, lowering BoS costs for racking, cabling, and installation labor.

Trade-offs
Discontinued production

Released in 2022, this series has been discontinued, limiting availability for replacements in existing installations and potentially complicating warranty service and spare parts access going forward.

No BNEF Tier-1 status

Powitt Solar does not appear on the BNEF Tier-1 manufacturer list, unlike some competitors in the bankable-supplier segment. This may complicate access to bank financing for institutional or debt-financed projects.

Shorter product warranty than N-type leaders

The 15-year product warranty reflects an older-generation standard, while leading N-type manufacturers (e.g., LONGi, Trina Vertex N) now offer 25-year product warranties alongside the same 30-year power warranty.

Notes from the database
  • At 22.2% efficiency, this panel is 1.1pp below the N-type 650-700W median of 23.3%
  • Power density of 222.1 W/m² is 11.1 W/m² below N-type 650-700W median (233.2 W/m²) - needs more roof space
  • Temperature coefficient of -0.30%/°C matches the N-type 650-700W median
  • At 37.9 kg (4.4 kg above N-type 650-700W median of 33.5 kg), requires checking roof load capacity
  • In the top 41% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 690 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.21 % Typical Segment median 23.30%
Vmpp · Impp 40.10 V · 17.23 A Operating point at max power
Voc · Isc 48.04 V · 18.26 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 37.9 kg Weak Weak · 4.4 kg above median
Cells 132 · N-type Monocrystalline
Bifaciality 1000 % Rear output as a share of front
Coefficient Pmax -0.300 %/°C Weak bottom 21% of its segment
Coefficient Voc · Isc -0.250 · 0.046 %/°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 87.4 % Equals 603 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Powitt Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 690 Wp appear here. The rest cover the whole series.

Linear Performance Warranty Linear 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 -0.290
-
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
Powitt Solar PW-66M690HG12-BD 690 W 22.21% -0.300 37.9 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg -40 W, lighter, +3.0 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +3.0 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, lighter, +2.8 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg -45 W, lighter, +2.8 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg Cooler, lighter, +2.8 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg Cooler, lighter, +2.7 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg Cooler, lighter, +2.6 pp
PW-66M695HG12-BD 695 W 22.37% -0.300 37.9 kg Very close match
PW-66M700HG12-BD 700 W 22.53% -0.300 37.9 kg +10 W, +0.3 pp
PW-66M705HG12-BD 705 W 22.69% -0.300 37.9 kg +15 W, +0.5 pp
PW-66M710HG12-BD 710 W 22.86% -0.300 37.9 kg +20 W, +0.6 pp
PW-66M715HG12-BD 715 W 23.02% -0.300 37.9 kg +25 W, +0.8 pp
PW-66M720HG12-BD 720 W 23.18% -0.300 37.9 kg +30 W, +1.0 pp
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +115 W, cooler, +2.9 pp
AIKO-A800-GRH78Dw 800 W 24.90% -0.260 39.8 kg +110 W, cooler, +2.7 pp
AIKO-A795-GRH78Dw 795 W 24.80% -0.260 39.8 kg +105 W, cooler, +2.6 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
Is the Powitt Solar G12 MONO MODULE N-TYPE series still available for purchase?
The Powitt Solar G12 MONO MODULE N-TYPE series has been discontinued and is no longer actively offered by the manufacturer. If you need similar performance — N-type technology with 210 mm wafers — contact your distributor about currently available alternatives or newer Powitt Solar series with comparable power output and specifications.
What does the bifacial design offer in the Powitt Solar G12 N-TYPE panels, and how much extra energy can you expect?
The bifacial G12 N-TYPE module generates power not only from the front side but also from reflected irradiance off the ground (albedo). In ground-mount or light-colored rooftop installations, the rear-side gain is typically 5–15% above the rated 720 Wp output. Actual yield depends on tilt angle, mounting height above ground, and ground surface reflectivity.
What warranty covers the Powitt Solar G12 MONO MODULE N-TYPE panels?
The manufacturer provides a 15-year product warranty covering mechanical defects and workmanship, plus a 30-year linear power output warranty. Over three decades, the panel should retain at least the minimum power percentage specified in the datasheet. This is among the longer warranty standards available for modules in this class, making it especially attractive for projects with long investment return horizons.
Why are N-type cells in the G12 series better than common P-type PERC?
The N-type cells used in the G12 MONO MODULE series show significantly lower light-induced degradation (LID) compared to P-type PERC cells, meaning the panel loses minimal power during the first weeks of operation. N-type also achieves a better temperature coefficient (approximately −0.30%/°C), resulting in noticeably higher energy production on hot summer days when conventional modules lose efficiency more sharply.
Does the large 720 Wp G12 module fit standard inverters and rooftop racking systems?
G12 modules at 720 Wp, based on 210 mm wafers, are significantly larger and heavier than typical 400–500 Wp panels. Before purchasing, verify that your chosen inverter — particularly its MPPT voltage range — supports the higher Voc resulting from stringing these large modules. Your system designer should also confirm that the roof structure can handle their physical dimensions and weight.
What is SMBB technology in the Powitt Solar G12 panels and does it affect long-term durability?
SMBB (Super Multi-Busbar) replaces a few thick busbars with a dozen or more thin current-collecting wires across the cell surface. This distributes mechanical stress more evenly, significantly reducing the risk of microcracks during transport and thermal cycling. The result is lower annual power degradation and better operational stability throughout the entire period covered by the 30-year power warranty.
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