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CW Enerji Brand review

CWT445-144MB

445 Wp PERC
ComparePV verdict

Warranty pick, weak in heat

Rank 10,862 of 14,005
Compare panels Datasheet PDF
Power (Wp)
445
Strong · top 5%
Efficiency (%)
20.40
Typical · median 20.60%
Density (Wp/m²)
204.4
Typical · median 206.2
Temp (%/°C)
-0.360
Weak · bottom 15%
Weight (kg)
24.5
Typical · median 22.0 kg
Warranty (yrs)
30
Strong · top 17%

The CW Enerji 144MB series consists of monocrystalline PERC modules manufactured using the Half-Cut technology, which combines cut cells with a modern 9-Bus (9BB) system. This combination minimizes resistive losses and increases resistance to partial shading - when one part of the panel is in shadow, the remaining part continues to operate without interruption. The glass with self-cleaning and anti-reflective coatings reduces the accumulation of dirt and improves light absorption, which translates into better performance in cloudy, early morning, and late afternoon conditions. The series is suitable for both residential and commercial installations - wherever reliable, long-term energy production is a priority. The robust design can withstand wind loads up to 2400 Pa and snow loads up to 5400 Pa, and the IP67/IP68 rated junction box ensures a watertight seal in any weather conditions. The positive power tolerance guarantees that each panel achieves at least the declared parameters. Compliance with IEC 61215, IEC 61730 standards, and PID, salt spray, and ammonia resistance certifications confirms the suitability of these modules in demanding environments. The manufacturer offers a 30-year performance warranty and a 12-year product warranty.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.40% 20.60% Typical 11,598
Power density 204.4 206.2 Typical 11,529
Temperature coefficient -0.360 -0.350 Weak · bottom 15% 12,345
Weight per kWp 55.1 53.0 Typical 9,435
Performance warranty 30 yrs 25 yrs Strong · top 17% 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 4 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Hot climates.

Strengths
30 year performance warranty

Top 17% of the PERC 400-450 W segment, against a median of 25 yrs.

Watch-outs
-0.360 %/°C temperature coefficient

Bottom 15% of the PERC 400-450 W segment, against a median of -0.350.

What owners get
Half-Cut + 9-Busbar Design Minimizes Losses

The combination of half-cut cells and 9 busbars reduces series resistance and limits the impact of partial shading — when one half of the module is shaded, the other continues to operate without interruption. This translates into a measurable gain in annual energy yield for typical rooftop installations affected by shading obstacles.

30-Year Linear Power Warranty

The manufacturer provides a 30-year linear power output warranty — on par with leading Tier-1 series from Jinko and JA Solar. This is a compelling factor in LCOE calculations for both residential prosumer and commercial-scale installations.

High Mechanical Strength and IP68 Rating

The frame withstands snow loads of 5,400 Pa and wind loads of 2,400 Pa, exceeding the requirements for Polish climatic zones (normative snow load up to ~1.8 kN/m² in Zones I–III). The IP67/IP68-rated junction box ensures a watertight seal even under prolonged submersion.

Anti-Soiling + Anti-Reflective Dual Coating

The dual-layer glass coating improves light absorption at low angles of incidence (dawn, dusk, overcast conditions) and reduces soiling-related losses — particularly beneficial for installations where cleaning access is limited.

Positive Power Tolerance 0/+5 W

Every panel is guaranteed to deliver at least its rated nominal power, eliminating the risk of underperformance in system design and enabling precise inverter sizing without safety power buffers.

Trade-offs
Series Discontinued

The 144MB series has been discontinued. This limits the availability of replacement modules in the event of a failure or system expansion, and manufacturer service support for end-of-life product lines is typically phased out over time. CW Enerji has itself transitioned production to its newer G12R TOPCon series.

PERC Technology — Advancing Obsolescence

PERC is steadily losing market share to TOPCon: from 63% of global production in 2023 to approximately 43% in 2024, with a further projected decline at a CAGR of –10.8% through 2030. TOPCon offers a lower LID degradation rate and superior temperature coefficient performance — structural advantages that PERC cannot match.

Efficiency Below Peer Comparables

The series reaches a maximum efficiency of 21.36%, while the directly comparable DAH DHN-54R18/DG(BW) — the same 465 W power class — achieves 22.78% through N-type TOPCon and bifacial technology. The 1.42 percentage-point gap translates to approximately 6.6% less energy from an identical roof area, a significant drawback in space-constrained installations.

Notes from the database
  • Efficiency of 20.4% matches the PERC 400-450W median
  • Power density of 204.4 W/m² matches the PERC 400-450W median
  • At -0.36%/°C, hot weather performance is typical for PERC 400-450W panels
  • At 24.5 kg, this panel is 2.5 kg heavier than the PERC 400-450W median (22.0 kg) - more demanding for installation crews
  • In the top 83% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 445 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.40 % Typical Segment median 20.60%
Vmpp · Impp 41.20 V · 10.81 A Operating point at max power
Voc · Isc 49.00 V · 11.54 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2095×1039×40 mm · 2.18 m² of roof
Weight 24.5 kg Typical Typical · median 22.0 kg
Cells 144 · PERC Monocrystalline
Coefficient Pmax -0.360 %/°C Weak bottom 15% of its segment
Coefficient Voc · Isc -0.304 · 0.050 %/°C
Product warranty 12 years Hardware defects only
Performance warranty 30 years Strong top 17% · median 25 yrs
End-of-warranty output 80.0 % Equals 356 W guaranteed
Degradation 2.50 → 0.60 % First year, then annual

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
-

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

Heat losses
-0.360 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
CW Enerji CWT445-144MB 445 W 20.40% -0.360 24.5 kg You are here
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +50 W, cooler, +4.4 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +45 W, cooler, +4.1 pp
STP-NT11/48QGSF-490 490 W 24.50% -0.260 21.5 kg +45 W, cooler, +4.1 pp
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg Cooler, lighter, +3.9 pp
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg +40 W, cooler, +3.9 pp
LR7-54HJD-495M 495 W 24.30% -0.240 23.5 kg +50 W, cooler, +3.9 pp
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg +40 W, cooler, +3.9 pp
CWT420-144MB 420 W 19.30% -0.360 24.5 kg -25 W, -1.1 pp
CWT425-144MB 425 W 19.52% -0.360 24.5 kg -20 W, -0.9 pp
CWT430-144MB 430 W 19.75% -0.360 24.5 kg -15 W, -0.6 pp
CWT435-144MB 435 W 20.00% -0.360 24.5 kg -10 W, -0.4 pp
CWT440-144MB 440 W 20.20% -0.360 24.5 kg Very close match
CWT450-144MB 450 W 20.70% -0.360 24.5 kg +0.3 pp
CWT455-144MB 455 W 20.90% -0.360 24.5 kg +10 W, +0.5 pp
CWT460-144MB 460 W 21.13% -0.360 24.5 kg +15 W, +0.7 pp
CWT465-144MB 465 W 21.36% -0.360 24.5 kg +20 W, +1.0 pp
GKA120N-PRO-590W 590 W 23.82% -0.300 26.7 kg +145 W, cooler, +3.4 pp

Found 234 panels of the same or similar size to this one, within ±10 mm. See them here Found 325 panels of the same or similar size to this one, within ±25 mm. See them here Found 352 panels of the same or similar size to this one, within ±50 mm. See them here Found 1068 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the CW Enerji 144MB series still available for purchase?
The CW Enerji 144MB series has been discontinued. This means the manufacturer has ceased production, and availability is severely limited — it can only be found as remaining stock held by select distributors. If you require similar technical specifications, it is worth exploring newer CW Enerji series or comparable offerings from other PERC Half-Cut module manufacturers.
What warranty is provided for CW Enerji 144MB photovoltaic panels?
The manufacturer offers a 12-year product warranty covering material and workmanship defects, along with a 30-year performance warranty guaranteeing that the modules maintain a specified power output level over three decades of operation. This is one of the longest performance warranties available in the PERC module market. However, since the series has been discontinued, it is essential to confirm with your distributor whether the warranty remains honored before completing a purchase.
What is Half-Cut technology with 9BB, and why is it advantageous in the 144MB series?
Half-Cut means that each PERC cell is laser-cut in half, which reduces current intensity and lowers resistive losses — resulting in higher power output and improved tolerance to partial shading. Nine busbars (9BB) shorten the current path and reduce the risk of microcracks in the cells during transportation and long-term operation. Together, both technologies deliver measurably higher annual energy yield compared to older, conventional full-cell modules.
What is the maximum power output of the CW Enerji 144MB panels, and does the manufacturer guarantee it will be met?
The highest-rated model in the CW Enerji 144MB series delivers a peak power output of 465 Wp. The manufacturer applies a positive power tolerance, meaning every panel achieves at least the declared 465 W in flash testing — never less. This is particularly important during system design: a reliable energy balance must be built on guaranteed, not inflated, parameters.
Can CW Enerji 144MB panels handle shading from a chimney or antenna?
Yes. Half-Cut technology divides the panel into two independent electrical sections — when one section is shaded by, for example, a chimney, antenna, or ventilation batten, the other continues to operate without interruption. The nine busbars further limit the impact of damage to individual cells on the overall module performance. Additionally, the anti-reflective coated glass improves energy harvesting under diffuse light conditions at dawn and dusk.
Are CW Enerji 144MB panels suitable for installation in harsh weather or coastal environments?
Yes. The module structure withstands wind loads of up to 2400 Pa and snow loads of up to 5400 Pa, meeting the installation requirements for even mountainous and coastal locations. The IP67/IP68-rated junction box ensures a watertight seal under prolonged water exposure. Salt mist and ammonia resistance certifications confirm the suitability of these panels for industrial and coastal environments.
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