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Vespa Solar Enerji Brand review

VSP445T-M10-120H

445 Wp PERC Bifacial 70%
ComparePV verdict

Warranty pick, no clear weak spot

Rank 10,372 of 14,005
Compare panels Datasheet PDF
Power (Wp)
445
Strong · top 5%
Efficiency (%)
20.56
Typical · median 20.60%
Density (Wp/m²)
205.6
Typical · median 206.2
Temp (%/°C)
-0.340
Strong · top 24%
Weight (kg)
24.0
Typical · median 22.0 kg
Warranty (yrs)
30
Strong · top 17%

The Vespa Solar Enerji VSP-T series is designed for high energy production, even in conditions where module performance is more challenging than in ideal testing scenarios - such as intermittent shading, lower sunlight levels, and greater temperature fluctuations. The use of bifacial technology allows for the utilization of reflected light from the ground, which realistically increases energy yield in ground-mounted and light-surface rooftop installations. Another key feature is the half-cut cell design, which minimizes losses due to micro-shading and improves the stability of the string. Furthermore, the multi-busbar design supports better current transport and reduces the impact of micro-cracks on long-term performance.

In practice, the VSP-T solves common investor problems - it helps to extract more kWh from the same area and maintain consistent performance thanks to triple EL testing and Anti-PID protection. This series is suitable for C&I, PV farm, and energy-cost-focused projects throughout the entire lifecycle.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.56% 20.60% Typical 11,194
Power density 205.6 206.2 Typical 11,166
Temperature coefficient -0.340 -0.350 Strong · top 24% 8,778
Weight per kWp 53.9 53.0 Typical 8,086
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

2 positive · 0 caution
Best for

Commercial, utility-scale and shaded-installations.

Strengths
30 year performance warranty

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

-0.340 %/°C temperature coefficient

Top 24% of the PERC 400-450 W segment, against a median of -0.350.

Notes from the database
  • At 20.6% efficiency, this panel is on par with typical PERC 400-450W modules
  • At 205.6 W/m² power density, roof space requirements are typical for PERC 400-450W panels
  • Temperature coefficient of -0.34%/°C matches the PERC 400-450W median
  • At 24.0 kg (2.0 kg above PERC 400-450W median of 22.0 kg), requires checking roof load capacity
  • Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface

Specifications

Open datasheet PDF
Nominal power (Pmax) 445 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.56 % Typical Segment median 20.60%
Vmpp · Impp 34.63 V · 12.86 A Operating point at max power
Voc · Isc 41.18 V · 13.83 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1909×1134×35 mm · 2.16 m² of roof
Weight 24.0 kg Typical Typical · median 22.0 kg
Cells 120 · PERC Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.340 %/°C Strong top 24% of its segment
Coefficient Voc · Isc -0.260 · 0.050 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Strong top 17% · median 25 yrs
End-of-warranty output 85.0 % Equals 378 W guaranteed
Degradation 2.00 → 0.45 % 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
-
With bifacial gain
-

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

Heat losses
-0.340 %/°C against a segment median of -0.350
-
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
Vespa Solar Enerji VSP445T-M10-120H 445 W 20.56% -0.340 24.0 kg You are here
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +50 W, cooler, +4.2 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +45 W, cooler, +3.9 pp
STP-NT11/48QGSF-490 490 W 24.50% -0.260 21.5 kg +45 W, cooler, +3.9 pp
JAT54S40-485/LR 485 W 24.30% -0.260 19.3 kg Cooler, lighter, +3.7 pp
AIKO-A485-MCE54Mw 485 W 24.30% -0.260 21.0 kg +40 W, cooler, +3.7 pp
LR7-54HJD-495M 495 W 24.30% -0.240 23.5 kg +50 W, cooler, +3.7 pp
AIKO-A485-MAH54Mw 485 W 24.30% -0.260 21.5 kg +40 W, cooler, +3.7 pp
VSP450T-M10-120H 450 W 20.79% -0.340 24.0 kg +0.2 pp
VSP455T-M10-120H 455 W 21.02% -0.340 24.0 kg +10 W, +0.5 pp
VSP460T-M10-120H 460 W 21.25% -0.340 24.0 kg +15 W, +0.7 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +115 W, cooler, +4.2 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +110 W, cooler, +4.0 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +105 W, cooler, +3.8 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +95 W, cooler, +3.8 pp
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +95 W, cooler, +3.8 pp
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg +100 W, cooler, +3.7 pp

Found 746 panels of the same or similar size to this one, within ±10 mm. See them here Found 755 panels of the same or similar size to this one, within ±25 mm. See them here Found 916 panels of the same or similar size to this one, within ±50 mm. See them here Found 1503 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Are Vespa Solar Enerji VSP-T panels suitable for solar farms and ground-mounted installations?
Yes, the VSP-T series is a strong fit for solar farms and ground-mount installations thanks to its bifacial technology, which captures light reflected off the ground, gravel, or light-colored surfaces. This delivers extra energy yield from the rear side of the panel without increasing the installation footprint. Combined with power ratings up to 460 Wp, the series suits C&I projects focused on lowering the lifetime cost of energy.
What warranty comes with VSP-T Series panels and what does it cover?
Vespa Solar Enerji offers a 15-year product warranty covering material and workmanship defects, plus a 30-year power warranty guaranteeing a defined performance level over time. This is close to industry-leading standards, though it's worth noting Vespa is not a tier-1 manufacturer, so for large-volume purchases it's advisable to verify local warranty service and spare-part availability before ordering.
What is bifacial technology in VSP-T panels and does it really boost energy production?
Bifacial technology means the VSP-T panel has active cells on both sides of the module and can generate power from both direct sunlight and light reflected off the ground. In ground-mount installations over light-colored soil or roofs with reflective surfaces, this can realistically add several to over ten percent more yield compared to a standard monofacial panel, without expanding the installed footprint.
How does the half-cut cell layout in VSP-T panels differ from standard full-cell modules?
In half-cut technology, each silicon cell is cut in half, reducing current losses and heat generated within the module. This helps the VSP-T panel cope better with partial shading, such as from a chimney, tree, or passing clouds, since shading on one half-cell has less impact on the whole string. The result is higher and more stable energy output under less-than-ideal sunlight conditions.
Do VSP-T panels perform well on hot roofs during summer?
The VSP-T series uses PERC cells and a multibusbar design that supports better current transport and limits losses from module heating. Additionally, Anti-PID protection guards against potential-induced degradation, which intensifies under high temperature and humidity. In practice this means more predictable energy output even on hot summer days, though like any silicon panel, VSP-T will lose some efficiency above 25°C.
Is Vespa Solar Enerji a well-established manufacturer, and where are VSP-T panels made?
Vespa Solar Enerji is a manufacturer headquartered in Turkey and is not currently classified as tier-1 under Bloomberg NEF's ranking, indicating a smaller production scale and shorter market track record than the largest Asian manufacturers. This does not automatically mean lower quality - the VSP-T series undergoes a triple EL test to check for micro-cracks. Before purchasing, it's worth confirming a local distributor and warranty service terms in your market.
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