Skip to main content
Top Solar Brand review

TS-EFS150M

150 Wp Back Contact
ComparePV verdict

Light for its output, weak in heat

Rank 13,716 of 14,005
Compare panels Datasheet PDF
Power (Wp)
150
Typical for its class
Efficiency (%)
18.60
Strong · top 20%
Density (Wp/m²)
153.3
Typical · median 159.2
Temp (%/°C)
-0.420
Weak · bottom 5%
Weight (kg)
2.6
Strong · 8.9 kg below median
Warranty (yrs)
-
Not published

The Top Solar TS-EFS panel series is based on innovative shingled technology, which revolutionizes the way silicon cells are connected. Thanks to the dense arrangement of overlapping silicon layers, these modules eliminate traditional busbars, which significantly increases the active area of the panel and minimizes energy losses. This solution effectively reduces the problem of point thermal stresses, which translates into exceptional resistance to micro-cracks and a significantly longer lifespan of the entire installation. These panels are an ideal choice for investors seeking maximum efficiency from a limited roof area, while offering excellent full black aesthetics that blend perfectly with modern architecture. The special design ensures better performance in partial shading and low light conditions, which is crucial in the Polish climate for maintaining a stable energy yield throughout the year. The TS-EFS series stands out from the competition with its low temperature coefficient, which guarantees high efficiency even on hot days. This solution is dedicated to both demanding home users and companies focusing on reliability and a quick return on investment in renewable energy sources.

Ranking

338 panels in the 50-250 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 18.60% 15.96% Strong · top 20% 13,087
Power density 153.3 159.2 Typical 13,733
Temperature coefficient -0.420 -0.370 Weak · bottom 5% 13,796
Weight per kWp 17.3 70.3 Strong · top 2% 54
Performance warranty - 25 yrs Not published 13,880
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

2 positive · 1 caution
Best for

Residential, commercial, shaded-installations and hot-climate.

Not ideal for

Hot climates.

Strengths
17.3 kg per kWp

Top 2% of the 50-250 W band, against a median of 70.3. Ranked 54th in the whole database.

18.60% module efficiency

Top 20% of the 50-250 W band, against a median of 15.96%.

Watch-outs
-0.420 %/°C temperature coefficient

Bottom 5% of the 50-250 W band, against a median of -0.370. Ranked 13,796th in the whole database.

Notes from the database
  • Efficiency of 18.6% is 2.6pp below the Back Contact 0-400W median (21.2%)
  • 153.3 W/m² power density is 58.8 W/m² below Back Contact 0-400W median (212.1 W/m²) - requires larger installation area
  • Temperature coefficient of -0.42%/°C is 0.15pp worse than Back Contact 0-400W median (-0.27%/°C) - higher losses in summer heat
  • 2.6 kg weight - 16.4 kg lighter than Back Contact 0-400W median (19.0 kg), reducing installation effort
  • #13087 for efficiency, #13796 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 150 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 18.60 % Strong Segment median 15.96%
Vmpp · Impp 19.51 V · 7.69 A Operating point at max power
Voc · Isc 23.83 V · 8.16 A Sizes the string length
Max system voltage 600 V Longer strings than 1000 V modules
Dimensions 1460×670×3 mm · 0.98 m² of roof
Weight 2.6 kg Strong Strong · 8.9 kg below median
Cells 36 · Back Contact Monocrystalline
Coefficient Pmax -0.420 %/°C Weak bottom 5% of its segment
Coefficient Voc · Isc -0.320 · 0.040 %/°C

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
-0.420 %/°C against a segment median of -0.370
-

Alternatives

All Top Solar panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Top Solar TS-EFS150M 150 W 18.60% -0.420 2.6 kg You are here
GKA182M150W 150 W 23.00% - 9.0 kg Heavier, +4.4 pp
GKA182M160W 160 W 23.00% - 9.0 kg +10 W, heavier, +4.4 pp
GKA182M180W 180 W 23.00% - 9.0 kg +30 W, heavier, +4.4 pp
GKA182M200W 200 W 23.00% - 9.0 kg +50 W, heavier, +4.4 pp
GKA182M120W 120 W 23.00% - 6.1 kg -30 W, heavier, +4.4 pp
GKA182M135W 135 W 23.00% - 6.1 kg -15 W, heavier, +4.4 pp
GKA182M100W 100 W 23.00% - 6.1 kg -50 W, heavier, +4.4 pp
GKA182M110W 110 W 23.00% - 6.1 kg -40 W, heavier, +4.4 pp
NS-100MH-36 100 W 21.29% -0.290 5.0 kg -50 W, cooler, +2.7 pp
NS-100MH-36 100 W 21.29% -0.290 5.0 kg -50 W, cooler, +2.7 pp
ZEUS 1.2 FullBlack 280W 280 W 23.31% -0.260 14.3 kg +130 W, cooler, +4.7 pp
GKA182M285W 285 W 23.00% - 10.8 kg +135 W, heavier, +4.4 pp
GKA182M240W 240 W 23.00% - 10.8 kg +90 W, heavier, +4.4 pp
GKA182M260W 260 W 23.00% - 10.8 kg +110 W, heavier, +4.4 pp
GKA182M270W 270 W 23.00% - 10.8 kg +120 W, heavier, +4.4 pp
DM270M10T-B32HBT 270 W 22.90% -0.290 15.3 kg Cooler, heavier, +4.3 pp

Found 2 panels of the same or similar size to this one, within ±10 mm. See them here Found 43 panels of the same or similar size to this one, within ±25 mm. See them here Found 94 panels of the same or similar size to this one, within ±50 mm. See them here Found 129 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Can the Top Solar TS-EFS150 panel be mounted on a curved surface, such as a camper van or boat roof?
Yes, the TS-EFS150 series is a flexible ETFE panel that can be bent to the curve radius typical of camper van roofs, boats, or caravans. The flexible construction combined with shingled cell technology and Back Contact cells maintains high efficiency even when installed on a curved surface, without the crack risk typical of rigid glass modules.
How does the shingled technology used in the TS-EFS series differ from conventional busbar-connected panels?
In conventional panels, cells are connected with visible busbars, which reduces the active surface area and creates stress points prone to microcracks. In the TS-EFS series, thin silicon strips overlap like roof shingles, eliminating busbars entirely. This gives the panel a larger active area, lower energy losses, and higher resistance to thermal stress, resulting in a longer module lifespan.
Do the Back Contact cells in the TS-EFS150 deliver noticeably higher efficiency than standard monocrystalline panels?
Yes, Back Contact cells move all electrical contacts to the rear side, so the front surface isn't shaded by metal grid lines. This allows more effective light absorption and higher conversion efficiency compared to standard PERC cells. In practice this means more energy output from the same surface area, with the advantage especially noticeable under low-light and partial-shading conditions.
How much does the Top Solar TS-EFS150 panel weigh, and can it be installed without professional help?
The 150 Wp flexible panels in the EFS series are significantly lighter than traditional glass-and-aluminum-framed modules, thanks to a thin ETFE laminate replacing tempered glass. Installation typically involves bonding the panel to the surface with suitable adhesive or securing it through mounting grommets, making DIY installation possible without building an additional support structure, unlike rigid panels.
Does the TS-EFS150 panel perform well in cold weather and Poland's winter climate?
Yes, the TS-EFS series features a low temperature coefficient, meaning smaller efficiency losses during hot summer days while maintaining stable output in winter. The shingled construction also performs better under low-irradiance conditions common during Polish autumn and winter months, resulting in more consistent energy yield throughout the year compared to traditional panels.
Are Top Solar TS-EFS150 panels bifacial, capturing energy from reflected light on the rear side?
No, the TS-EFS150 series panels are not bifacial modules — they generate power only from the front side. Rather than adding rear-side gain, the panel focuses on maximizing front-side efficiency through Back Contact technology and densely packed shingled cells, which is more practical for direct mounting on roofs, boat hulls, or camper van bodies where the rear side has no light access.
Add to compare