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Techwise Solar TW-280MM-1
Techwise Solar Brand review

TW-280MM-1

280 Wp Monocrystalline
ComparePV verdict

Light for its output, short guarantee

Rank 13,096 of 14,005
Compare panels Datasheet PDF
Power (Wp)
280
Weak · bottom 22%
Efficiency (%)
21.12
Strong · top 4%
Density (Wp/m²)
211.2
Strong · top 3%
Temp (%/°C)
-0.400
Weak · bottom 15%
Weight (kg)
12.5
Strong · 7.0 kg below median
Warranty (yrs)
20
Weak · bottom 2%

The Techwise Solar Micro Sun Series is designed for installations where compact size and flexible power selection are key - from small panels for mobile applications to larger modules for lightweight structures. It features monocrystalline cells in configurations suitable for various formats, making it easy to install on campers, boats, patios, in off-grid systems, and as backup power.

A key feature is a wide range of sizes, as well as a design focused on practical durability in everyday use. The modules utilize single glass, and in some variants, you'll find half-cell architecture, which helps to minimize losses in partially shaded conditions and stabilize performance in less ideal environments. The Micro Sun Series solves the problem of limited space and difficult mounting surfaces, providing predictable performance in small systems and easy scalability.

It's a good choice for users who need panels for custom, service, and mobile installations - where standard roof-mounted modules are simply too large or impractical.

Ranking

1,302 panels in the 180-380 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 21.12% 18.70% Strong · top 4% 9,255
Power density 211.2 186.1 Strong · top 3% 9,254
Temperature coefficient -0.400 -0.360 Weak · bottom 15% 13,674
Weight per kWp 44.6 62.3 Strong · top 1% 498
Performance warranty 20 yrs 25 yrs Weak · bottom 2% 13,796
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 2 caution
Best for

Off-grid and shaded-installations.

Not ideal for

Owners who want a long output guarantee and hot climates.

Strengths
44.6 kg per kWp

Top 1% of the 180-380 W band, against a median of 62.3. Ranked 498th in the whole database.

211.2 watts per square metre

Top 3% of the 180-380 W band, against a median of 186.1. Ranked 9,254th in the whole database.

21.12% module efficiency

Top 4% of the 180-380 W band, against a median of 18.70%. Ranked 9,255th in the whole database.

Watch-outs
20 year performance warranty

Bottom 2% of the 180-380 W band, against a median of 25 yrs. Ranked 13,796th in the whole database.

-0.400 %/°C temperature coefficient

Bottom 15% of the 180-380 W band, against a median of -0.360.

Notes from the database
  • Module efficiency of 21.1% is 0.7pp below average for database panels (median: 21.8%)
  • At 211.2 W/m², this panel generates 6.9 W/m² less per unit area than database median (218.1 W/m²)
  • -0.40%/°C temperature coefficient - 0.10pp worse than database median (-0.30%/°C), expect higher hot weather losses
  • At 12.5 kg, this panel is 14.0 kg lighter than database median (26.5 kg) - easier handling during installation
  • In the top 66% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 280 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.12 % Strong Segment median 18.70%
Vmpp · Impp 18.30 V · 15.30 A Operating point at max power
Voc · Isc 22.05 V · 18.43 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1722×770×30 mm · 1.33 m² of roof
Weight 12.5 kg Strong Strong · 7.0 kg below median
Cells 72 Monocrystalline
Coefficient Pmax -0.400 %/°C Weak bottom 15% of its segment
Coefficient Voc · Isc -0.300 · 0.060 %/°C
Product warranty 10 years Hardware defects only
Performance warranty 20 years Weak bottom 2% · median 25 yrs

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
-0.400 %/°C against a segment median of -0.360
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Techwise Solar TW-280MM-1 280 W 21.12% -0.400 12.5 kg You are here
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, +2.2 pp, +5 yr warranty
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, +2.2 pp, +5 yr warranty
ZEUS 1.2 FullBlack 280W 280 W 23.31% -0.260 14.3 kg Cooler, +2.2 pp, +10 yr warranty
NS-330MH-80 330 W 23.15% -0.290 15.0 kg +50 W, cooler, +2.0 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg +50 W, cooler, +2.0 pp
GKA182M285W 285 W 23.00% - 10.8 kg Lighter, +1.9 pp, +10 yr warranty
GKA182M240W 240 W 23.00% - 10.8 kg -40 W, +1.9 pp, +10 yr warranty
GKA182M260W 260 W 23.00% - 10.8 kg -20 W, +1.9 pp, +10 yr warranty
GKA182M270W 270 W 23.00% - 10.8 kg Lighter, +1.9 pp, +10 yr warranty
NS-290MH-72 290 W 22.54% -0.290 12.5 kg Cooler, +1.4 pp, +5 yr warranty
NS-290MH-72 290 W 22.54% -0.290 12.5 kg Cooler, +1.4 pp, +5 yr warranty
NS-280MH-72 280 W 21.76% -0.290 12.5 kg Cooler, +0.6 pp, +5 yr warranty
NS-280MH-72 280 W 21.76% -0.290 12.5 kg Cooler, +0.6 pp, +5 yr warranty
NS-270MH-72 270 W 20.99% -0.290 12.5 kg -10 W, cooler, +5 yr warranty
NS-270MH-72 270 W 20.99% -0.290 12.5 kg -10 W, cooler, +5 yr warranty
SHARK 275 275 W 20.65% -0.400 16.0 kg Heavier, -0.5 pp

Found 1 panel of the same or similar size to this one, within ±10 mm. See them here Found 12 panels of the same or similar size to this one, within ±25 mm. See them here Found 13 panels of the same or similar size to this one, within ±50 mm. See them here Found 13 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What applications is the Techwise Solar Micro Sun Series suitable for?
Micro Sun Series offers a maximum power output of 330 Wp and is designed for applications where compact size and flexible power selection matter - campers, boats, gazebos, off-grid systems, and backup power. The wide range of available sizes makes it possible to fit a module onto irregular surfaces where a standard rooftop panel simply won't fit.
Does the Micro Sun Series use monocrystalline or polycrystalline cells?
Micro Sun Series is built with monocrystalline silicon cells, which deliver higher efficiency and better energy yield on limited mounting surfaces than polycrystalline cells. This matters most in small mobile installations, where every square centimeter of panel area affects the amount of power generated.
What is half-cell architecture in Micro Sun Series panels, and is it worth choosing?
Half-cell architecture splits standard cells in half, reducing current losses and internal resistance within the module. In practice this means better performance under partial shading - for example, when a camper panel is partly shaded by an antenna or air conditioner. Not every Micro Sun Series variant includes this technology, so it's worth checking the datasheet for the specific model.
What warranty comes with the Techwise Solar Micro Sun Series?
The Micro Sun Series is backed by a 10-year product warranty and a 20-year linear power output warranty. This means the manufacturer guarantees a defined efficiency level throughout two decades of use, which is standard coverage for this class of mobile and niche PV products.
Are Micro Sun Series panels bifacial?
No, Micro Sun Series modules are monofacial and use a single-glass construction. This design is lighter and less costly to produce, which suits mobile and temporary applications well, where weight and price matter more than maximizing yield from reflected light.
Are Micro Sun Series panels suitable for mounting on a camper or boat?
Yes, this is one of the series' primary use cases. Compact dimensions, flexible power ratings, and a design built for irregular, smaller surfaces make Micro Sun Series a good fit for camper roofs, boats, or portable off-grid kits, where standard rooftop modules are too large or impractical.
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