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Runtech China Brand review

RT120WM

120 Wp Monocrystalline
ComparePV verdict

Strong in heat, no clear weak spot

Rank 13,968 of 14,005
Compare panels Datasheet PDF
Power (Wp)
120
Typical for its class
Efficiency (%)
15.90
Typical · median 15.88%
Density (Wp/m²)
180.5
Strong · top 24%
Temp (%/°C)
-0.230
Strong · top 1%
Weight (kg)
6.8
Strong · 4.5 kg below median
Warranty (yrs)
-
Not published

The Runtech China RT Compact Mono series consists of advanced modules based on high-efficiency monocrystalline cells, designed to maximize energy yields on limited mounting surfaces. The use of Half-Cut cell technology significantly reduces internal losses and improves the efficiency of the entire system in partial shading conditions, which is crucial for installations on complex residential roofs. Thanks to the use of multi-busbar MBB connections, these panels offer more stable current flow and higher resistance to micro-cracks, which directly translates into long-term reliability and mechanical durability even under heavy snow or wind loads. This addresses the typical problem of rapid module degradation in the variable Polish climate. This product is dedicated to investors seeking an optimal balance between price and modern technology, offering efficiency that exceeds standard market solutions. The compact frame format makes the panels much easier to install, which will be appreciated by installers working at heights. By choosing the RT Compact Mono series, the user gains an excellent ratio of generated power to external dimensions, allowing for the installation of an efficient photovoltaic system even on small or unconventional roof surfaces.

Ranking

296 panels in the 20-220 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 15.90% 15.88% Typical 13,662
Power density 180.5 158.7 Strong · top 24% 13,203
Temperature coefficient -0.230 -0.370 Strong · top 1% 9
Weight per kWp 56.7 71.2 Strong · top 18% 10,792
Performance warranty - 25 yrs Not published 13,880
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 0 caution
Best for

Hot roofs and southern climates, weight-limited structures and roofs where every square metre counts.

Strengths
-0.230 %/°C temperature coefficient

Top 1% of the 20-220 W band, against a median of -0.370. Ranked 9th in the whole database.

56.7 kg per kWp

Top 18% of the 20-220 W band, against a median of 71.2.

180.5 watts per square metre

Top 24% of the 20-220 W band, against a median of 158.7.

Notes from the database
  • Efficiency of 15.9% is 5.9pp below the database median (21.8%)
  • Power density of 180.4 W/m² is 37.7 W/m² below database median (218.1 W/m²) - needs more roof space
  • Temperature coefficient of -0.23%/°C vs median -0.30%/°C means ~3% less power loss at 65°C
  • At 6.8 kg, this panel is 19.7 kg lighter than database median (26.5 kg) - easier handling during installation
  • In the top 98% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 120 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 15.90 % Typical Segment median 15.88%
Vmpp · Impp 18.60 V · 6.46 A Operating point at max power
Voc · Isc 22.80 V · 6.95 A Sizes the string length
Max system voltage 800 V Longer strings than 1000 V modules
Dimensions 1000×665×35 mm · 0.67 m² of roof
Weight 6.8 kg Strong Strong · 4.5 kg below median
Cells 36 Monocrystalline
Coefficient Pmax -0.230 %/°C Strong top 1% of its segment
Coefficient Voc · Isc -0.330 · 0.100 %/°C
NOCT 47 °C At 800 W/m², 20 °C ambient

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
-0.230 %/°C against a segment median of -0.370
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Runtech China RT120WM 120 W 15.90% -0.230 6.8 kg You are here
GKA182M150W 150 W 23.00% - 9.0 kg +30 W, heavier, +7.1 pp
GKA182M160W 160 W 23.00% - 9.0 kg +40 W, heavier, +7.1 pp
GKA182M120W 120 W 23.00% - 6.1 kg +7.1 pp
GKA182M135W 135 W 23.00% - 6.1 kg +15 W, +7.1 pp
GKA182M100W 100 W 23.00% - 6.1 kg -20 W, +7.1 pp
GKA182M110W 110 W 23.00% - 6.1 kg -10 W, +7.1 pp
NS-100MH-36 100 W 21.29% -0.290 5.0 kg -20 W, hotter, +5.4 pp
NS-100MH-36 100 W 21.29% -0.290 5.0 kg -20 W, hotter, +5.4 pp
YH120W-18M 120 W 19.63% -0.350 6.4 kg Hotter, +3.7 pp
YH100W-12M 100 W 19.63% -0.400 1.9 kg Hotter, lighter, +3.7 pp
YH120W-18M 120 W 19.63% -0.350 6.4 kg Hotter, +3.7 pp
SE5-150M 150 W 18.94% -0.350 8.2 kg +30 W, hotter, +3.0 pp
YH115W-18M 115 W 18.81% -0.350 6.4 kg Hotter, +2.9 pp
YH115W-18M 115 W 18.81% -0.350 6.4 kg Hotter, +2.9 pp
LKS-5M-115 115 W 17.20% - 6.8 kg +1.3 pp
DLXN-M10-100W 100 W 17.00% -0.410 5.8 kg -20 W, hotter, +1.1 pp

Found 6 panels of the same or similar size to this one, within ±10 mm. See them here Found 7 panels of the same or similar size to this one, within ±25 mm. See them here Found 17 panels of the same or similar size to this one, within ±50 mm. See them here Found 26 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty does the Runtech China RT Compact Mono series come with?
The manufacturer provides two separate warranties: a 15-year product warranty covering material and workmanship defects, and a 25-year linear power output warranty guaranteeing the module retains a defined performance level throughout its service life. This coverage is standard for this class of monocrystalline modules and gives homeowners confidence in the long-term reliability of their PV system.
Is the RT Compact Mono series suitable for a small or irregularly shaped roof?
Yes, the RT Compact Mono series was specifically designed for installations with limited or non-standard mounting area. The compact frame dimensions allow more efficient use of available roof sections, and the 300 Wp peak power per module means even a modest number of panels can deliver meaningful energy output. Installers appreciate the easier handling and reduced labor time when working at height.
What is half-cut cell technology and what does it mean for RT Compact Mono performance?
Half-cut technology splits each monocrystalline cell in two, lowering internal resistance and reducing resistive losses. In real-world conditions, RT Compact Mono modules perform better under partial shading — from a chimney or dormer window, for example — compared to conventional full-cell modules. This advantage is particularly relevant for typical residential rooftops where some shading is nearly unavoidable.
Can RT Compact Mono panels withstand heavy snow loads and harsh winter conditions?
The RT Compact Mono series uses multi-busbar MBB interconnection, which significantly increases cell resistance to microcracks — the primary cause of accelerated degradation under cyclical mechanical stress. The modules are engineered to handle high snow loads and wind pressure, making them well-suited for the variable climate across central and northern Europe.
What is the peak power of an RT Compact Mono panel and is it enough for a residential home?
Each module delivers up to 300 Wp under standard test conditions (STC). A typical single-family home consuming 4,000–5,000 kWh per year generally requires a 4–6 kWp system, which translates to 14–20 panels from this series. The compact form factor makes it possible to fit such a system even on rooftops with limited usable surface area.
How does the RT Compact Mono series compare to standard monocrystalline panels on the market?
Compared to conventional mono modules, the RT Compact Mono combines half-cut cell architecture with multi-busbar MBB electrodes, resulting in higher module efficiency, improved shading tolerance, and reduced susceptibility to microcracks. The compact frame design also simplifies logistics and on-roof handling, which lowers overall balance-of-system (BoS) labor costs relative to larger, heavier modules.
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