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Runtech China Brand review

RT300MW

300 Wp Monocrystalline
ComparePV verdict

Middle of its segment, weak in heat

Rank 13,216 of 14,005
Compare panels Datasheet PDF
Power (Wp)
300
Weak · bottom 20%
Efficiency (%)
18.44
Typical · median 19.40%
Density (Wp/m²)
183.3
Typical · median 193.8
Temp (%/°C)
-0.400
Weak · bottom 11%
Weight (kg)
19.0
Typical · median 20.8 kg
Warranty (yrs)
25
Typical · median 25 yrs

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

1,792 panels in the 200-400 W band, all technologies
Metric This panel Median Position in segment Overall rank
Module efficiency 18.44% 19.40% Typical 13,123
Power density 183.3 193.8 Typical 13,137
Temperature coefficient -0.400 -0.350 Weak · bottom 11% 13,674
Weight per kWp 63.3 59.4 Typical 12,880
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 1 caution
Not ideal for

Hot climates.

Watch-outs
-0.400 %/°C temperature coefficient

Bottom 11% of the 200-400 W band, against a median of -0.350.

Notes from the database
  • Efficiency of 18.4% is 3.4pp below the database median (21.8%)
  • At 183.3 W/m², this panel generates 34.8 W/m² less per unit area than database median (218.1 W/m²)
  • At -0.40%/°C, loses 0.10pp more power per degree than database median (-0.30%/°C)
  • Weight of 19.0 kg (7.5 kg below database median of 26.5 kg) allows easier transport and roof mounting
  • Ranked #13123 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 300 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 18.44 % Typical Segment median 19.40%
Vmpp · Impp 32.20 V · 9.32 A Operating point at max power
Voc · Isc 39.70 V · 9.97 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1650×992×35 mm · 1.64 m² of roof
Weight 19.0 kg Typical Typical · median 20.8 kg
Cells 60 Monocrystalline
Coefficient Pmax -0.400 %/°C Weak bottom 11% of its segment
Coefficient Voc · Isc -0.320 · 0.050 %/°C
NOCT 47 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 80.7 % Equals 232 W guaranteed
Degradation 2.50 → 0.70 % 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
-0.400 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Runtech China RT300MW 300 W 18.44% -0.400 19.0 kg You are here
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +4.9 pp
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +4.9 pp
ZEUS 1.2 FullBlack 280W 280 W 23.31% -0.260 14.3 kg Cooler, +4.9 pp, +5 yr warranty
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +4.7 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +4.7 pp
GKA182M285W 285 W 23.00% - 10.8 kg Lighter, +4.6 pp, +5 yr warranty
GKA182M260W 260 W 23.00% - 10.8 kg Lighter, +4.6 pp, +5 yr warranty
GKA182M270W 270 W 23.00% - 10.8 kg Lighter, +4.6 pp, +5 yr warranty
GKA182M300W 300 W 23.00% - 16.2 kg Lighter, +4.6 pp, +5 yr warranty
SPR-MAX3-400-COM 400 W 22.60% -0.270 19.0 kg Cooler, +4.2 pp, +15 yr warranty
LEPV 400 400 W 22.31% -0.290 20.0 kg +100 W, cooler, +3.9 pp
NS-360MH-60 360 W 22.12% -0.290 17.0 kg +60 W, cooler, +3.7 pp
NS-360MH-60 360 W 22.12% -0.290 17.0 kg +60 W, cooler, +3.7 pp
SPR-MAX3-390-COM 390 W 22.10% -0.270 19.0 kg Cooler, +3.7 pp, +15 yr warranty
MB_TG120ByB_390 390 W 21.80% -0.259 24.4 kg +90 W, cooler, +3.4 pp
EVPV380 380 W 21.70% -0.260 19.5 kg +80 W, cooler, +3.3 pp

Found 192 panels of the same or similar size to this one, within ±10 mm. See them here Found 296 panels of the same or similar size to this one, within ±25 mm. See them here Found 410 panels of the same or similar size to this one, within ±50 mm. See them here Found 472 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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