Space saver, no clear weak spot
The Kingdom KDM series is built for installers and investors looking for panels that combine high performance with reliability proven across many markets. The modules use half-cut cells and modern N-type TOPCon technology, which translates into better power retention under partial shading and higher operating temperatures on roofs or facades. Thanks to the use of multiple busbars (SMBB), current inside the cell travels a shorter path, which reduces resistive losses and increases the stability of energy output throughout the panel's service life. Bifacial dual-glass versions allow the module to capture light reflected from the ground, which is particularly valuable in ground-mounted installations and flat-roof projects where every extra kilowatt-hour counts. A silver frame and a self-cleaning coating help keep the panel in good condition and reduce losses caused by dirt buildup, which has a real impact on lowering the cost of energy over the full service life (LCOE). The KDM series works well in both residential and commercial projects, where the key is a balance between price, longevity, and supply stability from a manufacturer present in more than one hundred markets.
Ranking
Signals from the data
Commercial, utility-scale and shaded-installations.
Top 12% of the N-type 550-600 W segment, against a median of 224.5.
Top 20% of the N-type 550-600 W segment, against a median of 22.45%.
Efficiency up to 22.8% matches direct peer comparables (Talesun TM7G72M – 22.8%, Horay Solar Ocean – 22.8%, AE Solar HORIZON – 22.86%), showing the KDM series is technologically competitive with the N-type front-runners despite the manufacturer's non-Tier-1 BNEF status.
The combination of N-type TOPCon cells, half-cut architecture, and multi-busbar (SMBB) design reduces resistive losses and improves power retention under partial shading and elevated roof-surface temperatures, translating into higher and more stable annual energy yield.
The 30-year power warranty places the KDM series in the upper tier of the segment, on par with leading N-type modules in the comparable 570–590 Wp power range, giving investors confidence in long-term energy production for LCOE calculations.
The self-cleaning coating reduces soiling-related losses, which is particularly valuable in low-tilt installations, and meaningfully lowers the levelized cost of energy over the full operating lifetime.
Zhejiang Kingdom Solar has operated since 2010 and supplies KDM modules to over 100 markets, indicating a mature supply chain and operational experience despite lacking BNEF Tier-1 bankable status.
Kingdom Solar does not appear on the BNEF Tier-1 list (unlike peer comparables such as Talesun or AE Solar), which can complicate bank financing for larger commercial projects where bankability status is a lender requirement.
Against a 30-year power warranty, the 12-year product (materials and workmanship) warranty is shorter than what many current N-type manufacturers now offer (15–25 years), creating a mismatch between the power warranty and the defects warranty.
Annual manufacturing capacity of roughly 1 GW is significantly smaller than major Tier-1 players (Jinko, Trina, JA Solar operate tens of GW), which for large orders may mean longer lead times or reduced supply flexibility.
- Efficiency of 22.8% matches the N-type 550-600W median
- 228.5 W/m² power density - 4.0 W/m² more than N-type 550-600W median (224.5 W/m²), more power per roof area
- At -0.29%/°C, hot weather performance is typical for N-type 550-600W panels
- Weight of 28.0 kg (1.5 kg below N-type 550-600W median of 29.5 kg) allows easier transport and roof mounting
- Ranked #2714 out of 14005 panels for efficiency in the database
Specifications
Datasheet charts
Measured curves published by Kingdom in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 590 Wp appear here. The rest cover the whole series.
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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