--- title: "Kingdom KD-M440-108-N 440W Solar Panel - Specs & Review | ComparePV" description: "Kingdom KD-M440-108-N 440W solar panel. Specs: 22.50% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/kingdom-kd-m440-108-n-1" updated: 2026-09-11 --- # Kingdom KD-M440-108-N Space saver, no clear weak spot 321 panels in the segment N-type 400-450 W ## Identity - **Manufacturer:** Kingdom - **Model:** KD-M440-108-N - **Rated power:** 440 W - **Cell technology:** N-type ## How it compares Compared against segment N-type 400-450 W (321 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 440 W | 430 W | Strong - top 23% | | | Module efficiency | 22.50% | 21.91% | Strong - top 10% | 4,222 | | Power density | 225.3 | 218.3 | Strong - top 9% | 4,099 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight (kg) | 22.0 kg | 22.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.50% | 21.91% | Strong - top 10% | 4,222 | | Power density | 225.3 | 218.3 | Strong - top 9% | 4,099 | | Temperature coefficient | -0.290 | -0.290 | Typical | 2,165 | | Weight per kWp | 50.0 | 51.2 | Typical | 3,317 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **225.3 watts per square metre** - Top 9% of the N-type 400-450 W segment, against a median of 218.3. Ranked 4,099th in the whole database. - **22.50% module efficiency** - Top 10% of the N-type 400-450 W segment, against a median of 21.91%. Ranked 4,222nd in the whole database. - **Best for:** Roofs where every square metre counts and small roofs that need every watt. ## Specification ### Electrical - **Rated power (Pmax):** 440 W - **Efficiency:** 22.50 % - **Voltage at Pmax (Vmp):** 32.81 V - **Current at Pmax (Imp):** 13.41 A - **Open-circuit voltage (Voc):** 39.38 V - **Short-circuit current (Isc):** 13.86 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.290 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.045 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Cell count:** 108 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 22.0 kg - **Area:** 1.95 m2 - **Power density:** 225.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 86.4 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 380 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 4222 of 14005 | | Power density | 4099 of 14005 | | Temperature coefficient | 2165 of 14005 | | Weight | 3317 of 14005 | | Warranty | 21 of 14005 | ## Notable figures - 22.5% module efficiency - 0.6pp better than the \*\*N-type 400-450W\*\* median of 21.9% - 225.3 W/m² power density - 7.0 W/m² more than \*\*N-type 400-450W\*\* median (218.3 W/m²), more power per roof area - Temperature coefficient of -0.29%/°C matches the \*\*N-type 400-450W\*\* median - In the top 30% for efficiency among all N-type panels ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/20250731134657_729-190546a3a716.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +50 W, cooler, +2.0 pp | | [Suntech STP-NT11/48QGSF-490](https://comparepv.com/panel/suntech-stp-nt11-48qgsf-490) | 490 W | +50 W, cooler, +2.0 pp | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | +45 W, cooler, +1.8 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +45 W, cooler, +1.8 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +45 W, cooler, +1.8 pp | | [Gokin GK-5-54HG-485M](https://comparepv.com/panel/gokin-gk-5-54hg-485m) | 485 W | +45 W, cooler, +1.8 pp | | [Heckert Solar ZEUS 3.0+ 108 485WP](https://comparepv.com/panel/heckert-solar-zeus-3-0-108-485wp) | 485 W | +45 W, cooler, +1.8 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +70 W, cooler, +2.5 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +55 W, cooler, +2.3 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +65 W, cooler, +2.2 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +60 W, cooler, +2.0 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +60 W, cooler, +2.0 pp | --- Source: https://comparepv.com/panel/kingdom-kd-m440-108-n-1 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.