--- title: "Mission Solar MST12660HP3G vs Mission Solar MSX10-445HN0B - Solar Panel Comparison | ComparePV" description: "Compare Mission Solar MST12660HP3G vs Mission Solar MSX10-445HN0B side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/mission-solar-mst12660hp3g/mission-solar-msx10-445hn0b" updated: 2026-09-11 --- # Mission Solar MST12660HP3G vs Mission Solar MSX10-445HN0B MSX10-445HN0B leads on the differences that matter The largest is module efficiency: 1.60 pp more efficient. 3 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Mission Solar MST12660HP3G](https://comparepv.com/panel/mission-solar-mst12660hp3g) | [Mission Solar MSX10-445HN0B](https://comparepv.com/panel/mission-solar-msx10-445hn0b) | | Manufacturer | Mission Solar | Mission Solar | | Power | 660 Wp | 445 Wp | | Efficiency | 21.20 % | 22.80 % | | Technology | PERC | N-type | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | MST12660HP3G | MSX10-445HN0B | Difference | | --- | --- | --- | --- | | Module efficiency | 21.20 % | 22.80 % | +1.60 pp for MSX10-445HN0B | | Temperature coefficient | -0.340 %/°C | -0.290 %/°C | +0.050 %/°C for MSX10-445HN0B | | Rated power | 660 Wp | 445 Wp | +215 W for MST12660HP3G | | Power density | 212.5 Wp/m² | 227.9 Wp/m² | +15.4 Wp/m² for MSX10-445HN0B | | Weight | 38.7 kg | 21.3 kg | -17.4 kg for MSX10-445HN0B | | Weight per kWp | 58.6 kg/kWp | 47.9 kg/kWp | -10.8 kg/kWp for MSX10-445HN0B | | Open-circuit voltage | 45.90 V | 39.69 V | 6.21 V apart | | Short-circuit current | 18.45 A | 14.02 A | 4.43 A apart | | Module area | 3.106 m² | 1.953 m² | 1.154 m² apart | | Cell technology | PERC | N-type | PERC vs N-type | | Voltage at max power | 38.10 V | 33.44 V | 4.66 V apart | | Current at max power | 17.35 A | 13.31 A | 4.04 A apart | | Cell count | 132 | 108 | 24 cells apart | | Bifacial | Yes | No | Yes vs No | | Dimensions | 2384x1303x35 mm | 1722x1134x35 mm | 2384x1303x35 mm vs 1722x1134x35 mm | ## Every compared parameter | Parameter | MST12660HP3G | MSX10-445HN0B | | --- | --- | --- | | Rated power | 660 Wp | 445 Wp | | Module efficiency | 21.20 % | 22.80 % | | Power density | 212.5 Wp/m² | 227.9 Wp/m² | | Open-circuit voltage | 45.90 V | 39.69 V | | Voltage at max power | 38.10 V | 33.44 V | | Short-circuit current | 18.45 A | 14.02 A | | Current at max power | 17.35 A | 13.31 A | | Temperature coefficient | -0.340 %/°C | -0.290 %/°C | | Dimensions | 2384x1303x35 mm | 1722x1134x35 mm | | Module area | 3.106 m² | 1.953 m² | | Weight | 38.7 kg | 21.3 kg | | Weight per kWp | 58.6 kg/kWp | 47.9 kg/kWp | | Product warranty | - | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.45 %/yr | 0.45 %/yr | | Cell technology | PERC | N-type | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 108 | | Bifacial | Yes | No | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, MST12660HP3G:** 21,734 kWh - **Cumulative output, MSX10-445HN0B:** 14,814 kWh - **Gap:** 6,920 kWh ## Output when hot | Condition | Cell temperature | MST12660HP3G | MSX10-445HN0B | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 660 W | 445 W | 100.0% of rated power | | Cool, bright day | 40 °C | 626 W | 426 W | 94.9% of rated power | | Typical summer roof | 55 °C | 593 W | 406 W | 89.8% of rated power | | Hot roof | 70 °C | 559 W | 387 W | 84.7% of rated power | ## Against the whole database | Measure | MST12660HP3G | MSX10-445HN0B | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #9,076 | #2,714 | 14,005 | MSX10-445HN0B leads by 6,362 places | | Power density | #8,959 | #2,790 | 14,005 | MSX10-445HN0B leads by 6,169 places | | Heat behaviour | #8,778 | #2,165 | 14,005 | MSX10-445HN0B leads by 6,613 places | | Weight | #11,817 | #1,948 | 14,005 | MSX10-445HN0B leads by 9,869 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #5,651 | #5,891 | 14,005 | MST12660HP3G leads by 240 places | ## Questions ### Which panel is better: Mission Solar MST12660HP3G or Mission Solar MSX10-445HN0B? According to our database: **Mission Solar MSX10-445HN0B** has higher module efficiency (**22.80%** vs **21.20%**); **Mission Solar MSX10-445HN0B** tolerates heat better (temp coeff **-0.290%/°C** vs **-0.340%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Mission Solar MST12660HP3G and Mission Solar MSX10-445HN0B? **Mission Solar MST12660HP3G** has a module efficiency of **21.20%**, while **Mission Solar MSX10-445HN0B** is **22.80%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Mission Solar MST12660HP3G use vs Mission Solar MSX10-445HN0B? **Mission Solar MST12660HP3G** uses **PERC** cells; **Mission Solar MSX10-445HN0B** uses **N-type**. Modern **n-type** technologies (**TOPCon**, **HJT**, BC) typically deliver higher efficiency and lower degradation compared to older **PERC** (p-type) cells. ### What is the warranty on Mission Solar MST12660HP3G and Mission Solar MSX10-445HN0B? **Mission Solar MST12660HP3G** has a **30 years** power warranty; **Mission Solar MSX10-445HN0B** has a **30 years** power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80**-87%**). Product (materials) warranties are usually shorter. ### Are Mission Solar MST12660HP3G and Mission Solar MSX10-445HN0B bifacial panels? **Mission Solar MST12660HP3G** is bifacial (captures light from both faces); **Mission Solar MSX10-445HN0B** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [Mission Solar MST12660HP3G vs Mission Solar MST12670HP3G](https://comparepv.com/compare/mission-solar-mst12660hp3g/mission-solar-mst12670hp3g) - 3 differences, the largest is module efficiency - [Mission Solar MST12660HP3G vs Mission Solar MST12665HP3G](https://comparepv.com/compare/mission-solar-mst12660hp3g/mission-solar-mst12665hp3g) - One difference: module efficiency - [Mission Solar MSX10-445HN0B vs Mission Solar MSX10-440HN0B](https://comparepv.com/compare/mission-solar-msx10-445hn0b/mission-solar-msx10-440hn0b) - One difference: module efficiency - [Mission Solar MSX10-445HN0B vs Mission Solar MSX10-435HN0B](https://comparepv.com/compare/mission-solar-msx10-445hn0b/mission-solar-msx10-435hn0b) - 3 differences, the largest is module efficiency - [Mission Solar MST12660HP3G vs Mission Solar MST12R620HN3G](https://comparepv.com/compare/mission-solar-mst12660hp3g/mission-solar-mst12r620hn3g) - 14 differences, the largest is module efficiency - [Mission Solar MST12660HP3G vs Mission Solar MST12R615HN3G](https://comparepv.com/compare/mission-solar-mst12660hp3g/mission-solar-mst12r615hn3g) - 14 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/mission-solar-mst12660hp3g/mission-solar-msx10-445hn0b Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.