--- title: "MY Solar MS730N-HJTGB vs MY Solar MS740N-HJTGB - Solar Panel Comparison | ComparePV" description: "Compare MY Solar MS730N-HJTGB vs MY Solar MS740N-HJTGB side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/my-solar-ms730n-hjtgb/my-solar-ms740n-hjtgb" updated: 2026-09-11 --- # MY Solar MS730N-HJTGB vs MY Solar MS740N-HJTGB MS740N-HJTGB leads on the differences that matter The largest is module efficiency: 0.32 pp more efficient. 15 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 | [MY Solar MS730N-HJTGB](https://comparepv.com/panel/my-solar-ms730n-hjtgb) | [MY Solar MS740N-HJTGB](https://comparepv.com/panel/my-solar-ms740n-hjtgb) | | Manufacturer | MY Solar | MY Solar | | Power | 730 Wp | 740 Wp | | Efficiency | 23.50 % | 23.82 % | | Technology | HJT | HJT | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | MS730N-HJTGB | MS740N-HJTGB | Difference | | --- | --- | --- | --- | | Module efficiency | 23.50 % | 23.82 % | +0.32 pp for MS740N-HJTGB | | Power density | 235.0 Wp/m² | 238.2 Wp/m² | +3.2 Wp/m² for MS740N-HJTGB | | Rated power | 730 Wp | 740 Wp | +10 W for MS740N-HJTGB | ## Every compared parameter | Parameter | MS730N-HJTGB | MS740N-HJTGB | | --- | --- | --- | | Rated power | 730 Wp | 740 Wp | | Module efficiency | 23.50 % | 23.82 % | | Power density | 235.0 Wp/m² | 238.2 Wp/m² | | Open-circuit voltage | 51.05 V | 51.35 V | | Voltage at max power | 42.97 V | 43.25 V | | Short-circuit current | 17.81 A | 17.95 A | | Current at max power | 16.99 A | 17.13 A | | Temperature coefficient | -0.240 %/°C | -0.240 %/°C | | Dimensions | 2384x1303x35 mm | 2384x1303x35 mm | | Module area | 3.106 m² | 3.106 m² | | Weight | 38.3 kg | 38.3 kg | | Weight per kWp | 52.5 kg/kWp | 51.8 kg/kWp | | Product warranty | 30 yrs | 30 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | - | | Cell technology | HJT | HJT | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 132 | | Bifacial | Yes | Yes | ## Thirty-year yield A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.240 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other. - **Cumulative output, MS730N-HJTGB:** 24,493 kWh - **Cumulative output, MS740N-HJTGB:** 24,828 kWh - **Gap:** 335 kWh ## Output when hot | Condition | Cell temperature | MS730N-HJTGB | MS740N-HJTGB | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 730 W | 740 W | 100.0% of rated power | | Cool, bright day | 40 °C | 704 W | 713 W | 96.4% of rated power | | Typical summer roof | 55 °C | 677 W | 687 W | 92.8% of rated power | | Hot roof | 70 °C | 651 W | 660 W | 89.2% of rated power | ## Against the whole database | Measure | MS730N-HJTGB | MS740N-HJTGB | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #716 | #418 | 14,005 | MS740N-HJTGB leads by 298 places | | Power density | #800 | #431 | 14,005 | MS740N-HJTGB leads by 369 places | | Heat behaviour | #13 | #13 | 14,005 | Tied - the same position in the database | | Weight | #5,993 | #5,125 | 14,005 | MS740N-HJTGB leads by 868 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #8 | #3 | 14,005 | MS740N-HJTGB leads by 5 places | ## Questions ### Which panel is better: MY Solar MS730N-HJTGB or MY Solar MS740N-HJTGB? According to our database: **MY Solar MS740N-HJTGB** has higher module efficiency (**23.82%** vs **23.50%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of MY Solar MS730N-HJTGB and MY Solar MS740N-HJTGB? **MY Solar MS730N-HJTGB** has a module efficiency of **23.50%**, while **MY Solar MS740N-HJTGB** is **23.82%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does MY Solar MS730N-HJTGB use vs MY Solar MS740N-HJTGB? **MY Solar MS730N-HJTGB** uses **HJT** cells; **MY Solar MS740N-HJTGB** uses **HJT**. 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 MY Solar MS730N-HJTGB and MY Solar MS740N-HJTGB? **MY Solar MS730N-HJTGB** has a **30 years** power warranty; **MY Solar MS740N-HJTGB** 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 MY Solar MS730N-HJTGB and MY Solar MS740N-HJTGB bifacial panels? Both **MY Solar MS730N-HJTGB** and **MY Solar MS740N-HJTGB** are bifacial - they capture reflected light from the ground, which can add 5**-15%** more annual energy on ground-mount or elevated rooftop installations with a light surface beneath. ## Related comparisons - [MY Solar MS730N-HJTGB vs MY Solar MS735N-HJTGB](https://comparepv.com/compare/my-solar-ms730n-hjtgb/my-solar-ms735n-hjtgb) - The same specification on paper - [MY Solar MS730N-HJTGB vs MY Solar MS725N-HJTGB](https://comparepv.com/compare/my-solar-ms730n-hjtgb/my-solar-ms725n-hjtgb) - The same specification on paper - [MY Solar MS730N-HJTGB vs MY Solar MS720N-HJTGB](https://comparepv.com/compare/my-solar-ms730n-hjtgb/my-solar-ms720n-hjtgb) - 4 differences, the largest is temperature coefficient - [MY Solar MS730N-HJTGB vs MY Solar MS715N-HJTGB](https://comparepv.com/compare/my-solar-ms730n-hjtgb/my-solar-ms715n-hjtgb) - 4 differences, the largest is module efficiency - [MY Solar MS730N-HJTGB vs MY Solar MS710N-HJTGB](https://comparepv.com/compare/my-solar-ms730n-hjtgb/my-solar-ms710n-hjtgb) - 5 differences, the largest is module efficiency - [MY Solar MS730N-HJTGB vs MY Solar MS705N-HJTGB](https://comparepv.com/compare/my-solar-ms730n-hjtgb/my-solar-ms705n-hjtgb) - 5 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/my-solar-ms730n-hjtgb/my-solar-ms740n-hjtgb 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.