--- title: "Risen RSM132-8-720BHDG vs Risen RSM132-8-745BHDG - Solar Panel Comparison | ComparePV" description: "Compare Risen RSM132-8-720BHDG vs Risen RSM132-8-745BHDG side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/risen-energy-co-ltd-rsm132-8-720bhdg/risen-energy-co-ltd-rsm132-8-745bhdg" updated: 2026-09-11 --- # Risen RSM132-8-720BHDG vs Risen RSM132-8-745BHDG 745BHDG leads on the differences that matter The largest is module efficiency: 0.80 pp more efficient. 13 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Risen RSM132-8-720BHDG](https://comparepv.com/panel/risen-energy-co-ltd-rsm132-8-720bhdg) | [Risen RSM132-8-745BHDG](https://comparepv.com/panel/risen-energy-co-ltd-rsm132-8-745bhdg) | | Manufacturer | Risen | Risen | | Power | 720 Wp | 745 Wp | | Efficiency | 23.20 % | 24.00 % | | Technology | HJT | HJT | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 720BHDG | 745BHDG | Difference | | --- | --- | --- | --- | | Module efficiency | 23.20 % | 24.00 % | +0.80 pp for 745BHDG | | Power density | 231.8 Wp/m² | 239.8 Wp/m² | +8.0 Wp/m² for 745BHDG | | Rated power | 720 Wp | 745 Wp | +25 W for 745BHDG | | Weight per kWp | 55.6 kg/kWp | 50.3 kg/kWp | -5.2 kg/kWp for 745BHDG | | Weight | 40.0 kg | 37.5 kg | -2.5 kg for 745BHDG | | Dimensions | 2384x1303x35 mm | 2384x1303x33 mm | 2384x1303x35 mm vs 2384x1303x33 mm | ## Every compared parameter | Parameter | 720BHDG | 745BHDG | | --- | --- | --- | | Rated power | 720 Wp | 745 Wp | | Module efficiency | 23.20 % | 24.00 % | | Power density | 231.8 Wp/m² | 239.8 Wp/m² | | Open-circuit voltage | 50.18 V | 50.54 V | | Voltage at max power | 42.08 V | 42.38 V | | Short-circuit current | 18.19 A | 18.65 A | | Current at max power | 17.13 A | 17.59 A | | Temperature coefficient | -0.240 %/°C | -0.240 %/°C | | Dimensions | 2384x1303x35 mm | 2384x1303x33 mm | | Module area | 3.106 m² | 3.106 m² | | Weight | 40.0 kg | 37.5 kg | | Weight per kWp | 55.6 kg/kWp | 50.3 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.30 %/yr | 0.30 %/yr | | Cell technology | HJT | HJT | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 132 | 132 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, 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, 720BHDG:** 24,533 kWh - **Cumulative output, 745BHDG:** 25,385 kWh - **Gap:** 852 kWh ## Output when hot | Condition | Cell temperature | 720BHDG | 745BHDG | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 720 W | 745 W | 100.0% of rated power | | Cool, bright day | 40 °C | 694 W | 718 W | 96.4% of rated power | | Typical summer roof | 55 °C | 668 W | 691 W | 92.8% of rated power | | Hot roof | 70 °C | 642 W | 665 W | 89.2% of rated power | ## Against the whole database | Measure | 720BHDG | 745BHDG | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,306 | #303 | 14,005 | 745BHDG leads by 1,003 places | | Power density | #1,347 | #339 | 14,005 | 745BHDG leads by 1,008 places | | Heat behaviour | #13 | #13 | 14,005 | Tied - the same position in the database | | Weight | #9,909 | #3,718 | 14,005 | 745BHDG leads by 6,191 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #351 | #98 | 14,005 | 745BHDG leads by 253 places | ## Questions ### Which panel is better: Risen RSM132-8-720BHDG or Risen RSM132-8-745BHDG? According to our database: **Risen RSM132-8-745BHDG** has higher module efficiency (**24.00%** vs **23.20%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Risen RSM132-8-720BHDG and Risen RSM132-8-745BHDG? **Risen RSM132-8-720BHDG** has a module efficiency of **23.20%**, while **Risen RSM132-8-745BHDG** is **24.00%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Risen RSM132-8-720BHDG use vs Risen RSM132-8-745BHDG? **Risen RSM132-8-720BHDG** uses **HJT** cells; **Risen RSM132-8-745BHDG** 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 Risen RSM132-8-720BHDG and Risen RSM132-8-745BHDG? **Risen RSM132-8-720BHDG** has a **30 years** power warranty; **Risen RSM132-8-745BHDG** 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 Risen RSM132-8-720BHDG and Risen RSM132-8-745BHDG bifacial panels? Both **Risen RSM132-8-720BHDG** and **Risen RSM132-8-745BHDG** 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 - [Risen RSM132-8-720BHDG vs Risen RSM132-8-730BHDG](https://comparepv.com/compare/risen-energy-co-ltd-rsm132-8-720bhdg/risen-energy-co-ltd-rsm132-8-730bhdg) - 3 differences, the largest is module efficiency - [Risen RSM132-8-720BHDG vs Risen RSM132-8-725BHDG](https://comparepv.com/compare/risen-energy-co-ltd-rsm132-8-720bhdg/risen-energy-co-ltd-rsm132-8-725bhdg) - The same specification on paper - [Risen RSM132-8-720BHDG vs Risen RSM132-8-715BHDG](https://comparepv.com/compare/risen-energy-co-ltd-rsm132-8-720bhdg/risen-energy-co-ltd-rsm132-8-715bhdg) - 4 differences, the largest is weight - [Risen RSM132-8-720BHDG vs Risen RSM132-8-710BHDG](https://comparepv.com/compare/risen-energy-co-ltd-rsm132-8-720bhdg/risen-energy-co-ltd-rsm132-8-710bhdg) - 6 differences, the largest is weight - [Risen RSM132-8-720BHDG vs Risen RSM132-8-705BHDG](https://comparepv.com/compare/risen-energy-co-ltd-rsm132-8-720bhdg/risen-energy-co-ltd-rsm132-8-705bhdg) - 6 differences, the largest is module efficiency - [Risen RSM132-8-720BHDG vs Risen RSM132-8-700BHDG](https://comparepv.com/compare/risen-energy-co-ltd-rsm132-8-720bhdg/risen-energy-co-ltd-rsm132-8-700bhdg) - 6 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/risen-energy-co-ltd-rsm132-8-720bhdg/risen-energy-co-ltd-rsm132-8-745bhdg 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.