--- title: "Sunova TS-BG60(450) vs Sunova TS-BWT66(715)-G12 - Solar Panel Comparison | ComparePV" description: "Compare Sunova TS-BG60(450) vs Sunova TS-BWT66(715)-G12 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/sunova-ts-bg60-450/sunova-ts-bwt66-715-g12" updated: 2026-09-11 --- # Sunova TS-BG60(450) vs Sunova TS-BWT66(715)-G12 BWT66(715)-G12 leads on the differences that matter The largest is module efficiency: 2.15 pp more efficient. 4 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Sunova TS-BG60(450)](https://comparepv.com/panel/sunova-ts-bg60-450) | [Sunova TS-BWT66(715)-G12](https://comparepv.com/panel/sunova-ts-bwt66-715-g12) | | Manufacturer | Sunova | Sunova | | Power | 450 Wp | 715 Wp | | Efficiency | 20.85 % | 23.00 % | | Technology | PERC | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | BG60(450) | BWT66(715)-G12 | Difference | | --- | --- | --- | --- | | Module efficiency | 20.85 % | 23.00 % | +2.15 pp for BWT66(715)-G12 | | Temperature coefficient | -0.330 %/°C | -0.290 %/°C | +0.040 %/°C for BWT66(715)-G12 | | Rated power | 450 Wp | 715 Wp | +265 W for BWT66(715)-G12 | | Power density | 208.5 Wp/m² | 230.2 Wp/m² | +21.6 Wp/m² for BWT66(715)-G12 | | Weight | 26.3 kg | 33.9 kg | -7.6 kg for BG60(450) | | Weight per kWp | 58.4 kg/kWp | 47.4 kg/kWp | -11.0 kg/kWp for BWT66(715)-G12 | | Open-circuit voltage | 41.46 V | 46.68 V | 5.22 V apart | | Short-circuit current | 13.47 A | 18.92 A | 5.45 A apart | | Module area | 2.158 m² | 3.106 m² | 0.948 m² apart | | Cell technology | PERC | TOPCon | PERC vs TOPCon | | Voltage at max power | 34.62 V | 40.35 V | 5.73 V apart | | Current at max power | 13.01 A | 17.72 A | 4.71 A apart | | Cell count | 120 | 132 | 12 cells apart | | Annual degradation | 0.45 %/yr | 0.40 %/yr | -0.05 %/yr for BWT66(715)-G12 | | Dimensions | 1903x1134x35 mm | 2384x1303x35 mm | 1903x1134x35 mm vs 2384x1303x35 mm | ## Every compared parameter | Parameter | BG60(450) | BWT66(715)-G12 | | --- | --- | --- | | Rated power | 450 Wp | 715 Wp | | Module efficiency | 20.85 % | 23.00 % | | Power density | 208.5 Wp/m² | 230.2 Wp/m² | | Open-circuit voltage | 41.46 V | 46.68 V | | Voltage at max power | 34.62 V | 40.35 V | | Short-circuit current | 13.47 A | 18.92 A | | Current at max power | 13.01 A | 17.72 A | | Temperature coefficient | -0.330 %/°C | -0.290 %/°C | | Dimensions | 1903x1134x35 mm | 2384x1303x35 mm | | Module area | 2.158 m² | 3.106 m² | | Weight | 26.3 kg | 33.9 kg | | Weight per kWp | 58.4 kg/kWp | 47.4 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.45 %/yr | 0.40 %/yr | | Cell technology | PERC | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 120 | 132 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, BG60(450):** 14,819 kWh - **Cumulative output, BWT66(715)-G12:** 23,990 kWh - **Gap:** 9,171 kWh ## Output when hot | Condition | Cell temperature | BG60(450) | BWT66(715)-G12 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 450 W | 715 W | 100.0% of rated power | | Cool, bright day | 40 °C | 428 W | 684 W | 95.0% of rated power | | Typical summer roof | 55 °C | 405 W | 653 W | 90.1% of rated power | | Hot roof | 70 °C | 383 W | 622 W | 85.2% of rated power | ## Against the whole database | Measure | BG60(450) | BWT66(715)-G12 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #10,362 | #1,919 | 14,005 | BWT66(715)-G12 leads by 8,443 places | | Power density | #10,339 | #2,018 | 14,005 | BWT66(715)-G12 leads by 8,321 places | | Heat behaviour | #8,545 | #2,165 | 14,005 | BWT66(715)-G12 leads by 6,380 places | | Weight | #11,731 | #1,670 | 14,005 | BWT66(715)-G12 leads by 10,061 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #10,128 | #434 | 14,005 | BWT66(715)-G12 leads by 9,694 places | ## Questions ### Which panel is better: Sunova TS-BG60(450) or Sunova TS-BWT66(715)-G12? According to our database: **Sunova TS-BWT66(715)-G12** has higher module efficiency (**23.00%** vs **20.85%**); **Sunova TS-BWT66(715)-G12** tolerates heat better (temp coeff **-0.290%/°C** vs **-0.330%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Sunova TS-BG60(450) and Sunova TS-BWT66(715)-G12? **Sunova TS-BG60(450)** has a module efficiency of **20.85%**, while **Sunova TS-BWT66(715)-G12** is **23.00%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Sunova TS-BG60(450) use vs Sunova TS-BWT66(715)-G12? **Sunova TS-BG60(450)** uses **PERC** cells; **Sunova TS-BWT66(715)-G12** uses **TOPCon**. 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 Sunova TS-BG60(450) and Sunova TS-BWT66(715)-G12? **Sunova TS-BG60(450)** has a **30 years** power warranty; **Sunova TS-BWT66(715)-G12** 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 Sunova TS-BG60(450) and Sunova TS-BWT66(715)-G12 bifacial panels? Both **Sunova TS-BG60(450)** and **Sunova TS-BWT66(715)-G12** 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 - [Sunova TS-BG60(450) vs Sunova TS-BG60(460)](https://comparepv.com/compare/sunova-ts-bg60-450/sunova-ts-bg60-460) - 3 differences, the largest is module efficiency - [Sunova TS-BG60(450) vs Sunova TS-BG60(455)](https://comparepv.com/compare/sunova-ts-bg60-450/sunova-ts-bg60-455) - One difference: module efficiency - [Sunova TS-BG60(450) vs Sunova TS-BG60(445)](https://comparepv.com/compare/sunova-ts-bg60-450/sunova-ts-bg60-445) - One difference: module efficiency - [Sunova TS-BWT66(715)-G12 vs Sunova TS-BGT66(720)-G12](https://comparepv.com/compare/sunova-ts-bwt66-715-g12/sunova-ts-bgt66-720-g12) - 6 differences, the largest is weight - [Sunova TS-BWT66(715)-G12 vs Sunova TS-BWT66(720)-G12](https://comparepv.com/compare/sunova-ts-bwt66-715-g12/sunova-ts-bwt66-720-g12) - One difference: module efficiency - [Sunova TS-BWT66(715)-G12 vs Sunova TS-BGT66(715)-G12](https://comparepv.com/compare/sunova-ts-bwt66-715-g12/sunova-ts-bgt66-715-g12) - 5 differences, the largest is weight --- Source: https://comparepv.com/compare/sunova-ts-bg60-450/sunova-ts-bwt66-715-g12 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.