--- title: "Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) vs Tongwei TWMNH-66HD655 - Solar Panel Comparison | ComparePV" description: "Compare Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) vs Tongwei TWMNH-66HD655 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/jinko-solar-jkm650-670n-66ql6-bdv-f2-eu-670w/tongwei-solar-twmnh-66hd655" image: "https://comparepv.com/og/compare/panels/jinko-solar-jkm650-670n-66ql6-bdv-f2-eu-670w/tongwei-solar-twmnh-66hd655.png" updated: 2026-09-11 --- # Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) vs Tongwei TWMNH-66HD655 JKM650-670N-66QL6-BDV-F2-EU (670W) leads on the differences that matter The largest is module efficiency: 0.60 pp more efficient. 11 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 | [Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W)](https://comparepv.com/panel/jinko-solar-jkm650-670n-66ql6-bdv-f2-eu-670w) | [Tongwei TWMNH-66HD655](https://comparepv.com/panel/tongwei-solar-twmnh-66hd655) | | Manufacturer | Jinko Solar | Tongwei | | Power | 670 Wp | 655 Wp | | Efficiency | 24.80 % | 24.20 % | | Technology | TOPCon | N-type | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | JKM650-670N-66QL6-BDV-F2-EU (670W) | TWMNH-66HD655 | Difference | | --- | --- | --- | --- | | Module efficiency | 24.80 % | 24.20 % | +0.60 pp for JKM650-670N-66QL6-BDV-F2-EU (670W) | | Temperature coefficient | -0.260 %/°C | -0.280 %/°C | +0.020 %/°C for JKM650-670N-66QL6-BDV-F2-EU (670W) | | Power density | 248.0 Wp/m² | 242.5 Wp/m² | +5.6 Wp/m² for JKM650-670N-66QL6-BDV-F2-EU (670W) | | Rated power | 670 Wp | 655 Wp | +15 W for JKM650-670N-66QL6-BDV-F2-EU (670W) | | Cell technology | TOPCon | N-type | TOPCon vs N-type | | Annual degradation | 0.35 %/yr | 0.40 %/yr | -0.05 %/yr for JKM650-670N-66QL6-BDV-F2-EU (670W) | | Voltage at max power | 43.09 V | 41.78 V | 1.31 V apart | ## Every compared parameter | Parameter | JKM650-670N-66QL6-BDV-F2-EU (670W) | TWMNH-66HD655 | | --- | --- | --- | | Rated power | 670 Wp | 655 Wp | | Module efficiency | 24.80 % | 24.20 % | | Power density | 248.0 Wp/m² | 242.5 Wp/m² | | Open-circuit voltage | 50.98 V | 50.15 V | | Voltage at max power | 43.09 V | 41.78 V | | Short-circuit current | 16.22 A | 16.52 A | | Current at max power | 15.55 A | 15.68 A | | Temperature coefficient | -0.260 %/°C | -0.280 %/°C | | Dimensions | 2382x1134x30 mm | 2382x1134x30 mm | | Module area | 2.701 m² | 2.701 m² | | Weight | 32.5 kg | 32.2 kg | | Weight per kWp | 48.5 kg/kWp | 49.2 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.35 %/yr | 0.40 %/yr | | Cell technology | TOPCon | N-type | | Cell type | Monocrystalline | Monocrystalline | | Cell count | - | 132 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, JKM650-670N-66QL6-BDV-F2-EU (670W):** 22,655 kWh - **Cumulative output, TWMNH-66HD655:** 21,977 kWh - **Gap:** 678 kWh ## Output when hot | Condition | Cell temperature | JKM650-670N-66QL6-BDV-F2-EU (670W) | TWMNH-66HD655 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 670 W | 655 W | 100.0% of rated power | | Cool, bright day | 40 °C | 644 W | 627 W | 95.8% of rated power | | Typical summer roof | 55 °C | 618 W | 600 W | 91.6% of rated power | | Hot roof | 70 °C | 592 W | 572 W | 87.4% of rated power | ## Against the whole database | Measure | JKM650-670N-66QL6-BDV-F2-EU (670W) | TWMNH-66HD655 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #13 | #206 | 14,129 | JKM650-670N-66QL6-BDV-F2-EU (670W) leads by 193 places | | Power density | #15 | #192 | 14,129 | JKM650-670N-66QL6-BDV-F2-EU (670W) leads by 177 places | | Heat behaviour | #515 | #1,347 | 14,129 | JKM650-670N-66QL6-BDV-F2-EU (670W) leads by 832 places | | Weight | #2,326 | #2,782 | 14,129 | JKM650-670N-66QL6-BDV-F2-EU (670W) leads by 456 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #493 | #1,006 | 14,129 | JKM650-670N-66QL6-BDV-F2-EU (670W) leads by 513 places | ## Questions ### Which panel is better: Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) or Tongwei TWMNH-66HD655? According to our database: **Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (**670 W**)** has higher module efficiency (**24.80%** vs **24.20%**); **Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (**670 W**)** tolerates heat better (temp coeff **-0.260%/°C** vs **-0.280%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) and Tongwei TWMNH-66HD655? **Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (**670 W**)** has a module efficiency of **24.80%**, while **Tongwei TWMNH-66HD655** is **24.20%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) use vs Tongwei TWMNH-66HD655? **Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (**670 W**)** uses **TOPCon** cells; **Tongwei TWMNH-66HD655** 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 Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) and Tongwei TWMNH-66HD655? **Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (**670 W**)** has a **30 years** power warranty; **Tongwei TWMNH-66HD655** 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 Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) and Tongwei TWMNH-66HD655 bifacial panels? Both **Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (**670 W**)** and **Tongwei TWMNH-66HD655** 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 - [Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) vs Jinko Solar JKM650-670N-66QL6-BDV (670W class)](https://comparepv.com/compare/jinko-solar-jkm650-670n-66ql6-bdv-f2-eu-670w/jinko-solar-jkm650-670n-66ql6-bdv-670w-class) - The same specification on paper - [Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) vs Jinko Solar JKM645-670N-66QL6-BDV-L](https://comparepv.com/compare/jinko-solar-jkm650-670n-66ql6-bdv-f2-eu-670w/jinko-solar-jkm645-670n-66ql6-bdv-l) - One difference: cell technology - [Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) vs Jinko Solar JKM670N-66QL6-BDV-F4-EU](https://comparepv.com/compare/jinko-solar-jkm650-670n-66ql6-bdv-f2-eu-670w/jinko-solar-jkm670n-66ql6-bdv-f4-eu) - One difference: cell technology - [Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) vs Jinko Solar JKM650-670N-66QL6-BDV (665W class)](https://comparepv.com/compare/jinko-solar-jkm650-670n-66ql6-bdv-f2-eu-670w/jinko-solar-jkm650-670n-66ql6-bdv-665w-class) - The same specification on paper - [Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) vs Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (665W)](https://comparepv.com/compare/jinko-solar-jkm650-670n-66ql6-bdv-f2-eu-670w/jinko-solar-jkm650-670n-66ql6-bdv-f2-eu-665w) - The same specification on paper - [Jinko Solar JKM650-670N-66QL6-BDV-F2-EU (670W) vs Jinko Solar JKM665N-66QL6-BDV-AntiGlare-F1-EU](https://comparepv.com/compare/jinko-solar-jkm650-670n-66ql6-bdv-f2-eu-670w/jinko-solar-jkm665n-66ql6-bdv-antiglare-f1-eu) - One difference: cell technology --- Source: https://comparepv.com/compare/jinko-solar-jkm650-670n-66ql6-bdv-f2-eu-670w/tongwei-solar-twmnh-66hd655 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.