--- title: "Tongwei TWMNH-48HW470 vs Tongwei TWMNH-48HW475 - Solar Panel Comparison | ComparePV" description: "Compare Tongwei TWMNH-48HW470 vs Tongwei TWMNH-48HW475 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/tongwei-solar-twmnh-48hw470/tongwei-solar-twmnh-48hw475" updated: 2026-09-11 --- # Tongwei TWMNH-48HW470 vs Tongwei TWMNH-48HW475 48HW475 leads on the differences that matter The largest is module efficiency: 0.30 pp more efficient. 18 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Tongwei TWMNH-48HW470](https://comparepv.com/panel/tongwei-solar-twmnh-48hw470) | [Tongwei TWMNH-48HW475](https://comparepv.com/panel/tongwei-solar-twmnh-48hw475) | | Manufacturer | Tongwei | Tongwei | | Power | 470 Wp | 475 Wp | | Efficiency | 23.50 % | 23.80 % | | Technology | N-type | N-type | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 48HW470 | 48HW475 | Difference | | --- | --- | --- | --- | | Module efficiency | 23.50 % | 23.80 % | +0.30 pp for 48HW475 | ## Every compared parameter | Parameter | 48HW470 | 48HW475 | | --- | --- | --- | | Rated power | 470 Wp | 475 Wp | | Module efficiency | 23.50 % | 23.80 % | | Power density | 235.2 Wp/m² | 237.7 Wp/m² | | Open-circuit voltage | 36.55 V | 36.70 V | | Voltage at max power | 30.80 V | 31.05 V | | Short-circuit current | 15.95 A | 15.97 A | | Current at max power | 15.26 A | 15.30 A | | Temperature coefficient | -0.280 %/°C | -0.280 %/°C | | Dimensions | 1762x1134x30 mm | 1762x1134x30 mm | | Module area | 1.998 m² | 1.998 m² | | Weight | 23.7 kg | 23.7 kg | | Weight per kWp | 50.4 kg/kWp | 49.9 kg/kWp | | Product warranty | 15 yrs | 15 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | N-type | N-type | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 96 | 96 | | Bifacial | No | No | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.280 %/°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, 48HW470:** 15,769 kWh - **Cumulative output, 48HW475:** 15,937 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | 48HW470 | 48HW475 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 470 W | 475 W | 100.0% of rated power | | Cool, bright day | 40 °C | 450 W | 455 W | 95.8% of rated power | | Typical summer roof | 55 °C | 431 W | 435 W | 91.6% of rated power | | Hot roof | 70 °C | 411 W | 415 W | 87.4% of rated power | ## Against the whole database | Measure | 48HW470 | 48HW475 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #716 | #433 | 14,005 | 48HW475 leads by 283 places | | Power density | #674 | #467 | 14,005 | 48HW475 leads by 207 places | | Heat behaviour | #1,309 | #1,309 | 14,005 | Tied - the same position in the database | | Weight | #3,804 | #3,274 | 14,005 | 48HW475 leads by 530 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #6,415 | #5,862 | 14,005 | 48HW475 leads by 553 places | ## Questions ### Which panel is better: Tongwei TWMNH-48HW470 or Tongwei TWMNH-48HW475? According to our database: **Tongwei TWMNH-48HW475** has higher module efficiency (**23.80%** vs **23.50%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Tongwei TWMNH-48HW470 and Tongwei TWMNH-48HW475? **Tongwei TWMNH-48HW470** has a module efficiency of **23.50%**, while **Tongwei TWMNH-48HW475** is **23.80%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Tongwei TWMNH-48HW470 use vs Tongwei TWMNH-48HW475? **Tongwei TWMNH-48HW470** uses **N-type** cells; **Tongwei TWMNH-48HW475** 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 Tongwei TWMNH-48HW470 and Tongwei TWMNH-48HW475? **Tongwei TWMNH-48HW470** has a **30 years** power warranty; **Tongwei TWMNH-48HW475** 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. ## Related comparisons - [Tongwei TWMNH-48HW470 vs Tongwei TWMNH-48HW465](https://comparepv.com/compare/tongwei-solar-twmnh-48hw470/tongwei-solar-twmnh-48hw465) - One difference: module efficiency - [Tongwei TWMNH-48HW470 vs Tongwei TWMNH-48HW460](https://comparepv.com/compare/tongwei-solar-twmnh-48hw470/tongwei-solar-twmnh-48hw460) - 3 differences, the largest is module efficiency - [Tongwei TWMNH-48HW470 vs Tongwei TWMNH-48HW455](https://comparepv.com/compare/tongwei-solar-twmnh-48hw470/tongwei-solar-twmnh-48hw455) - 3 differences, the largest is module efficiency - [Tongwei TWMNH-48HW470 vs Tongwei TWMNF-66HD750](https://comparepv.com/compare/tongwei-solar-twmnh-48hw470/tongwei-solar-twmnf-66hd750) - 14 differences, the largest is rated power - [Tongwei TWMNH-48HW470 vs Tongwei TWMNF-66HD745](https://comparepv.com/compare/tongwei-solar-twmnh-48hw470/tongwei-solar-twmnf-66hd745) - 14 differences, the largest is rated power - [Tongwei TWMNH-48HW470 vs Tongwei TWMNF-66HD740](https://comparepv.com/compare/tongwei-solar-twmnh-48hw470/tongwei-solar-twmnf-66hd740) - 13 differences, the largest is rated power --- Source: https://comparepv.com/compare/tongwei-solar-twmnh-48hw470/tongwei-solar-twmnh-48hw475 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.