--- title: "Waaree WS-335 vs Waaree WS-340 - Solar Panel Comparison | ComparePV" description: "Compare Waaree WS-335 vs Waaree WS-340 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/waaree-ws-335/waaree-ws-340" image: "https://comparepv.com/og/compare/panels/waaree-ws-335/waaree-ws-340.png" updated: 2026-09-11 --- # Waaree WS-335 vs Waaree WS-340 340 leads on the differences that matter The largest is module efficiency: 0.25 pp more efficient. 17 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 | [Waaree WS-335](https://comparepv.com/panel/waaree-ws-335) | [Waaree WS-340](https://comparepv.com/panel/waaree-ws-340) | | Manufacturer | Waaree | Waaree | | Power | 335 Wp | 340 Wp | | Efficiency | 16.82 % | 17.07 % | | Technology | | | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 335 | 340 | Difference | | --- | --- | --- | --- | | Module efficiency | 16.82 % | 17.07 % | +0.25 pp for 340 | ## Every compared parameter | Parameter | 335 | 340 | | --- | --- | --- | | Rated power | 335 Wp | 340 Wp | | Module efficiency | 16.82 % | 17.07 % | | Power density | 168.3 Wp/m² | 170.8 Wp/m² | | Open-circuit voltage | 46.80 V | 46.90 V | | Voltage at max power | 38.10 V | 38.25 V | | Short-circuit current | 9.30 A | 9.35 A | | Current at max power | 8.80 A | 8.90 A | | Temperature coefficient | -0.386 %/°C | -0.386 %/°C | | Dimensions | 1985x1003x35 mm | 1985x1003x35 mm | | Module area | 1.991 m² | 1.991 m² | | Weight | 21.5 kg | 21.5 kg | | Weight per kWp | 64.2 kg/kWp | 63.2 kg/kWp | | Product warranty | 10 yrs | 10 yrs | | Performance warranty | 25 yrs | 25 yrs | | Annual degradation | 0.70 %/yr | 0.70 %/yr | | Cell technology | - | - | | Cell type | Polycrystalline | Polycrystalline | | Cell count | 72 | 72 | | 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 (-0.386 %/°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, 335:** 10,534 kWh - **Cumulative output, 340:** 10,692 kWh - **Gap:** 158 kWh ## Output when hot | Condition | Cell temperature | 335 | 340 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 335 W | 340 W | 100.0% of rated power | | Cool, bright day | 40 °C | 316 W | 320 W | 94.2% of rated power | | Typical summer roof | 55 °C | 296 W | 301 W | 88.4% of rated power | | Hot roof | 70 °C | 277 W | 281 W | 82.6% of rated power | ## Against the whole database | Measure | 335 | 340 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #13,611 | #13,554 | 14,129 | 340 leads by 57 places | | Power density | #13,608 | #13,546 | 14,129 | 340 leads by 62 places | | Heat behaviour | #13,565 | #13,565 | 14,129 | Tied - the same position in the database | | Weight | #13,071 | #12,970 | 14,129 | 340 leads by 101 places | | Warranty | #9,912 | #9,912 | 14,129 | Tied - the same position in the database | | Overall | #13,529 | #13,475 | 14,129 | 340 leads by 54 places | ## Questions ### Which panel is better: Waaree WS-335 or Waaree WS-340? According to our database: **Waaree WS-340** has higher module efficiency (**17.07%** vs **16.82%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Waaree WS-335 and Waaree WS-340? **Waaree WS-335** has a module efficiency of **16.82%**, while **Waaree WS-340** is **17.07%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Waaree WS-335 use vs Waaree WS-340? **Waaree WS-335** uses Polycrystalline cells; **Waaree WS-340** uses Polycrystalline. 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 Waaree WS-335 and Waaree WS-340? **Waaree WS-335** has a **25 years** power warranty; **Waaree WS-340** has a **25 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 - [Waaree WS-335 vs Waaree WSM-395](https://comparepv.com/compare/waaree-ws-335/waaree-wsm-395) - 10 differences, the largest is module efficiency - [Waaree WS-335 vs Waaree WSM-390](https://comparepv.com/compare/waaree-ws-335/waaree-wsm-390) - 10 differences, the largest is module efficiency - [Waaree WS-335 vs Waaree WSM-385](https://comparepv.com/compare/waaree-ws-335/waaree-wsm-385) - 10 differences, the largest is module efficiency - [Waaree WS-335 vs Waaree WSM-380](https://comparepv.com/compare/waaree-ws-335/waaree-wsm-380) - 10 differences, the largest is module efficiency - [Waaree WS-335 vs Waaree WS-350](https://comparepv.com/compare/waaree-ws-335/waaree-ws-350) - 4 differences, the largest is module efficiency - [Waaree WS-335 vs Waaree WS-345](https://comparepv.com/compare/waaree-ws-335/waaree-ws-345) - 3 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/waaree-ws-335/waaree-ws-340 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.