--- title: "BYD NLBK-36-590 vs BYD NLBK-36-600 - Solar Panel Comparison | ComparePV" description: "Compare BYD NLBK-36-590 vs BYD NLBK-36-600 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/byd-nlbk-36-590-1/byd-nlbk-36-600-1" updated: 2026-09-11 --- # BYD NLBK-36-590 vs BYD NLBK-36-600 600 leads on the differences that matter The largest is module efficiency: 0.39 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [BYD NLBK-36-590](https://comparepv.com/panel/byd-nlbk-36-590-1) | [BYD NLBK-36-600](https://comparepv.com/panel/byd-nlbk-36-600-1) | | Manufacturer | BYD | BYD | | Power | 590 Wp | 600 Wp | | Efficiency | 22.84 % | 23.23 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 590 | 600 | Difference | | --- | --- | --- | --- | | Module efficiency | 22.84 % | 23.23 % | +0.39 pp for 600 | | Power density | 228.4 Wp/m² | 232.3 Wp/m² | +3.9 Wp/m² for 600 | | Rated power | 590 Wp | 600 Wp | +10 W for 600 | ## Every compared parameter | Parameter | 590 | 600 | | --- | --- | --- | | Rated power | 590 Wp | 600 Wp | | Module efficiency | 22.84 % | 23.23 % | | Power density | 228.4 Wp/m² | 232.3 Wp/m² | | Open-circuit voltage | 51.28 V | 51.54 V | | Voltage at max power | 42.66 V | 42.96 V | | Short-circuit current | 14.63 A | 14.79 A | | Current at max power | 13.84 A | 13.98 A | | Temperature coefficient | -0.300 %/°C | -0.300 %/°C | | Dimensions | 2278x1134x30 mm | 2278x1134x30 mm | | Module area | 2.583 m² | 2.583 m² | | Weight | 32.0 kg | 32.0 kg | | Weight per kWp | 54.2 kg/kWp | 53.3 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.40 %/yr | 0.40 %/yr | | Cell technology | TOPCon | TOPCon | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 144 | 144 | | 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 (-0.300 %/°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, 590:** 19,796 kWh - **Cumulative output, 600:** 20,131 kWh - **Gap:** 335 kWh ## Output when hot | Condition | Cell temperature | 590 | 600 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 590 W | 600 W | 100.0% of rated power | | Cool, bright day | 40 °C | 563 W | 573 W | 95.5% of rated power | | Typical summer roof | 55 °C | 537 W | 546 W | 91.0% of rated power | | Hot roof | 70 °C | 510 W | 519 W | 86.5% of rated power | ## Against the whole database | Measure | 590 | 600 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #2,617 | #1,252 | 14,005 | 600 leads by 1,365 places | | Power density | #2,598 | #1,252 | 14,005 | 600 leads by 1,346 places | | Heat behaviour | #6,093 | #6,093 | 14,005 | Tied - the same position in the database | | Weight | #8,477 | #7,236 | 14,005 | 600 leads by 1,241 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #3,762 | #2,935 | 14,005 | 600 leads by 827 places | ## Questions ### Which panel is better: BYD NLBK-36-590 or BYD NLBK-36-600? According to our database: **BYD NLBK-36-600** has higher module efficiency (**23.23%** vs **22.84%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of BYD NLBK-36-590 and BYD NLBK-36-600? **BYD NLBK-36-590** has a module efficiency of **22.84%**, while **BYD NLBK-36-600** is **23.23%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does BYD NLBK-36-590 use vs BYD NLBK-36-600? **BYD NLBK-36-590** uses **TOPCon** cells; **BYD NLBK-36-600** 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 BYD NLBK-36-590 and BYD NLBK-36-600? **BYD NLBK-36-590** has a **30 years** power warranty; **BYD NLBK-36-600** 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 BYD NLBK-36-590 and BYD NLBK-36-600 bifacial panels? Both **BYD NLBK-36-590** and **BYD NLBK-36-600** 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 - [BYD NLBK-36-590 vs BYD NLBK-36 600](https://comparepv.com/compare/byd-nlbk-36-590-1/byd-nlbk-36-600) - 8 differences, the largest is temperature coefficient - [BYD NLBK-36-590 vs BYD NLBK-36-595](https://comparepv.com/compare/byd-nlbk-36-590-1/byd-nlbk-36-595-1) - The same specification on paper - [BYD NLBK-36-590 vs BYD NLBK-36 595](https://comparepv.com/compare/byd-nlbk-36-590-1/byd-nlbk-36-595) - 5 differences, the largest is temperature coefficient - [BYD NLBK-36-590 vs BYD NLBK-36 590](https://comparepv.com/compare/byd-nlbk-36-590-1/byd-nlbk-36-590) - 5 differences, the largest is temperature coefficient - [BYD NLBK-36-590 vs BYD NLBK-36-585](https://comparepv.com/compare/byd-nlbk-36-590-1/byd-nlbk-36-585-1) - The same specification on paper - [BYD NLBK-36-590 vs BYD NLBK-36 585](https://comparepv.com/compare/byd-nlbk-36-590-1/byd-nlbk-36-585) - 5 differences, the largest is temperature coefficient --- Source: https://comparepv.com/compare/byd-nlbk-36-590-1/byd-nlbk-36-600-1 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.