--- title: "Renesola RS5J-615NBG-E1 vs Renesola RS5J-625NBG-E1 - Solar Panel Comparison | ComparePV" description: "Compare Renesola RS5J-615NBG-E1 vs Renesola RS5J-625NBG-E1 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/renesola-rs5j-615nbg-e1/renesola-rs5j-625nbg-e1" image: "https://comparepv.com/og/compare/panels/renesola-rs5j-615nbg-e1/renesola-rs5j-625nbg-e1.png" updated: 2026-09-11 --- # Renesola RS5J-615NBG-E1 vs Renesola RS5J-625NBG-E1 625NBG-E1 leads on the differences that matter The largest is module efficiency: 0.37 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Renesola RS5J-615NBG-E1](https://comparepv.com/panel/renesola-rs5j-615nbg-e1) | [Renesola RS5J-625NBG-E1](https://comparepv.com/panel/renesola-rs5j-625nbg-e1) | | Manufacturer | Renesola | Renesola | | Power | 615 Wp | 625 Wp | | Efficiency | 22.77 % | 23.14 % | | Technology | N-type | N-type | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 615NBG-E1 | 625NBG-E1 | Difference | | --- | --- | --- | --- | | Module efficiency | 22.77 % | 23.14 % | +0.37 pp for 625NBG-E1 | | Power density | 227.7 Wp/m² | 231.4 Wp/m² | +3.7 Wp/m² for 625NBG-E1 | | Rated power | 615 Wp | 625 Wp | +10 W for 625NBG-E1 | ## Every compared parameter | Parameter | 615NBG-E1 | 625NBG-E1 | | --- | --- | --- | | Rated power | 615 Wp | 625 Wp | | Module efficiency | 22.77 % | 23.14 % | | Power density | 227.7 Wp/m² | 231.4 Wp/m² | | Open-circuit voltage | 48.88 V | 49.28 V | | Voltage at max power | 40.60 V | 40.88 V | | Short-circuit current | 16.02 A | 16.14 A | | Current at max power | 15.15 A | 15.29 A | | Temperature coefficient | -0.300 %/°C | -0.300 %/°C | | Dimensions | 2382x1134x30 mm | 2382x1134x30 mm | | Module area | 2.701 m² | 2.701 m² | | Weight | 32.4 kg | 32.4 kg | | Weight per kWp | 52.7 kg/kWp | 51.8 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 | 132 | 132 | | 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, 615NBG-E1:** 20,634 kWh - **Cumulative output, 625NBG-E1:** 20,970 kWh - **Gap:** 336 kWh ## Output when hot | Condition | Cell temperature | 615NBG-E1 | 625NBG-E1 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 615 W | 625 W | 100.0% of rated power | | Cool, bright day | 40 °C | 587 W | 597 W | 95.5% of rated power | | Typical summer roof | 55 °C | 560 W | 569 W | 91.0% of rated power | | Hot roof | 70 °C | 532 W | 541 W | 86.5% of rated power | ## Against the whole database | Measure | 615NBG-E1 | 625NBG-E1 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #3,073 | #1,509 | 14,005 | 625NBG-E1 leads by 1,564 places | | Power density | #3,077 | #1,513 | 14,005 | 625NBG-E1 leads by 1,564 places | | Heat behaviour | #6,093 | #6,093 | 14,005 | Tied - the same position in the database | | Weight | #6,311 | #5,218 | 14,005 | 625NBG-E1 leads by 1,093 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #2,365 | #1,833 | 14,005 | 625NBG-E1 leads by 532 places | ## Questions ### Which panel is better: Renesola RS5J-615NBG-E1 or Renesola RS5J-625NBG-E1? According to our database: **Renesola RS5J-625NBG-E1** has higher module efficiency (**23.14%** vs **22.77%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Renesola RS5J-615NBG-E1 and Renesola RS5J-625NBG-E1? **Renesola RS5J-615NBG-E1** has a module efficiency of **22.77%**, while **Renesola RS5J-625NBG-E1** is **23.14%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Renesola RS5J-615NBG-E1 use vs Renesola RS5J-625NBG-E1? **Renesola RS5J-615NBG-E1** uses **N-type** cells; **Renesola RS5J-625NBG-E1** 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 Renesola RS5J-615NBG-E1 and Renesola RS5J-625NBG-E1? **Renesola RS5J-615NBG-E1** has a **30 years** power warranty; **Renesola RS5J-625NBG-E1** 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 Renesola RS5J-615NBG-E1 and Renesola RS5J-625NBG-E1 bifacial panels? Both **Renesola RS5J-615NBG-E1** and **Renesola RS5J-625NBG-E1** 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 - [Renesola RS5J-615NBG-E1 vs Renesola RS5J-635NBG-E1](https://comparepv.com/compare/renesola-rs5j-615nbg-e1/renesola-rs5j-635nbg-e1) - 3 differences, the largest is module efficiency - [Renesola RS5J-615NBG-E1 vs Renesola RS5J-630NBG-E1](https://comparepv.com/compare/renesola-rs5j-615nbg-e1/renesola-rs5j-630nbg-e1) - 3 differences, the largest is module efficiency - [Renesola RS5J-615NBG-E1 vs Renesola RS5J-620NBG-E1](https://comparepv.com/compare/renesola-rs5j-615nbg-e1/renesola-rs5j-620nbg-e1) - The same specification on paper - [Renesola RS5J-615NBG-E1 vs Renesola RS9-720NBG-E1](https://comparepv.com/compare/renesola-rs5j-615nbg-e1/renesola-rs9-720nbg-e1) - 9 differences, the largest is rated power - [Renesola RS5J-615NBG-E1 vs Renesola RS9-715NBG-E1](https://comparepv.com/compare/renesola-rs5j-615nbg-e1/renesola-rs9-715nbg-e1) - 8 differences, the largest is rated power - [Renesola RS5J-615NBG-E1 vs Renesola RS9-710NBG-E1](https://comparepv.com/compare/renesola-rs5j-615nbg-e1/renesola-rs9-710nbg-e1) - 7 differences, the largest is rated power --- Source: https://comparepv.com/compare/renesola-rs5j-615nbg-e1/renesola-rs5j-625nbg-e1 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.