--- title: "Goldi Solar GS10-M156-WF-585 vs Goldi Solar GS10-M156-WF-590 - Solar Panel Comparison | ComparePV" description: "Compare Goldi Solar GS10-M156-WF-585 vs Goldi Solar GS10-M156-WF-590 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/goldi-solar-gs10-m156-wf-585/goldi-solar-gs10-m156-wf-590" updated: 2026-09-11 --- # Goldi Solar GS10-M156-WF-585 vs Goldi Solar GS10-M156-WF-590 590 leads on the differences that matter The largest is module efficiency: 0.20 pp more efficient. 18 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Goldi Solar GS10-M156-WF-585](https://comparepv.com/panel/goldi-solar-gs10-m156-wf-585) | [Goldi Solar GS10-M156-WF-590](https://comparepv.com/panel/goldi-solar-gs10-m156-wf-590) | | Manufacturer | Goldi Solar | Goldi Solar | | Power | 585 Wp | 590 Wp | | Efficiency | 20.90 % | 21.10 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 585 | 590 | Difference | | --- | --- | --- | --- | | Module efficiency | 20.90 % | 21.10 % | +0.20 pp for 590 | ## Every compared parameter | Parameter | 585 | 590 | | --- | --- | --- | | Rated power | 585 Wp | 590 Wp | | Module efficiency | 20.90 % | 21.10 % | | Power density | 209.5 Wp/m² | 211.3 Wp/m² | | Open-circuit voltage | 53.73 V | 53.87 V | | Voltage at max power | 45.11 V | 45.25 V | | Short-circuit current | 13.86 A | 13.93 A | | Current at max power | 12.97 A | 13.04 A | | Temperature coefficient | -0.340 %/°C | -0.340 %/°C | | Dimensions | 2465x1133x35 mm | 2465x1133x35 mm | | Module area | 2.793 m² | 2.793 m² | | Weight | 31.5 kg | 31.5 kg | | Weight per kWp | 53.8 kg/kWp | 53.4 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 25 yrs | 25 yrs | | Annual degradation | 0.55 %/yr | 0.55 %/yr | | Cell technology | PERC | PERC | | Cell type | Polycrystalline | Polycrystalline | | Cell count | 156 | 156 | | 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 (-0.340 %/°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, 585:** 18,959 kWh - **Cumulative output, 590:** 19,121 kWh - **Gap:** 162 kWh ## Output when hot | Condition | Cell temperature | 585 | 590 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 585 W | 590 W | 100.0% of rated power | | Cool, bright day | 40 °C | 555 W | 560 W | 94.9% of rated power | | Typical summer roof | 55 °C | 525 W | 530 W | 89.8% of rated power | | Hot roof | 70 °C | 495 W | 500 W | 84.7% of rated power | ## Against the whole database | Measure | 585 | 590 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #10,072 | #9,297 | 14,005 | 590 leads by 775 places | | Power density | #9,957 | #9,247 | 14,005 | 590 leads by 710 places | | Heat behaviour | #8,778 | #8,778 | 14,005 | Tied - the same position in the database | | Weight | #7,897 | #7,293 | 14,005 | 590 leads by 604 places | | Warranty | #9,798 | #9,798 | 14,005 | Tied - the same position in the database | | Overall | #7,235 | #6,818 | 14,005 | 590 leads by 417 places | ## Questions ### Which panel is better: Goldi Solar GS10-M156-WF-585 or Goldi Solar GS10-M156-WF-590? According to our database: **Goldi Solar GS10-M156-WF-590** has higher module efficiency (**21.10%** vs **20.90%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Goldi Solar GS10-M156-WF-585 and Goldi Solar GS10-M156-WF-590? **Goldi Solar GS10-M156-WF-585** has a module efficiency of **20.90%**, while **Goldi Solar GS10-M156-WF-590** is **21.10%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Goldi Solar GS10-M156-WF-585 use vs Goldi Solar GS10-M156-WF-590? **Goldi Solar GS10-M156-WF-585** uses **PERC** cells; **Goldi Solar GS10-M156-WF-590** uses **PERC**. 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 Goldi Solar GS10-M156-WF-585 and Goldi Solar GS10-M156-WF-590? **Goldi Solar GS10-M156-WF-585** has a **25 years** power warranty; **Goldi Solar GS10-M156-WF-590** 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 - [Goldi Solar GS10-M156-WF-585 vs Goldi Solar GS10-M156-WF-600](https://comparepv.com/compare/goldi-solar-gs10-m156-wf-585/goldi-solar-gs10-m156-wf-600) - 3 differences, the largest is module efficiency - [Goldi Solar GS10-M156-WF-585 vs Goldi Solar GS10-M156-WF-595](https://comparepv.com/compare/goldi-solar-gs10-m156-wf-585/goldi-solar-gs10-m156-wf-595) - 3 differences, the largest is module efficiency - [Goldi Solar GS10-M156-WF-585 vs Goldi Solar GS10-T144-GF-595Wp](https://comparepv.com/compare/goldi-solar-gs10-m156-wf-585/goldi-solar-gs10-t144-gf-595wp) - 12 differences, the largest is module efficiency - [Goldi Solar GS10-M156-WF-585 vs Goldi Solar GS10-T144-GF-590Wp](https://comparepv.com/compare/goldi-solar-gs10-m156-wf-585/goldi-solar-gs10-t144-gf-590wp) - 11 differences, the largest is module efficiency - [Goldi Solar GS10-M156-WF-585 vs Goldi Solar GS10-T144-GF-585Wp](https://comparepv.com/compare/goldi-solar-gs10-m156-wf-585/goldi-solar-gs10-t144-gf-585wp) - 11 differences, the largest is module efficiency - [Goldi Solar GS10-M156-WF-585 vs Goldi Solar GS10-M156-WF-580](https://comparepv.com/compare/goldi-solar-gs10-m156-wf-585/goldi-solar-gs10-m156-wf-580) - One difference: module efficiency --- Source: https://comparepv.com/compare/goldi-solar-gs10-m156-wf-585/goldi-solar-gs10-m156-wf-590 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.