--- title: "Goldi Solar GS12-T132-GF-705 vs Goldi Solar GS12R-T132-GF-620 - Solar Panel Comparison | ComparePV" description: "Compare Goldi Solar GS12-T132-GF-705 vs Goldi Solar GS12R-T132-GF-620 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-gs12-t132-gf-705/goldi-solar-gs12r-t132-gf-620" updated: 2026-09-11 --- # Goldi Solar GS12-T132-GF-705 vs Goldi Solar GS12R-T132-GF-620 9 differences, and they point both ways The largest is rated power: 85 W more power. 10 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Goldi Solar GS12-T132-GF-705](https://comparepv.com/panel/goldi-solar-gs12-t132-gf-705) | [Goldi Solar GS12R-T132-GF-620](https://comparepv.com/panel/goldi-solar-gs12r-t132-gf-620) | | Manufacturer | Goldi Solar | Goldi Solar | | Power | 705 Wp | 620 Wp | | Efficiency | 22.69 % | 22.95 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | GS12-T132-GF-705 | GS12R-T132-GF-620 | Difference | | --- | --- | --- | --- | | Rated power | 705 Wp | 620 Wp | +85 W for GS12-T132-GF-705 | | Weight | 38.1 kg | 33.7 kg | -4.4 kg for GS12R-T132-GF-620 | | Temperature coefficient | -0.280 %/°C | -0.300 %/°C | +0.020 %/°C for GS12-T132-GF-705 | | Short-circuit current | 18.20 A | 15.92 A | 2.28 A apart | | Module area | 3.106 m² | 2.701 m² | 0.405 m² apart | | Module efficiency | 22.69 % | 22.95 % | +0.26 pp for GS12R-T132-GF-620 | | Current at max power | 17.20 A | 15.09 A | 2.11 A apart | | Open-circuit voltage | 47.78 V | 49.60 V | 1.82 V apart | | Dimensions | 2384x1303x33 mm | 2382x1134x30 mm | 2384x1303x33 mm vs 2382x1134x30 mm | ## Every compared parameter | Parameter | GS12-T132-GF-705 | GS12R-T132-GF-620 | | --- | --- | --- | | Rated power | 705 Wp | 620 Wp | | Module efficiency | 22.69 % | 22.95 % | | Power density | 227.0 Wp/m² | 229.5 Wp/m² | | Open-circuit voltage | 47.78 V | 49.60 V | | Voltage at max power | 41.00 V | 41.10 V | | Short-circuit current | 18.20 A | 15.92 A | | Current at max power | 17.20 A | 15.09 A | | Temperature coefficient | -0.280 %/°C | -0.300 %/°C | | Dimensions | 2384x1303x33 mm | 2382x1134x30 mm | | Module area | 3.106 m² | 2.701 m² | | Weight | 38.1 kg | 33.7 kg | | Weight per kWp | 54.0 kg/kWp | 54.4 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 | 132 | 132 | | Bifacial | Yes | Yes | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year - **Cumulative output, GS12-T132-GF-705:** 23,654 kWh - **Cumulative output, GS12R-T132-GF-620:** 20,802 kWh - **Gap:** 2,852 kWh ## Output when hot | Condition | Cell temperature | GS12-T132-GF-705 | GS12R-T132-GF-620 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 705 W | 620 W | 100.0% of rated power | | Cool, bright day | 40 °C | 675 W | 592 W | 95.5% of rated power | | Typical summer roof | 55 °C | 646 W | 564 W | 91.0% of rated power | | Hot roof | 70 °C | 616 W | 536 W | 86.5% of rated power | ## Against the whole database | Measure | GS12-T132-GF-705 | GS12R-T132-GF-620 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #3,496 | #2,268 | 14,005 | GS12R-T132-GF-620 leads by 1,228 places | | Power density | #3,361 | #2,191 | 14,005 | GS12R-T132-GF-620 leads by 1,170 places | | Heat behaviour | #1,309 | #6,093 | 14,005 | GS12-T132-GF-705 leads by 4,784 places | | Weight | #8,262 | #8,659 | 14,005 | GS12-T132-GF-705 leads by 397 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #1,052 | #2,594 | 14,005 | GS12-T132-GF-705 leads by 1,542 places | ## Questions ### Which panel is better: Goldi Solar GS12-T132-GF-705 or Goldi Solar GS12R-T132-GF-620? According to our database: **Goldi Solar GS12R-T132-GF-620** has higher module efficiency (**22.95%** vs **22.69%**); **Goldi Solar GS12-T132-GF-705** tolerates heat better (temp coeff **-0.280%/°C** vs **-0.300%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Goldi Solar GS12-T132-GF-705 and Goldi Solar GS12R-T132-GF-620? **Goldi Solar GS12-T132-GF-705** has a module efficiency of **22.69%**, while **Goldi Solar GS12R-T132-GF-620** is **22.95%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Goldi Solar GS12-T132-GF-705 use vs Goldi Solar GS12R-T132-GF-620? **Goldi Solar GS12-T132-GF-705** uses **TOPCon** cells; **Goldi Solar GS12R-T132-GF-620** 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 Goldi Solar GS12-T132-GF-705 and Goldi Solar GS12R-T132-GF-620? **Goldi Solar GS12-T132-GF-705** has a **30 years** power warranty; **Goldi Solar GS12R-T132-GF-620** 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 Goldi Solar GS12-T132-GF-705 and Goldi Solar GS12R-T132-GF-620 bifacial panels? Both **Goldi Solar GS12-T132-GF-705** and **Goldi Solar GS12R-T132-GF-620** 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 - [Goldi Solar GS12-T132-GF-705 vs Goldi Solar GS12-T132-GF-715](https://comparepv.com/compare/goldi-solar-gs12-t132-gf-705/goldi-solar-gs12-t132-gf-715) - 3 differences, the largest is module efficiency - [Goldi Solar GS12-T132-GF-705 vs Goldi Solar GS12-T132-GF-710](https://comparepv.com/compare/goldi-solar-gs12-t132-gf-705/goldi-solar-gs12-t132-gf-710) - The same specification on paper - [Goldi Solar GS12-T132-GF-705 vs Goldi Solar GS12-T132-GF-700](https://comparepv.com/compare/goldi-solar-gs12-t132-gf-705/goldi-solar-gs12-t132-gf-700) - The same specification on paper - [Goldi Solar GS12-T132-GF-705 vs Goldi Solar GS12-T132-GF-695](https://comparepv.com/compare/goldi-solar-gs12-t132-gf-705/goldi-solar-gs12-t132-gf-695) - 3 differences, the largest is module efficiency - [Goldi Solar GS12-T132-GF-705 vs Goldi Solar GS12-T132-GF-690](https://comparepv.com/compare/goldi-solar-gs12-t132-gf-705/goldi-solar-gs12-t132-gf-690) - 3 differences, the largest is module efficiency - [Goldi Solar GS12-T132-GF-705 vs Goldi Solar GS12R-T132-GF-615](https://comparepv.com/compare/goldi-solar-gs12-t132-gf-705/goldi-solar-gs12r-t132-gf-615) - 8 differences, the largest is rated power --- Source: https://comparepv.com/compare/goldi-solar-gs12-t132-gf-705/goldi-solar-gs12r-t132-gf-620 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.