--- title: "Sharp GSD8K66H-710WT vs Sharp GSD8K66H-725WT - Solar Panel Comparison | ComparePV" description: "Compare Sharp GSD8K66H-710WT vs Sharp GSD8K66H-725WT side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/sharp-gsd8k66h-710wt/sharp-gsd8k66h-725wt" updated: 2026-09-11 --- # Sharp GSD8K66H-710WT vs Sharp GSD8K66H-725WT 725WT leads on the differences that matter The largest is module efficiency: 0.48 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Sharp GSD8K66H-710WT](https://comparepv.com/panel/sharp-gsd8k66h-710wt) | [Sharp GSD8K66H-725WT](https://comparepv.com/panel/sharp-gsd8k66h-725wt) | | Manufacturer | Sharp | Sharp | | Power | 710 Wp | 725 Wp | | Efficiency | 22.86 % | 23.34 % | | Technology | HJT | HJT | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 710WT | 725WT | Difference | | --- | --- | --- | --- | | Module efficiency | 22.86 % | 23.34 % | +0.48 pp for 725WT | | Power density | 228.6 Wp/m² | 233.4 Wp/m² | +4.8 Wp/m² for 725WT | | Rated power | 710 Wp | 725 Wp | +15 W for 725WT | ## Every compared parameter | Parameter | 710WT | 725WT | | --- | --- | --- | | Rated power | 710 Wp | 725 Wp | | Module efficiency | 22.86 % | 23.34 % | | Power density | 228.6 Wp/m² | 233.4 Wp/m² | | Open-circuit voltage | 50.50 V | 51.10 V | | Voltage at max power | 42.60 V | 43.20 V | | Short-circuit current | 17.52 A | 17.64 A | | Current at max power | 16.67 A | 16.79 A | | Temperature coefficient | -0.260 %/°C | -0.260 %/°C | | Dimensions | 2384x1303x35 mm | 2384x1303x35 mm | | Module area | 3.106 m² | 3.106 m² | | Weight | 39.0 kg | 39.0 kg | | Weight per kWp | 54.9 kg/kWp | 53.8 kg/kWp | | Product warranty | 25 yrs | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.35 %/yr | 0.35 %/yr | | Cell technology | HJT | HJT | | 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 (-0.260 %/°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, 710WT:** 24,007 kWh - **Cumulative output, 725WT:** 24,514 kWh - **Gap:** 507 kWh ## Output when hot | Condition | Cell temperature | 710WT | 725WT | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 710 W | 725 W | 100.0% of rated power | | Cool, bright day | 40 °C | 682 W | 697 W | 96.1% of rated power | | Typical summer roof | 55 °C | 655 W | 668 W | 92.2% of rated power | | Hot roof | 70 °C | 627 W | 640 W | 88.3% of rated power | ## Against the whole database | Measure | 710WT | 725WT | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #2,536 | #943 | 14,005 | 725WT leads by 1,593 places | | Power density | #2,474 | #936 | 14,005 | 725WT leads by 1,538 places | | Heat behaviour | #511 | #511 | 14,005 | Tied - the same position in the database | | Weight | #9,311 | #7,866 | 14,005 | 725WT leads by 1,445 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #142 | #57 | 14,005 | 725WT leads by 85 places | ## Questions ### Which panel is better: Sharp GSD8K66H-710WT or Sharp GSD8K66H-725WT? According to our database: **Sharp GSD8K66H-725WT** has higher module efficiency (**23.34%** vs **22.86%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Sharp GSD8K66H-710WT and Sharp GSD8K66H-725WT? **Sharp GSD8K66H-710WT** has a module efficiency of **22.86%**, while **Sharp GSD8K66H-725WT** is **23.34%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Sharp GSD8K66H-710WT use vs Sharp GSD8K66H-725WT? **Sharp GSD8K66H-710WT** uses **HJT** cells; **Sharp GSD8K66H-725WT** uses **HJT**. 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 Sharp GSD8K66H-710WT and Sharp GSD8K66H-725WT? **Sharp GSD8K66H-710WT** has a **30 years** power warranty; **Sharp GSD8K66H-725WT** 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 Sharp GSD8K66H-710WT and Sharp GSD8K66H-725WT bifacial panels? Both **Sharp GSD8K66H-710WT** and **Sharp GSD8K66H-725WT** 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 - [Sharp GSD8K66H-710WT vs Sharp GSD8K66H-740WT](https://comparepv.com/compare/sharp-gsd8k66h-710wt/sharp-gsd8k66h-740wt) - 6 differences, the largest is module efficiency - [Sharp GSD8K66H-710WT vs Sharp GSD8K66H-735WT](https://comparepv.com/compare/sharp-gsd8k66h-710wt/sharp-gsd8k66h-735wt) - 5 differences, the largest is module efficiency - [Sharp GSD8K66H-710WT vs Sharp GSD8K66H-730WT](https://comparepv.com/compare/sharp-gsd8k66h-710wt/sharp-gsd8k66h-730wt) - 3 differences, the largest is module efficiency - [Sharp GSD8K66H-710WT vs Sharp GSD8K66H-720WT](https://comparepv.com/compare/sharp-gsd8k66h-710wt/sharp-gsd8k66h-720wt) - 3 differences, the largest is module efficiency - [Sharp GSD8K66H-710WT vs Sharp GSD8K66H-715WT](https://comparepv.com/compare/sharp-gsd8k66h-710wt/sharp-gsd8k66h-715wt) - The same specification on paper - [Sharp GSD8K66H-710WT vs Sharp NB-JD580](https://comparepv.com/compare/sharp-gsd8k66h-710wt/sharp-nb-jd580) - 12 differences, the largest is temperature coefficient --- Source: https://comparepv.com/compare/sharp-gsd8k66h-710wt/sharp-gsd8k66h-725wt 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.