--- title: "Tata Power Solar GSD7S72T-565WT vs Tata Power Solar GSD7S72T-570WT - Solar Panel Comparison | ComparePV" description: "Compare Tata Power Solar GSD7S72T-565WT vs Tata Power Solar GSD7S72T-570WT side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/tata-power-solar-gsd7s72t-565wt/tata-power-solar-gsd7s72t-570wt" updated: 2026-09-11 --- # Tata Power Solar GSD7S72T-565WT vs Tata Power Solar GSD7S72T-570WT 570WT 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 | [Tata Power Solar GSD7S72T-565WT](https://comparepv.com/panel/tata-power-solar-gsd7s72t-565wt) | [Tata Power Solar GSD7S72T-570WT](https://comparepv.com/panel/tata-power-solar-gsd7s72t-570wt) | | Manufacturer | Tata Power Solar | Tata Power Solar | | Power | 565 Wp | 570 Wp | | Efficiency | 21.87 % | 22.07 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 565WT | 570WT | Difference | | --- | --- | --- | --- | | Module efficiency | 21.87 % | 22.07 % | +0.20 pp for 570WT | ## Every compared parameter | Parameter | 565WT | 570WT | | --- | --- | --- | | Rated power | 565 Wp | 570 Wp | | Module efficiency | 21.87 % | 22.07 % | | Power density | 218.7 Wp/m² | 220.7 Wp/m² | | Open-circuit voltage | 50.60 V | 50.74 V | | Voltage at max power | 41.92 V | 42.07 V | | Short-circuit current | 14.23 A | 14.31 A | | Current at max power | 13.48 A | 13.55 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 | 56.6 kg/kWp | 56.1 kg/kWp | | Product warranty | 25 yrs | 25 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 Declared annual degradation, with a 1.0% first-year loss assumed for both panels because at least one datasheet omits it, 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, 565WT:** 18,957 kWh - **Cumulative output, 570WT:** 19,125 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | 565WT | 570WT | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 565 W | 570 W | 100.0% of rated power | | Cool, bright day | 40 °C | 540 W | 544 W | 95.5% of rated power | | Typical summer roof | 55 °C | 514 W | 519 W | 91.0% of rated power | | Hot roof | 70 °C | 489 W | 493 W | 86.5% of rated power | ## Against the whole database | Measure | 565WT | 570WT | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #6,908 | #6,136 | 14,005 | 570WT leads by 772 places | | Power density | #6,841 | #6,058 | 14,005 | 570WT leads by 783 places | | Heat behaviour | #6,093 | #6,093 | 14,005 | Tied - the same position in the database | | Weight | #10,768 | #10,413 | 14,005 | 570WT leads by 355 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #3,040 | #2,649 | 14,005 | 570WT leads by 391 places | ## Questions ### Which panel is better: Tata Power Solar GSD7S72T-565WT or Tata Power Solar GSD7S72T-570WT? According to our database: **Tata Power Solar GSD7S72T-570WT** has higher module efficiency (**22.07%** vs **21.87%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Tata Power Solar GSD7S72T-565WT and Tata Power Solar GSD7S72T-570WT? **Tata Power Solar GSD7S72T-565WT** has a module efficiency of **21.87%**, while **Tata Power Solar GSD7S72T-570WT** is **22.07%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Tata Power Solar GSD7S72T-565WT use vs Tata Power Solar GSD7S72T-570WT? **Tata Power Solar GSD7S72T-565WT** uses **TOPCon** cells; **Tata Power Solar GSD7S72T-570WT** 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 Tata Power Solar GSD7S72T-565WT and Tata Power Solar GSD7S72T-570WT? **Tata Power Solar GSD7S72T-565WT** has a **30 years** power warranty; **Tata Power Solar GSD7S72T-570WT** 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 Tata Power Solar GSD7S72T-565WT and Tata Power Solar GSD7S72T-570WT bifacial panels? Both **Tata Power Solar GSD7S72T-565WT** and **Tata Power Solar GSD7S72T-570WT** 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 - [Tata Power Solar GSD7S72T-565WT vs Tata Power Solar GSD7S72T-595WT](https://comparepv.com/compare/tata-power-solar-gsd7s72t-565wt/tata-power-solar-gsd7s72t-595wt) - 4 differences, the largest is module efficiency - [Tata Power Solar GSD7S72T-565WT vs Tata Power Solar GSD7S72T-590WT](https://comparepv.com/compare/tata-power-solar-gsd7s72t-565wt/tata-power-solar-gsd7s72t-590wt) - 4 differences, the largest is module efficiency - [Tata Power Solar GSD7S72T-565WT vs Tata Power Solar GSD7S72T-585WT](https://comparepv.com/compare/tata-power-solar-gsd7s72t-565wt/tata-power-solar-gsd7s72t-585wt) - 3 differences, the largest is module efficiency - [Tata Power Solar GSD7S72T-565WT vs Tata Power Solar GSD7S72T-580WT](https://comparepv.com/compare/tata-power-solar-gsd7s72t-565wt/tata-power-solar-gsd7s72t-580wt) - 3 differences, the largest is module efficiency - [Tata Power Solar GSD7S72T-565WT vs Tata Power Solar GSD7S72T-575WT](https://comparepv.com/compare/tata-power-solar-gsd7s72t-565wt/tata-power-solar-gsd7s72t-575wt) - 3 differences, the largest is module efficiency - [Tata Power Solar GSD7S72T-565WT vs Tata Power Solar TP642LG10B](https://comparepv.com/compare/tata-power-solar-gsd7s72t-565wt/tata-power-solar-tp642lg10b) - 13 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/tata-power-solar-gsd7s72t-565wt/tata-power-solar-gsd7s72t-570wt 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.