--- title: "Solitek Forza 650 vs Solitek SOLID Framed White 650W - Solar Panel Comparison | ComparePV" description: "Compare Solitek Forza 650 vs Solitek SOLID Framed White 650W side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/ginlong-solis-forza-650/ginlong-solis-solid-framed-white-650w" updated: 2026-09-11 --- # Solitek Forza 650 vs Solitek SOLID Framed White 650W Identical on every published parameter All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Solitek Forza 650](https://comparepv.com/panel/ginlong-solis-forza-650) | [Solitek SOLID Framed White 650W](https://comparepv.com/panel/ginlong-solis-solid-framed-white-650w) | | Manufacturer | Solitek | Solitek | | Power | 650 Wp | 650 Wp | | Efficiency | 22.97 % | 22.97 % | | Technology | TOPCon | TOPCon | ## Every compared parameter | Parameter | Forza 650 | SOLID Framed White 650W | | --- | --- | --- | | Rated power | 650 Wp | 650 Wp | | Module efficiency | 22.97 % | 22.97 % | | Power density | 229.7 Wp/m² | 229.7 Wp/m² | | Open-circuit voltage | 44.28 V | 44.28 V | | Voltage at max power | 37.30 V | 37.30 V | | Short-circuit current | 18.48 A | 18.48 A | | Current at max power | 17.43 A | 17.43 A | | Temperature coefficient | -0.300 %/°C | -0.300 %/°C | | Dimensions | 2172x1303x30 mm | 2172x1303x30 mm | | Module area | 2.830 m² | 2.830 m² | | Weight | 34.2 kg | 34.2 kg | | Weight per kWp | 52.6 kg/kWp | 52.6 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 | 120 | 120 | | 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, Forza 650:** 21,809 kWh - **Cumulative output, SOLID Framed White 650W:** 21,809 kWh - **Gap:** No difference ## Output when hot | Condition | Cell temperature | Forza 650 | SOLID Framed White 650W | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 650 W | 650 W | 100.0% of rated power | | Cool, bright day | 40 °C | 621 W | 621 W | 95.5% of rated power | | Typical summer roof | 55 °C | 592 W | 592 W | 91.0% of rated power | | Hot roof | 70 °C | 562 W | 562 W | 86.5% of rated power | ## Against the whole database | Measure | Forza 650 | SOLID Framed White 650W | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #2,237 | #2,237 | 14,005 | Tied - the same position in the database | | Power density | #2,160 | #2,160 | 14,005 | Tied - the same position in the database | | Heat behaviour | #6,093 | #6,093 | 14,005 | Tied - the same position in the database | | Weight | #6,240 | #6,240 | 14,005 | Tied - the same position in the database | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #551 | #551 | 14,005 | Tied - the same position in the database | ## Questions ### Which panel is better: Solitek Forza 650 or Solitek SOLID Framed White 650W? According to our database: both panels are closely matched on key specs - the decision often comes down to price and local availability. See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Solitek Forza 650 and Solitek SOLID Framed White 650W? **Solitek Forza 650** has a module efficiency of **22.97%**, while **Solitek SOLID Framed White **650 W**** is **22.97%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Solitek Forza 650 use vs Solitek SOLID Framed White 650W? **Solitek Forza 650** uses **TOPCon** cells; **Solitek SOLID Framed White **650 W**** 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 Solitek Forza 650 and Solitek SOLID Framed White 650W? **Solitek Forza 650** has a **30 years** power warranty; **Solitek SOLID Framed White **650 W**** 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 Solitek Forza 650 and Solitek SOLID Framed White 650W bifacial panels? Both **Solitek Forza 650** and **Solitek SOLID Framed White **650 W**** 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 - [Solitek Forza 650 vs Solitek Forza 720](https://comparepv.com/compare/ginlong-solis-forza-650/ginlong-solis-forza-720) - 8 differences, the largest is rated power - [Solitek SOLID Framed White 650W vs Solitek SOLID Framed White 720W](https://comparepv.com/compare/ginlong-solis-solid-framed-white-650w/ginlong-solis-solid-framed-white-720w) - 8 differences, the largest is rated power - [Solitek Forza 650 vs Solitek Magnus 510](https://comparepv.com/compare/ginlong-solis-forza-650/ginlong-solis-magnus-510) - 12 differences, the largest is rated power - [Solitek Forza 650 vs Solitek SOLID Framed Transparent 505](https://comparepv.com/compare/ginlong-solis-forza-650/ginlong-solis-solid-framed-transparent-505) - 12 differences, the largest is module efficiency - [Solitek Forza 650 vs Solitek SOLRIF D Black 455](https://comparepv.com/compare/ginlong-solis-forza-650/ginlong-solis-solrif-d-black-455) - 13 differences, the largest is rated power - [Solitek Forza 650 vs Solitek SOLID Semi-Clear Framed 455 W](https://comparepv.com/compare/ginlong-solis-forza-650/ginlong-solis-solid-semi-clear-framed-455-w) - 13 differences, the largest is rated power --- Source: https://comparepv.com/compare/ginlong-solis-forza-650/ginlong-solis-solid-framed-white-650w 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.