--- title: "SpolarPV SPV670-TG12-132BD vs SpolarPV SPV675-TG12-132BD - Solar Panel Comparison | ComparePV" description: "Compare SpolarPV SPV670-TG12-132BD vs SpolarPV SPV675-TG12-132BD side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/spolarpv-spv670-tg12-132bd/spolarpv-spv675-tg12-132bd" updated: 2026-09-11 --- # SpolarPV SPV670-TG12-132BD vs SpolarPV SPV675-TG12-132BD 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 | [SpolarPV SPV670-TG12-132BD](https://comparepv.com/panel/spolarpv-spv670-tg12-132bd) | [SpolarPV SPV675-TG12-132BD](https://comparepv.com/panel/spolarpv-spv675-tg12-132bd) | | Manufacturer | SpolarPV | SpolarPV | | Power | 670 Wp | 675 Wp | | Efficiency | 21.59 % | 21.76 % | | Technology | TOPCon | TOPCon | ## Every compared parameter | Parameter | SPV670-TG12-132BD | SPV675-TG12-132BD | | --- | --- | --- | | Rated power | 670 Wp | 675 Wp | | Module efficiency | 21.59 % | 21.76 % | | Power density | 215.9 Wp/m² | 217.6 Wp/m² | | Open-circuit voltage | 46.50 V | 46.70 V | | Voltage at max power | 39.21 V | 39.43 V | | Short-circuit current | 17.90 A | 17.93 A | | Current at max power | 17.09 A | 17.14 A | | Temperature coefficient | -0.300 %/°C | -0.300 %/°C | | Dimensions | 2383x1302x30 mm | 2383x1302x30 mm | | Module area | 3.103 m² | 3.103 m² | | Weight | 38.0 kg | 38.0 kg | | Weight per kWp | 56.7 kg/kWp | 56.3 kg/kWp | | Product warranty | 12 yrs | 12 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | 0.46 %/yr | 0.46 %/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 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, SPV670-TG12-132BD:** 22,046 kWh - **Cumulative output, SPV675-TG12-132BD:** 22,211 kWh - **Gap:** 165 kWh ## Output when hot | Condition | Cell temperature | SPV670-TG12-132BD | SPV675-TG12-132BD | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 670 W | 675 W | 100.0% of rated power | | Cool, bright day | 40 °C | 640 W | 645 W | 95.5% of rated power | | Typical summer roof | 55 °C | 610 W | 614 W | 91.0% of rated power | | Hot roof | 70 °C | 580 W | 584 W | 86.5% of rated power | ## Against the whole database | Measure | SPV670-TG12-132BD | SPV675-TG12-132BD | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #7,726 | #7,285 | 14,005 | SPV675-TG12-132BD leads by 441 places | | Power density | #7,627 | #7,310 | 14,005 | SPV675-TG12-132BD leads by 317 places | | Heat behaviour | #6,093 | #6,093 | 14,005 | Tied - the same position in the database | | Weight | #10,811 | #10,556 | 14,005 | SPV675-TG12-132BD leads by 255 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #2,462 | #2,161 | 14,005 | SPV675-TG12-132BD leads by 301 places | ## Questions ### Which panel is better: SpolarPV SPV670-TG12-132BD or SpolarPV SPV675-TG12-132BD? According to our database: **SpolarPV SPV675-TG12-132BD** has higher module efficiency (**21.76%** vs **21.59%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of SpolarPV SPV670-TG12-132BD and SpolarPV SPV675-TG12-132BD? **SpolarPV SPV670-TG12-132BD** has a module efficiency of **21.59%**, while **SpolarPV SPV675-TG12-132BD** is **21.76%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does SpolarPV SPV670-TG12-132BD use vs SpolarPV SPV675-TG12-132BD? **SpolarPV SPV670-TG12-132BD** uses **TOPCon** cells; **SpolarPV SPV675-TG12-132BD** 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 SpolarPV SPV670-TG12-132BD and SpolarPV SPV675-TG12-132BD? **SpolarPV SPV670-TG12-132BD** has a **30 years** power warranty; **SpolarPV SPV675-TG12-132BD** 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 SpolarPV SPV670-TG12-132BD and SpolarPV SPV675-TG12-132BD bifacial panels? Both **SpolarPV SPV670-TG12-132BD** and **SpolarPV SPV675-TG12-132BD** 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 - [SpolarPV SPV670-TG12-132BD vs SpolarPV SPV690-TG12-132BD](https://comparepv.com/compare/spolarpv-spv670-tg12-132bd/spolarpv-spv690-tg12-132bd) - 4 differences, the largest is module efficiency - [SpolarPV SPV670-TG12-132BD vs SpolarPV SPV685-TG12-132BD](https://comparepv.com/compare/spolarpv-spv670-tg12-132bd/spolarpv-spv685-tg12-132bd) - 4 differences, the largest is module efficiency - [SpolarPV SPV670-TG12-132BD vs SpolarPV SPV680-TG12-132BD](https://comparepv.com/compare/spolarpv-spv670-tg12-132bd/spolarpv-spv680-tg12-132bd) - 3 differences, the largest is module efficiency - [SpolarPV SPV670-TG12-132BD vs SpolarPV SPV665-TG12-132BD](https://comparepv.com/compare/spolarpv-spv670-tg12-132bd/spolarpv-spv665-tg12-132bd) - The same specification on paper - [SpolarPV SPV670-TG12-132BD vs SpolarPV SPV660-TG12-132BD](https://comparepv.com/compare/spolarpv-spv670-tg12-132bd/spolarpv-spv660-tg12-132bd) - 3 differences, the largest is module efficiency - [SpolarPV SPV670-TG12-132BD vs SpolarPV SPV700-TG12-132BD](https://comparepv.com/compare/spolarpv-spv670-tg12-132bd/spolarpv-spv700-tg12-132bd) - 6 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/spolarpv-spv670-tg12-132bd/spolarpv-spv675-tg12-132bd 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.