--- title: "Peimar OR10H450MNDB (FB) vs Peimar SG325P - Solar Panel Comparison | ComparePV" description: "Compare Peimar OR10H450MNDB (FB) vs Peimar SG325P side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/peimar-or10h450mndb-fb/peimar-sg325p" updated: 2026-09-23 --- # Peimar OR10H450MNDB (FB) vs Peimar SG325P OR10H450MNDB (FB) leads on the differences that matter The largest is module efficiency: 6.30 pp more efficient. 3 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Peimar OR10H450MNDB (FB)](https://comparepv.com/panel/peimar-or10h450mndb-fb) | [Peimar SG325P](https://comparepv.com/panel/peimar-sg325p) | | Manufacturer | Peimar | Peimar | | Power | 450 Wp | 325 Wp | | Efficiency | 23.04 % | 16.74 % | | Technology | TOPCon | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | OR10H450MNDB (FB) | SG325P | Difference | | --- | --- | --- | --- | | Module efficiency | 23.04 % | 16.74 % | +6.30 pp for OR10H450MNDB (FB) | | Temperature coefficient | -0.290 %/°C | -0.430 %/°C | +0.140 %/°C for OR10H450MNDB (FB) | | Rated power | 450 Wp | 325 Wp | +125 W for OR10H450MNDB (FB) | | Power density | 230.4 Wp/m² | 167.4 Wp/m² | +63.0 Wp/m² for OR10H450MNDB (FB) | | Weight per kWp | 51.6 kg/kWp | 69.2 kg/kWp | -17.6 kg/kWp for OR10H450MNDB (FB) | | Product warranty | 25 yrs | 20 yrs | +5 yrs for OR10H450MNDB (FB) | | Open-circuit voltage | 38.99 V | 44.60 V | 5.61 V apart | | Short-circuit current | 14.25 A | 9.74 A | 4.51 A apart | | Cell technology | TOPCon | PERC | TOPCon vs PERC | | Current at max power | 13.53 A | 9.03 A | 4.50 A apart | | Cell count | 108 | 72 | 36 cells apart | | Voltage at max power | 33.25 V | 36.30 V | 3.05 V apart | | Bifacial | Yes | No | Yes vs No | | Dimensions | 1722x1134x30 mm | 1957x992x40 mm | 1722x1134x30 mm vs 1957x992x40 mm | | Cell type | Monocrystalline | Polycrystalline | Monocrystalline vs Polycrystalline | ## Every compared parameter | Parameter | OR10H450MNDB (FB) | SG325P | | --- | --- | --- | | Rated power | 450 Wp | 325 Wp | | Module efficiency | 23.04 % | 16.74 % | | Power density | 230.4 Wp/m² | 167.4 Wp/m² | | Open-circuit voltage | 38.99 V | 44.60 V | | Voltage at max power | 33.25 V | 36.30 V | | Short-circuit current | 14.25 A | 9.74 A | | Current at max power | 13.53 A | 9.03 A | | Temperature coefficient | -0.290 %/°C | -0.430 %/°C | | Dimensions | 1722x1134x30 mm | 1957x992x40 mm | | Module area | 1.953 m² | 1.941 m² | | Weight | 23.2 kg | 22.5 kg | | Weight per kWp | 51.6 kg/kWp | 69.2 kg/kWp | | Product warranty | 25 yrs | 20 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | - | | Cell technology | TOPCon | PERC | | Cell type | Monocrystalline | Polycrystalline | | Cell count | 108 | 72 | | Bifacial | Yes | No | ## Thirty-year yield A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year - **Cumulative output, OR10H450MNDB (FB):** 15,098 kWh - **Cumulative output, SG325P:** 10,904 kWh - **Gap:** 4,194 kWh ## Output when hot | Condition | Cell temperature | OR10H450MNDB (FB) | SG325P | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 450 W | 325 W | 100.0% of rated power | | Cool, bright day | 40 °C | 430 W | 304 W | 93.5% of rated power | | Typical summer roof | 55 °C | 411 W | 283 W | 87.1% of rated power | | Hot roof | 70 °C | 391 W | 262 W | 80.7% of rated power | ## Against the whole database | Measure | OR10H450MNDB (FB) | SG325P | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #1,711 | #13,521 | 14,005 | OR10H450MNDB (FB) leads by 11,810 places | | Power density | #1,708 | #13,515 | 14,005 | OR10H450MNDB (FB) leads by 11,807 places | | Heat behaviour | #2,165 | #13,847 | 14,005 | OR10H450MNDB (FB) leads by 11,682 places | | Weight | #5,005 | #13,370 | 14,005 | OR10H450MNDB (FB) leads by 8,365 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #5,539 | #13,109 | 14,005 | OR10H450MNDB (FB) leads by 7,570 places | ## Questions ### Which panel is better: Peimar OR10H450MNDB (FB) or Peimar SG325P? According to our database: **Peimar OR10H450MNDB (FB)** has higher module efficiency (**23.04%** vs **16.74%**); **Peimar OR10H450MNDB (FB)** tolerates heat better (temp coeff **-0.290%/°C** vs **-0.430%/°C**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Peimar OR10H450MNDB (FB) and Peimar SG325P? **Peimar OR10H450MNDB (FB)** has a module efficiency of **23.04%**, while **Peimar SG325P** is **16.74%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Peimar OR10H450MNDB (FB) use vs Peimar SG325P? **Peimar OR10H450MNDB (FB)** uses **TOPCon** cells; **Peimar SG325P** uses **PERC**. 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 Peimar OR10H450MNDB (FB) and Peimar SG325P? **Peimar OR10H450MNDB (FB)** has a **30 years** power warranty; **Peimar SG325P** 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 Peimar OR10H450MNDB (FB) and Peimar SG325P bifacial panels? **Peimar OR10H450MNDB (FB)** is bifacial (captures light from both faces); **Peimar SG325P** is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath. ## Related comparisons - [Peimar OR10H450MNDB (FB) vs Peimar OR10H595MNDB](https://comparepv.com/compare/peimar-or10h450mndb-fb/peimar-or10h595mndb) - 7 differences, the largest is rated power - [Peimar SG325P vs Peimar SG330P](https://comparepv.com/compare/peimar-sg325p/peimar-sg330p) - One difference: module efficiency - [Peimar OR10H450MNDB (FB) vs Peimar SA500M (FB)](https://comparepv.com/compare/peimar-or10h450mndb-fb/peimar-sa500m-fb) - 12 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/peimar-or10h450mndb-fb/peimar-sg325p 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.