--- title: "Peimar SG325P vs Peimar SG330P - Solar Panel Comparison | ComparePV" description: "Compare Peimar SG325P vs Peimar SG330P side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/peimar-sg325p/peimar-sg330p" updated: 2026-09-23 --- # Peimar SG325P vs Peimar SG330P SG330P leads on the differences that matter The largest is module efficiency: 0.26 pp more efficient. 17 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 SG325P](https://comparepv.com/panel/peimar-sg325p) | [Peimar SG330P](https://comparepv.com/panel/peimar-sg330p) | | Manufacturer | Peimar | Peimar | | Power | 325 Wp | 330 Wp | | Efficiency | 16.74 % | 17.00 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | SG325P | SG330P | Difference | | --- | --- | --- | --- | | Module efficiency | 16.74 % | 17.00 % | +0.26 pp for SG330P | ## Every compared parameter | Parameter | SG325P | SG330P | | --- | --- | --- | | Rated power | 325 Wp | 330 Wp | | Module efficiency | 16.74 % | 17.00 % | | Power density | 167.4 Wp/m² | 170.0 Wp/m² | | Open-circuit voltage | 44.60 V | 45.10 V | | Voltage at max power | 36.30 V | 36.40 V | | Short-circuit current | 9.74 A | 9.78 A | | Current at max power | 9.03 A | 9.07 A | | Temperature coefficient | -0.430 %/°C | -0.430 %/°C | | Dimensions | 1957x992x40 mm | 1957x992x40 mm | | Module area | 1.941 m² | 1.941 m² | | Weight | 22.5 kg | 22.5 kg | | Weight per kWp | 69.2 kg/kWp | 68.2 kg/kWp | | Product warranty | 20 yrs | 20 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | - | | Cell technology | PERC | PERC | | Cell type | Polycrystalline | Polycrystalline | | Cell count | 72 | 72 | | Bifacial | No | 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 Same temp coeff. for both panels (-0.430 %/°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, SG325P:** 10,904 kWh - **Cumulative output, SG330P:** 11,072 kWh - **Gap:** 168 kWh ## Output when hot | Condition | Cell temperature | SG325P | SG330P | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 325 W | 330 W | 100.0% of rated power | | Cool, bright day | 40 °C | 304 W | 309 W | 93.5% of rated power | | Typical summer roof | 55 °C | 283 W | 287 W | 87.1% of rated power | | Hot roof | 70 °C | 262 W | 266 W | 80.7% of rated power | ## Against the whole database | Measure | SG325P | SG330P | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #13,521 | #13,453 | 14,005 | SG330P leads by 68 places | | Power density | #13,515 | #13,452 | 14,005 | SG330P leads by 63 places | | Heat behaviour | #13,847 | #13,847 | 14,005 | Tied - the same position in the database | | Weight | #13,370 | #13,301 | 14,005 | SG330P leads by 69 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #13,109 | #13,045 | 14,005 | SG330P leads by 64 places | ## Questions ### Which panel is better: Peimar SG325P or Peimar SG330P? According to our database: **Peimar SG330P** has higher module efficiency (**17.00%** vs **16.74%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Peimar SG325P and Peimar SG330P? **Peimar SG325P** has a module efficiency of **16.74%**, while **Peimar SG330P** is **17.00%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Peimar SG325P use vs Peimar SG330P? **Peimar SG325P** uses **PERC** cells; **Peimar SG330P** 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 SG325P and Peimar SG330P? **Peimar SG325P** has a **30 years** power warranty; **Peimar SG330P** 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. ## Related comparisons - [Peimar SG325P vs Peimar OR10H595MNDB](https://comparepv.com/compare/peimar-sg325p/peimar-or10h595mndb) - 17 differences, the largest is module efficiency - [Peimar SG325P vs Peimar SA500M (FB)](https://comparepv.com/compare/peimar-sg325p/peimar-sa500m-fb) - 14 differences, the largest is module efficiency - [Peimar SG325P vs Peimar OR10H450MNDB (FB)](https://comparepv.com/compare/peimar-sg325p/peimar-or10h450mndb-fb) - 15 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/peimar-sg325p/peimar-sg330p 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.