--- title: "HT-SAAE HT54-18X(N)-500W vs HT-SAAE HT54-18X(N)-520W - Solar Panel Comparison | ComparePV" description: "Compare HT-SAAE HT54-18X(N)-500W vs HT-SAAE HT54-18X(N)-520W side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/ht-saae-ht54-18x-n-500w/ht-saae-ht54-18x-n-520w" image: "https://comparepv.com/og/compare/panels/ht-saae-ht54-18x-n-500w/ht-saae-ht54-18x-n-520w.png" updated: 2026-09-11 --- # HT-SAAE HT54-18X(N)-500W vs HT-SAAE HT54-18X(N)-520W 520W leads on the differences that matter The largest is module efficiency: 0.90 pp more efficient. 14 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [HT-SAAE HT54-18X(N)-500W](https://comparepv.com/panel/ht-saae-ht54-18x-n-500w) | [HT-SAAE HT54-18X(N)-520W](https://comparepv.com/panel/ht-saae-ht54-18x-n-520w) | | Manufacturer | HT-SAAE | HT-SAAE | | Power | 500 Wp | 520 Wp | | Efficiency | 22.50 % | 23.40 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 500W | 520W | Difference | | --- | --- | --- | --- | | Module efficiency | 22.50 % | 23.40 % | +0.90 pp for 520W | | Power density | 225.0 Wp/m² | 234.0 Wp/m² | +9.0 Wp/m² for 520W | | Rated power | 500 Wp | 520 Wp | +20 W for 520W | | Short-circuit current | 15.62 A | 16.26 A | 0.64 A apart | | Current at max power | 14.77 A | 15.67 A | 0.90 A apart | ## Every compared parameter | Parameter | 500W | 520W | | --- | --- | --- | | Rated power | 500 Wp | 520 Wp | | Module efficiency | 22.50 % | 23.40 % | | Power density | 225.0 Wp/m² | 234.0 Wp/m² | | Open-circuit voltage | 40.10 V | 40.00 V | | Voltage at max power | 33.90 V | 33.20 V | | Short-circuit current | 15.62 A | 16.26 A | | Current at max power | 14.77 A | 15.67 A | | Temperature coefficient | -0.310 %/°C | -0.310 %/°C | | Dimensions | 1960x1134x30 mm | 1960x1134x30 mm | | Module area | 2.223 m² | 2.223 m² | | Weight | 23.5 kg | 23.5 kg | | Weight per kWp | 47.0 kg/kWp | 45.2 kg/kWp | | Product warranty | 30 yrs | 30 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 | 108 | 108 | | Bifacial | No | No | ## Thirty-year yield Each panel's own declared degradation curve, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.310 %/°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, 500W:** 16,776 kWh - **Cumulative output, 520W:** 17,447 kWh - **Gap:** 671 kWh ## Output when hot | Condition | Cell temperature | 500W | 520W | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 500 W | 520 W | 100.0% of rated power | | Cool, bright day | 40 °C | 477 W | 496 W | 95.3% of rated power | | Typical summer roof | 55 °C | 454 W | 472 W | 90.7% of rated power | | Hot roof | 70 °C | 430 W | 447 W | 86.0% of rated power | ## Against the whole database | Measure | 500W | 520W | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #4,281 | #919 | 14,129 | 520W leads by 3,362 places | | Power density | #4,510 | #935 | 14,129 | 520W leads by 3,575 places | | Heat behaviour | #8,069 | #8,069 | 14,129 | Tied - the same position in the database | | Weight | #1,450 | #635 | 14,129 | 520W leads by 815 places | | Warranty | #21 | #21 | 14,129 | Tied - the same position in the database | | Overall | #3,428 | #1,916 | 14,129 | 520W leads by 1,512 places | ## Questions ### Which panel is better: HT-SAAE HT54-18X(N)-500W or HT-SAAE HT54-18X(N)-520W? According to our database: **HT-SAAE HT54-18X(N)-**520 W**** has higher module efficiency (**23.40%** vs **22.50%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of HT-SAAE HT54-18X(N)-500W and HT-SAAE HT54-18X(N)-520W? **HT-SAAE HT54-18X(N)-**500 W**** has a module efficiency of **22.50%**, while **HT-SAAE HT54-18X(N)-**520 W**** is **23.40%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does HT-SAAE HT54-18X(N)-500W use vs HT-SAAE HT54-18X(N)-520W? **HT-SAAE HT54-18X(N)-**500 W**** uses **TOPCon** cells; **HT-SAAE HT54-18X(N)-**520 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 HT-SAAE HT54-18X(N)-500W and HT-SAAE HT54-18X(N)-520W? **HT-SAAE HT54-18X(N)-**500 W**** has a **30 years** power warranty; **HT-SAAE HT54-18X(N)-**520 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. ## Related comparisons - [HT-SAAE HT54-18X(N)-500W vs HT-SAAE HT54-18X(N)-515W](https://comparepv.com/compare/ht-saae-ht54-18x-n-500w/ht-saae-ht54-18x-n-515w) - 5 differences, the largest is module efficiency - [HT-SAAE HT54-18X(N)-500W vs HT-SAAE HT54-18X(N)-510W](https://comparepv.com/compare/ht-saae-ht54-18x-n-500w/ht-saae-ht54-18x-n-510w) - 6 differences, the largest is module efficiency - [HT-SAAE HT54-18X(N)-500W vs HT-SAAE HT54-18X(N)-505W](https://comparepv.com/compare/ht-saae-ht54-18x-n-500w/ht-saae-ht54-18x-n-505w) - 3 differences, the largest is module efficiency - [HT-SAAE HT54-18X(N)-500W vs HT-SAAE HT54-18X(N)-475W](https://comparepv.com/compare/ht-saae-ht54-18x-n-500w/ht-saae-ht54-18x-n-475w) - 9 differences, the largest is module efficiency - [HT-SAAE HT54-18X(N)-500W vs HT-SAAE HT54-18X(N)-470W](https://comparepv.com/compare/ht-saae-ht54-18x-n-500w/ht-saae-ht54-18x-n-470w) - 9 differences, the largest is module efficiency - [HT-SAAE HT54-18X(N)-500W vs HT-SAAE HT54-18X(N)-465W](https://comparepv.com/compare/ht-saae-ht54-18x-n-500w/ht-saae-ht54-18x-n-465w) - 8 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/ht-saae-ht54-18x-n-500w/ht-saae-ht54-18x-n-520w 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.