--- title: "KIOTO Solar KPV 440 Wp HCB vs KIOTO Solar KPV 450Wp HC - Solar Panel Comparison | ComparePV" description: "Compare KIOTO Solar KPV 440 Wp HCB vs KIOTO Solar KPV 450Wp HC side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/kioto-solar-kpv-440-wp-hcb/kioto-solar-kpv-450wp-hc" updated: 2026-09-11 --- # KIOTO Solar KPV 440 Wp HCB vs KIOTO Solar KPV 450Wp HC 450Wp HC leads on the differences that matter The largest is module efficiency: 0.51 pp more efficient. 16 of 19 comparable parameters are identical. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [KIOTO Solar KPV 440 Wp HCB](https://comparepv.com/panel/kioto-solar-kpv-440-wp-hcb) | [KIOTO Solar KPV 450Wp HC](https://comparepv.com/panel/kioto-solar-kpv-450wp-hc) | | Manufacturer | KIOTO Solar | KIOTO Solar | | Power | 440 Wp | 450 Wp | | Efficiency | 22.02 % | 22.53 % | | Technology | TOPCon | TOPCon | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | 440 Wp HCB | 450Wp HC | Difference | | --- | --- | --- | --- | | Module efficiency | 22.02 % | 22.53 % | +0.51 pp for 450Wp HC | | Power density | 220.2 Wp/m² | 225.2 Wp/m² | +5.0 Wp/m² for 450Wp HC | | Rated power | 440 Wp | 450 Wp | +10 W for 450Wp HC | ## Every compared parameter | Parameter | 440 Wp HCB | 450Wp HC | | --- | --- | --- | | Rated power | 440 Wp | 450 Wp | | Module efficiency | 22.02 % | 22.53 % | | Power density | 220.2 Wp/m² | 225.2 Wp/m² | | Open-circuit voltage | 39.78 V | 40.07 V | | Voltage at max power | 34.06 V | 34.47 V | | Short-circuit current | 13.63 A | 13.68 A | | Current at max power | 12.93 A | 13.06 A | | Temperature coefficient | -0.320 %/°C | -0.320 %/°C | | Dimensions | 1748x1143x35 mm | 1748x1143x35 mm | | Module area | 1.998 m² | 1.998 m² | | Weight | 22.5 kg | 22.5 kg | | Weight per kWp | 51.1 kg/kWp | 50.0 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 (-0.320 %/°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, 440 Wp HCB:** 14,763 kWh - **Cumulative output, 450Wp HC:** 15,098 kWh - **Gap:** 335 kWh ## Output when hot | Condition | Cell temperature | 440 Wp HCB | 450Wp HC | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 440 W | 450 W | 100.0% of rated power | | Cool, bright day | 40 °C | 419 W | 428 W | 95.2% of rated power | | Typical summer roof | 55 °C | 398 W | 407 W | 90.4% of rated power | | Hot roof | 70 °C | 377 W | 385 W | 85.6% of rated power | ## Against the whole database | Measure | 440 Wp HCB | 450Wp HC | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #6,329 | #3,982 | 14,005 | 450Wp HC leads by 2,347 places | | Power density | #6,326 | #4,224 | 14,005 | 450Wp HC leads by 2,102 places | | Heat behaviour | #8,312 | #8,312 | 14,005 | Tied - the same position in the database | | Weight | #4,485 | #3,317 | 14,005 | 450Wp HC leads by 1,168 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #5,966 | #5,068 | 14,005 | 450Wp HC leads by 898 places | ## Questions ### Which panel is better: KIOTO Solar KPV 440 Wp HCB or KIOTO Solar KPV 450Wp HC? According to our database: **KIOTO Solar KPV **450 Wp** HC** has higher module efficiency (**22.53%** vs **22.02%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of KIOTO Solar KPV 440 Wp HCB and KIOTO Solar KPV 450Wp HC? **KIOTO Solar KPV **440 Wp** HCB** has a module efficiency of **22.02%**, while **KIOTO Solar KPV **450 Wp** HC** is **22.53%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does KIOTO Solar KPV 440 Wp HCB use vs KIOTO Solar KPV 450Wp HC? **KIOTO Solar KPV **440 Wp** HCB** uses **TOPCon** cells; **KIOTO Solar KPV **450 Wp** HC** 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 KIOTO Solar KPV 440 Wp HCB and KIOTO Solar KPV 450Wp HC? **KIOTO Solar KPV **440 Wp** HCB** has a **30 years** power warranty; **KIOTO Solar KPV **450 Wp** HC** 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 - [KIOTO Solar KPV 440 Wp HCB vs KIOTO Solar KPV 445Wp HC](https://comparepv.com/compare/kioto-solar-kpv-440-wp-hcb/kioto-solar-kpv-445wp-hc) - One difference: module efficiency - [KIOTO Solar KPV 440 Wp HCB vs KIOTO Solar KPV 450 Wp HC NE](https://comparepv.com/compare/kioto-solar-kpv-440-wp-hcb/kioto-solar-kpv-450-wp-hc-ne) - 16 differences, the largest is performance warranty - [KIOTO Solar KPV 440 Wp HCB vs KIOTO Solar KPV 450Wp HC NE (G/G-TC)](https://comparepv.com/compare/kioto-solar-kpv-440-wp-hcb/kioto-solar-kpv-450wp-hc-ne-g-g-tc) - 16 differences, the largest is performance warranty - [KIOTO Solar KPV 440 Wp HCB vs KIOTO Solar KPV 445Wp HC NE (G/G-TC)](https://comparepv.com/compare/kioto-solar-kpv-440-wp-hcb/kioto-solar-kpv-445wp-hc-ne-g-g-tc) - 11 differences, the largest is module efficiency - [KIOTO Solar KPV 440 Wp HCB vs KIOTO Solar KPV 440Wp HC NE (G/G-TC)](https://comparepv.com/compare/kioto-solar-kpv-440-wp-hcb/kioto-solar-kpv-440wp-hc-ne-g-g-tc) - 11 differences, the largest is performance warranty --- Source: https://comparepv.com/compare/kioto-solar-kpv-440-wp-hcb/kioto-solar-kpv-450wp-hc 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.