--- title: "IBC Solar YH205W-21M vs IBC Solar YH215W-21M - Solar Panel Comparison | ComparePV" description: "Compare IBC Solar YH205W-21M vs IBC Solar YH215W-21M side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/ibc-solar-yh205w-21m/ibc-solar-yh215w-21m" updated: 2026-09-11 --- # IBC Solar YH205W-21M vs IBC Solar YH215W-21M YH215W-21M leads on the differences that matter The largest is module efficiency: 0.97 pp more efficient. 14 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 | [IBC Solar YH205W-21M](https://comparepv.com/panel/ibc-solar-yh205w-21m) | [IBC Solar YH215W-21M](https://comparepv.com/panel/ibc-solar-yh215w-21m) | | Manufacturer | IBC Solar | IBC Solar | | Power | 205 Wp | 215 Wp | | Efficiency | 19.86 % | 20.83 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | YH205W-21M | YH215W-21M | Difference | | --- | --- | --- | --- | | Module efficiency | 19.86 % | 20.83 % | +0.97 pp for YH215W-21M | | Power density | 198.6 Wp/m² | 208.3 Wp/m² | +9.7 Wp/m² for YH215W-21M | | Rated power | 205 Wp | 215 Wp | +10 W for YH215W-21M | | Weight per kWp | 52.8 kg/kWp | 50.4 kg/kWp | -2.5 kg/kWp for YH215W-21M | ## Every compared parameter | Parameter | YH205W-21M | YH215W-21M | | --- | --- | --- | | Rated power | 205 Wp | 215 Wp | | Module efficiency | 19.86 % | 20.83 % | | Power density | 198.6 Wp/m² | 208.3 Wp/m² | | Open-circuit voltage | 28.36 V | 28.85 V | | Voltage at max power | 24.11 V | 24.78 V | | Short-circuit current | 8.95 A | 9.13 A | | Current at max power | 8.50 A | 8.68 A | | Temperature coefficient | -0.340 %/°C | -0.340 %/°C | | Dimensions | 1545x668x30 mm | 1545x668x30 mm | | Module area | 1.032 m² | 1.032 m² | | Weight | 10.8 kg | 10.8 kg | | Weight per kWp | 52.8 kg/kWp | 50.4 kg/kWp | | Product warranty | 30 yrs | 30 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | - | | Cell technology | PERC | PERC | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 42 | 42 | | Bifacial | No | No | ## Thirty-year yield Declared first-year losses, with 0.40% a year afterwards assumed for both panels, at 1,200 kWh/kWp a year Same temp coeff. for both panels (-0.340 %/°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, YH205W-21M:** 6,878 kWh - **Cumulative output, YH215W-21M:** 7,214 kWh - **Gap:** 336 kWh ## Output when hot | Condition | Cell temperature | YH205W-21M | YH215W-21M | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 205 W | 215 W | 100.0% of rated power | | Cool, bright day | 40 °C | 195 W | 204 W | 94.9% of rated power | | Typical summer roof | 55 °C | 184 W | 193 W | 89.8% of rated power | | Hot roof | 70 °C | 174 W | 182 W | 84.7% of rated power | ## Against the whole database | Measure | YH205W-21M | YH215W-21M | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #12,400 | #10,433 | 14,005 | YH215W-21M leads by 1,967 places | | Power density | #12,366 | #10,438 | 14,005 | YH215W-21M leads by 1,928 places | | Heat behaviour | #8,778 | #8,778 | 14,005 | Tied - the same position in the database | | Weight | #6,525 | #3,740 | 14,005 | YH215W-21M leads by 2,785 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #12,671 | #12,267 | 14,005 | YH215W-21M leads by 404 places | ## Questions ### Which panel is better: IBC Solar YH205W-21M or IBC Solar YH215W-21M? According to our database: **IBC Solar YH**215 W**-21M** has higher module efficiency (**20.83%** vs **19.86%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of IBC Solar YH205W-21M and IBC Solar YH215W-21M? **IBC Solar YH**205 W**-21M** has a module efficiency of **19.86%**, while **IBC Solar YH**215 W**-21M** is **20.83%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does IBC Solar YH205W-21M use vs IBC Solar YH215W-21M? **IBC Solar YH**205 W**-21M** uses **PERC** cells; **IBC Solar YH**215 W**-21M** 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 IBC Solar YH205W-21M and IBC Solar YH215W-21M? **IBC Solar YH**205 W**-21M** has a **30 years** power warranty; **IBC Solar YH**215 W**-21M** 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 - [IBC Solar YH205W-21M vs IBC Solar YH210W-21M](https://comparepv.com/compare/ibc-solar-yh205w-21m/ibc-solar-yh210w-21m) - 2 differences, the largest is module efficiency - [IBC Solar YH205W-21M vs IBC Solar YH720W-33MHD/MH](https://comparepv.com/compare/ibc-solar-yh205w-21m/ibc-solar-yh720w-33mhd-mh) - 14 differences, the largest is module efficiency - [IBC Solar YH205W-21M vs IBC Solar YH715W-33MHD/MH](https://comparepv.com/compare/ibc-solar-yh205w-21m/ibc-solar-yh715w-33mhd-mh) - 14 differences, the largest is module efficiency - [IBC Solar YH205W-21M vs IBC Solar YH710W-33MHD/MH](https://comparepv.com/compare/ibc-solar-yh205w-21m/ibc-solar-yh710w-33mhd-mh) - 14 differences, the largest is module efficiency - [IBC Solar YH205W-21M vs IBC Solar YH550W-36MH](https://comparepv.com/compare/ibc-solar-yh205w-21m/ibc-solar-yh550w-36mh) - 13 differences, the largest is module efficiency - [IBC Solar YH205W-21M vs IBC Solar YH545W-36MH](https://comparepv.com/compare/ibc-solar-yh205w-21m/ibc-solar-yh545w-36mh) - 13 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/ibc-solar-yh205w-21m/ibc-solar-yh215w-21m 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.