Post by SOLARKIT

Bifacial vs monofacial: when does the extra cost actually pay back on a real project? A bifacial module produces energy on both sides because the cells let light through to the rear, where reflected and diffuse radiation is converted as well. In the right environment that translates to 10–30% more yield from the same roof area, without adding modules or rethinking the inverter sizing. The catch is that this gain depends almost entirely on what sits underneath and around the array. Light-coloured gravel, white TPO membranes, concrete and snow reflect enough light to make the rear-side contribution meaningful, while dark bitumen or shaded ground will absorb most of it and the bonus shrinks fast. Mounting height, tilt and row spacing matter as well, because a panel placed too low or packed too tightly simply does not see enough reflected light to perform. This is why bifacial pays back best on flat roofs and ground-mounted systems, where you can actually engineer the albedo and the geometry around the modules. On a typical residential pitched roof with dark tiles, the same investment is harder to justify, and your client is usually better served by a high-efficiency monofacial. If you are sizing your next C&I or ground-mount project and weighing the BoM trade-off, the article walks through where bifacial earns its premium, and where it quietly underperforms. 👉 Read the full article: https://hubs.li/Q04fMs9m0