Tests by 7X Energy show that ground cover material showed promise, but projects will likely still need to prove the long-term durability, degradation rates, and validation of installation labor and O&M.
A researcher from the NREL has set up a series of datasets of measured ground albedo values using measurement network data in the U.S. and data contributed by the PV industry. The measured albedo datasets are intended to help developers of ground-mounted PV projects in making a choice between monofacial and bifacial panels.
The U.S. authorities are currently subjecting imported bifacial modules to a 20% penalty – the same tariff applied to almost all other crystalline silicon solar modules.
German researchers have proposed a new model, based on a range of parameters, to influence the LCOE of bifacial PV plants, with a focus on components, land costs, inclination angles, albedo, and weather conditions.
Researchers from the Solar Energy Research Institute of Singapore have concluded that utility-scale PV projects relying on bifacial panels and single-axis trackers deliver the lowest levelized cost of energy in most of the world. They found that the combination of bifacial products with dual-axis trackers is still too expensive, despite the higher yield. The second-lowest LCOE is offered by monofacial single-axis tracker plants.
Atamostec, a private-public initiative supported by Chile’s government-run Production Development Corp. and several industrial partners, has developed a new module. The team claims that the bifacial panel offers an additional annual average gain of 11% compared to monofacial PERC modules with the same cell technology.
The exercise, conducted on Longi PERC bifacial modules by Germany’s TÜV SÜD at a test field in China, showed surprisingly higher gains in panels getting light reflection from painted-surface and grassland albedo. It also showed, Longi claimed, bifacial panels operate at lower temperatures than single-sided alternatives.
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