Emiliano Bellini
Bifacial PV on rooftops can provide energy yield gains of up to 22.6%
Scientists in Australia have combined Monte Carlo Ray Trace (MCRT) techniques and electrical modeling to assess the potential energy gains of bifacial rooftop PV systems compared to monofacial arrays. They found that rooftop reflectivity is a key factor in increasing a bifacial PV system performance, and that system and module design should also be carefully considered.
All solar cell efficiencies at a glance – updated
The research group led by Professor Martin Green has published Version 63 of the solar cell efficiency tables. There are six new results reported in the new version.
Sharp unveils 575 W TOPCon solar panel with 22.26% efficiency
Sharp’s new IEC61215- and IEC61730-certified solar panels have an operating temperature coefficient of -0.30% per C and a bifaciality factor of over 80%.
Hanwha Qcells shuts down 3.5 GW solar factory in South Korea
Hanwha Qcells has closed its 3.5 GW solar factory in South Korea as part of plans to optimize its PV module production capabilities amid a stagnant domestic solar market.
New multilevel PV inverter concept based on switched capacitors, single DC input
Scientists in India have developed a 500 W seven-level inverter prototype based on switched capacitors. The device is reportedly able to achieve a high efficiency despite switching, conduction, and capacitor voltage ripple losses.
Polysilicon prices could hit all-time low by year-end
Bernreuter Research says in a new report that it expects polysilicon prices to soon dip below the historical low of $6.75/kg, which was reached in June 2020. It says global polysilicon capacity could hit 2.75 million metric tons (MT) by the end of December, with just 200,000 MT of the total outside of China.
Japan’s 18th solar auction concludes with lowest bid of $0.053/kWh
Japan’s latest procurement exercise was open to PV projects above 250 kW in size. The lowest price came in at JPY 7.94 ($0.053)/kWh, with 105 MW of allocated capacity.
Retrofit solution to convert rooftop PV systems into photovoltaic-thermal arrays
Scientists in Korea have proposed a simple methodolgy to tranform existing PV systems into photovoltaic-thermal (PVT) arrays. They claim the new design offers a cheaper alternative to expensive PVT systems, while enabling easier and faster deployment.
Solar module prices may reach $0.10/W by end 2024
Tim Buckley, director of Climate Energy Finance, speaks to pv magazine about the current steep trajectory of solar module prices. He estimates that PV panels prices will end up dropping by 40% this year and predicts the closure of old technology and sub-scale solar manufacturing facilities, both in China and globally.
Gallium arsenide solar cell achieves 23.1% efficiency via electrochemical porosification
An international research group has utilized a new porosification technique to build gallium arsenide (GaAs) solar cells that allow the recovery of germanium films. The new cell achieved an efficiency that is reportedly in line with that of other GaAs PV devices, but can be produced at a lower cost thanks to the reuse of germanium.
