Norway’s Over Easy Solar AS introduced a new vertical PV system for rooftop applications last year. pv magazine spoke to CEO Trygve Mongstad about system prices and future market prospects for vertical rooftop solar tech.

Researchers in Saudi Arabia have built a perovskite-silicon tandem cell with textured silicon wafers to offer superior light trapping. The device has an open-circuit voltage of 1,851 mV, a short-circuit current of 18.9 mA/cm2, and a fill factor of 80.1%.

Slovenia’s new rebate program for rooftop solar has a budget of €10 million ($10.7 million).

Radovan Kopecek, the co-founder and director of Germany’s ISC Konstanz, says interdigitated back contact (IBC) tech could account for half of the global market for solar modules by 2030. He says IBC will start to dominate once TopCON and HJT get stuck at certain efficiency limits, and he believes TOPCon will be the first victim.

A new database developed by researchers in Germany includes 1,074 hydropower projects, 1,128 solar plants, and 276 wind power assets, along with geographic coordinates, construction statuses, and capacities for each of them.

The Tunisia authorities plan to allocate 1 GW of installed solar power through two different procurement exercises, spread across 10 projects.

New research highlights the crucial role of R&D in improving solar cell efficiency. The researchers discovered that it is theoretically possible to measure the promise of new solar cell technologies at any stage of development.

Researchers in the United Arab Emirates have developed a way to use compressed air storage to store solar power and provide additional cooling. They claim their prototype could compete with commercially available compression-cooling air conditioners.

South Korea’s new provisions establish a standardized collection system for each of the country’s major regions, in order to ensure a waste panel recycling/reuse rate of more than 80%.

Montenegro has introduced a new measure to reduce value-added tax on PV systems with capacities up to 1 MW.