A report published by the Rocky Mountain Institute makes recommendations for rooftop PV in regions affected by high winds. The study draws on the knowledge of structural engineers asked to analyze 25 solar systems across five Caribbean islands after they were hit by major hurricanes in 2017 and last year.

Scientists at Australia’s University of Queensland have set a new world record for a quantum dot solar cell. The group fabricated a 0.1cm² device from perovskite and measured power conversion efficiency at 16.6%. The record has been verified by the United States National Renewable Energy Laboratory.

An international group of scientists has developed a comprehensive method to track the microscopic processes at work in lithium batteries. Employing a ‘virtual unrolling’ model developed for ancient manuscripts too sensitive to be opened, the group peeked inside the layers of a commercial battery to gain a better understanding of the processes at work and the degradation mechanisms affecting them. Their findings, the group says, could provide a benchmark for battery characterization.

Scientists at the University of Southern Denmark working with sodium-ion batteries found that a new electrode material incorporating iron, manganese and phosphorous could increase both the power and capacity of the batteries.

With solar grade polysilicon prices having plummeted in recent years, cutting down on consumption of the material has not been a priority. But strategies exist and significant savings can be made through deploying thinner wafers that use less silicon, insists a new paper published by MIT and NREL. And as manufacturers are increasingly hitting dead ends on other routes to cost reduction, this option could be back on the table for many.

Researchers have made a finding they say could vastly simplify and reduce the production cost of perovskite solar cells. Working with mixed halide perovskites, the group found a disordered chemical composition can improve device efficiency.

Scientists at Princeton have found solar and wind energy offer the added environmental benefit of reducing water usage, by comparison with hydroelectric dams. Their findings, say the researchers, could have a positive impact on groundwater sustainability in drought-prone regions such as California, where they conducted a case study.

A team of scientists led by the University of Glasgow has discovered a more efficient method of splitting water into hydrogen and oxygen using electricity which it says could almost double the amount of hydrogen produced per millivolt.

Scientists at the Tokyo Institute of Technology have developed a carbon nanotube which forms a strong junction with a lead-halide perovskite, improving performance and stability.

Researchers in Chicago have developed a world first fully rechargeable lithium-carbon dioxide battery, an achievement they claim could pave the way for the use of the greenhouse gas in advanced energy storage systems.