Technology and R&D

HJT technology could fill an innovation gap in the residential and commercial rooftop PV market, and boost U.S. solar leadership through domestic manufacturing of cells and modules.

A French research group has compared the performance ratio of 100 PV systems relying on micro-inverters with that of 100 installations relying on string/central inverters. It found the performance ratio is around 79% for both system typologies and that arrays with micro-inverters are more sensitive to environmental factors.

Canada-based Elcora said the transaction will enhance its mining operations and energy storage business.

Scientists in the UK delved deep into the structure of a perovskite solar cell, looking to understand the complex relationship between the materials that make up the perovskite layer, and the role of different defects in both limiting and improving performance. The findings could allow for new perovskite materials that are specially structured to maximize PV performance.

Designed for BIPV applications by scientists in Korea, the solar cell is based on a 100μm-thick n-type silicon wafer and has a bending radius of 3-6mm.

NREL scientists have unveiled a storage system based on a phase-change material that can store both thermal energy and electricity in a single device. According to the researchers, the new technology may be used to store excess electricity produced by on-site solar or wind operations in large scale buildings.

Should heterojunction solar technologies be temporarily shelved? Could copper plating replace screen-printed silver conductive surfaces in cells? Why are tandem cells a likely successor to PERC? Brett Hallam recently sat down with Natalie Filatoff in Sydney to explain the findings of a new study by UNSW that sought to answer these controversial questions.

Proton Motor Fuel Cell and xelectrix Power have also developed a complete system that combines fuel cell and battery storage technologies and U.S.-based Plug Power is building a 100 MW electrolyzer in Egypt. Furthermore, Germany said it wants to deploy 10 GW of hydrogen capacity by 2030 and South Korea unveiled its hydrogen strategy.

Finland-based fairway maintenance service provider Arctia Group is developing solar-powered navigational markers through an EU-funded research project. A 10-meter high solar buoy is currently being tested by the Ports of Stockholm.

Scientists in the United States pieced together data from hundreds of different sources, looking to establish the key factors that have led to consistently falling prices for lithium-ion technology since their commercialization thirty years ago. They find that public-funded research, primarily in chemistry and materials science, has made the largest contribution to cost reduction. And they offer suggestions on policy and investment to ensure that the research can continue to make these important contributions to reduction in battery costs.