Technology and R&D

Floating PV specialist Ocean Sun and South Korean energy company EN Technologies have signed an agreement to develop the pilot projects of the 2.1 GW floating solar site planned near the Saemangeum tidal flat, on the coast of the Yellow Sea.

Researchers have created a device to produce electricity and steam at the same time. The system is said to offer 85.1% efficiency and deliver steam at up to 248 degrees Celsius. The converter combines III–V, triple-junction solar cells and a high-efficiency solar thermal system based on parabolic trough collectors.

Danish researchers have shown that adding 250 W solar panels to all of the buggies in a 50-cart fleet is a profitable investment. With an upfront investment of around €75,000, annual benefits of around €15,000 are possible, they claim.

IHS Markit’s latest report looks at a wave of new investments in large-scale projects. Economies of scale and technological improvements, as well as renewables deployment, could make green hydrogen price-competitive with grey and blue hydrogen.

The German meteorological service, the Karlsruhe Institute of Technology and solar forecaster Meteocontrol are investigating how weather events can be better factored in when forecasting solar power generation. The Federal Ministry of Economics is funding the ‘Permastrom’ research project with €2.5 million.

A prototype of an energy-harvesting, solar-powered smart window device has been developed by scientists from the U.S. Department of Energy’s Argonne National Laboratory. The window was created by integrating a semi-transparent perovskite solar cell and a multi-layer nanophotonic coating.

Chinese manufacturers including Trina Solar, Risen Energy and JA Solar have established a group to design and produce bigger PV modules. The 39-member alliance also includes inverter suppliers including Huawei, Sungrow and SMA.

A newly developed autonomous robotic cleaning solution for modules uses artificial intelligence to clean daily or on demand, without substantial human input.

French energy giant Engie recently commissioned a solar module testing facility in Chile’s Atacama Desert, a region which has the world’s highest solar radiation. Thore Müller – head of bifacial PV R&D and solar services at Engie Laborelec, talked to pv magazineabout the advantages of testing panels, inverters and cleaning systems in hot, arid environments.

The module – which measures 2,411×1,134×35mm, weighs 31.1kg and features 156 p-type monocrystalline cells – is available in five versions with power outputs of 565-585 W and efficiencies of 20.67-21.40%. Jinko says the Pro Tiger series will become the company’s main revenue stream in 2022, surpassing the Tiger 475 W panel.