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Separating generation from storage usually delivers higher value, but it may also deliver higher costs, the report said.

A prototype of a cement-based battery has been developed in Sweden for potential applications in buildings. Its creators claim it could become a solution to store electricity from rooftop PV and they do not exclude that it could also be used for the storage of large-scale renewables.

Maxeon’s Air technology platform brings solar to previously inaccessible roof spaces.

Spanish PV project developer Gransolar is planning to build a large-scale green hydrogen production plant in the Port of Almería, in southern Spain.

According to the International Energy Agency, most of the global reductions in CO2 emissions between now and 2030 would come from technologies available today. In a recent report, the agency sets what it described as a “cost-effective and economically productive” pathway resulting in an energy economy “dominated by renewables like solar and wind.”

Developed by a French-Canadian research group, the triple-junction cell is based on indium gallium phosphide (InGaP), indium gallium arsenide (InGaAs) and germanium (Ge) and has an active area of only 0.089 mm2. It can be used for applications in micro-concentrator photovoltaics (CPV).

US scientists have created a new design for lithium-metal, solid-state batteries that should avoid the formation of dendrites that grow into the electrolyte. Their multilayered battery could potentially recharge electric vehicles within 10 to 20 minutes.

The devil is in the details, as they say, and when it comes to the next generation of mass-produced, high-efficiency PV cells, silver costs may be devilishly hard to reduce. Making things worse, prices for the precious metal are now heading in the wrong direction.

With South Africa holding 63,000 of the world’s estimated 69,000 metric tons of platinum reserves – according to the Statista.com website – and Russia and Zimbabwe a further 5,100 between them, the European Commission has cited the metal as an example of a potential supply chain bottleneck that could handicap its grand plans for renewables-powered hydrogen production.

Hydrogen and hydrogen-based fuels will not be able to move forward fast enough to replace fossil fuels and tackle climate change, according to a German-Swiss research team that claims direct electrification alternatives are cheaper and easier to implement. The scientists cite too-high prices, short-term scarcity and long-term uncertainty, as the main reasons for their skepticism.