Japan

EneCoat Technologies, a Japanese solar perovskite developer, has raised JPY 5.5 billion ($35 million) from new and existing investors to finance new collaborations based on its low-temperature production process.

An international research team has proposed a series of optimization techniques for antimony trisulfide (Sb2S3) solar cells that may reportedly increase the efficiency of these PV devices to over 11%. The resulting new cell design is said to significantly improve band alignment control and parameter optimization.

Enfinity Global has closed $162.4 million in financing for a 250 MW solar portfolio in Japan. The seven utility-scale projects are expected to produce 300 GWh of clean energy per year.

A Japanese-Finnish research group has assessed the levelized cost of energy of solar power plants supplying electricity to data centers in cold climates and has found that PV electricity could be considerably cheaper than grid electricity, even if used with battery storage.

The power purchase agreement covers all the energy generated at a 1.2 MW facility in eastern Japan and a 1.9 MW site in the south west of the country.

Canon has announced a new functional material for perovskite thin film passivation that potentially improves durability of perovskite solar cells while enabling a mass-production process. The Japanese company aims to start commercial production of the material in 2025.

A set of technological improvements incorporated into the new product NAS MODEL L24 allows for lower maintenance costs compared to the earlier sodium sulfur battery type developed by the two manufacturers.

Japan’s Ministry of Internal Affairs and Communications says that since 2021, it has received 44 reports of unwanted radio wave emissions from solar power systems, including interference with defense facilities and emergency wireless equipment. The ministry warns that PV systems may be removed by law if they continue to cause problems.

Researchers from Japan’s Riken Center for Emergent Matter Science have fabricated an organic solar cell that has achieved waterproofness without reducing flexibility. At 3 micrometers thick, it is thought to be the first cell of its kind to survive a washing machine cycle and retain efficiency after multiple cycles.

Scientists from the Tokyo Institute of Technology (Tokyo Tech) and High Energy Accelerator Research Organization (KEK) have developed a highly oxygen-deficient perovskite for protonic ceramic fuel cells (PCFCs), while the European Commission has approved its fourth Important Project of Common European Interest (IPCEI).