Japan

SolarPower Europe has predicted the volume of new PV capacity added this year will be 4% less than last year’s figure because of the Covid-19 crisis. At the end of 2019, the world had topped 630 GW of solar. For 2020, around 112 GW of new PV capacity is expected, and in 2021, newly installed capacity could be 149.9 GW if governments support renewables in their coronavirus economic recovery plans.

Researchers in Japan have modified the tin(IV) oxide layer of a perovskite device with a fullerene-derivative-based self-assembled monolayer to produce a cell they claim offers stability and a reduction in the hysteresis effect which makes predicting power output so tricky.

Self-consumption, the ability to isolate from the grid and provide power in the event of outages, and agricultural solar are key components in the 2020 revisions to Japan’s feed-in tariff program, reports RTS Corp.’s Izumi Kaizuka.

A new 100 MWp solar power plant supplied with Kyocera solar modules has begun operation in Japan’s Kagoshima Prefecture. Operated by the Kyocera-backed Kanoya Osaki Solar Hills LLC joint venture, the plant is one of the largest PV facilities on the island of Kyushu. Venture partner Tokyo Century arranged financing for the project with 17 regional banks.

The solar panel will be part of the half-cut-cell series recently launched by the Japanese manufacturer and the company claims it is ideal for rooftop PV projects with aesthetic requirements. The 19.0%-efficient product has a power output of 320 W.

Scientists in Japan have proposed a new model to estimate cell voltages in solar modules by irradiating the cells with a weak modulated laser light. The method could be used to detect hot spots and other panel-degradation issues, such as potential induced degradation (PID) peeling, cracking, and poor contacts.

Cell supply shortages could kick-start manufacturing activity in India, EV car sales are braced for a fall while still gaining market share and a new date has been set for the world’s biggest solar trade show.

EV sales are set to be 1.7 million off because of the economic fallout of the Covid-19 crisis, however analyst BloombergNEF predicts that will be less of a hit than the anticipated fall in sales of conventional cars, increasing the penetration of electric models into the overall market.

Researchers in Japan have demonstrated a new concept for a ‘heat-recovery’ solar cell, which they claim has the potential to exceed the theoretical limit for cell efficiency. They say, however, that a suitable material for the energy filtering layers is yet to be identified. The cell is equipped with a 100-micron thick silicon absorber, two electrodes and carrier-energy filtering layers placed between the absorber and electrodes.

Japan’s Kaneka and Taisei have designed their T-Green Multi Solar system to be integrated into walls and window surfaces. The system is available in two different versions – a solid type in which PV laminates are turned into vertical exterior panels or walls, and a variant that achieves transparency through striped solar cells that are integrated into window glass.