Technology and R&D

Japan’s Rinnai has unveiled what it claims is the world’s first 100% hydrogen combustion technology for residential water heaters. It is currently using the hydrogen water heater in demonstration projects in Australia, prior to commercialization.

Battery startup Nunam is working with German carmaker Audi AG and the Audi Environmental Foundation to roll out electric rickshaws powered by used Audi e-tron used batteries. It expects to launch the e-rickshaws in India at some point early next year.

Longi Solar outlines its high-temperature mitigation logic in designing the lower current, high-wattage Hi-MO5 solar panel series.

Japan’s Arth has designed an autonomous habitation module that produces water in places without energy and water infrastructure. The company said the residential unit could also be used as an emergency evacuation site.

Italian solar panel manufacturer Sunerg has developed an integrated photovoltaic water heater solution based on two resistances. The system relies on a maximum power point tracking (MPPT) controller and can work with a PV module with a power output of up to 450 W.

The Korean manufacturer launched a new bifacial module based on M10 wafers and is planning to produce bigger modules based on M12 wafers starting from the third quarter.

Swiss module manufacturer Megasol has unveiled a novel rooftop PV system in two variants — full-black and translucent. The installation consists of vertical supports, a ridge profile, and solar modules.

Climate change is exacerbating water scarcity in many parts of the world, and while renewable energy is a long-term solution, in many cases it is a short-term solution, too. One such case in the energy-water nexus is that of canal-top solar, which was pioneered in India a decade ago, when the first canal-top solar array was installed in Gujarat. And new findings from the University of California and the resulting Project Nexus are now shining attention on a symbiotic application: saving water, while generating solar energy, without occupying arable land.

A Slovakian startup has developed a photovoltaic-integrated arm that provides off-grid power for weeding and other small agricultural applications. In its largest configuration, the system is 18 meters long, has a capacity of 2.4 kW, and is able to cover a cultivated area of 994 m².

The battery has a rated output of 5.5 kW and can be installed in outdoor environments. It is equipped with a hybrid power conditioner, a DC-to-DC converter, and a vehicle power supply adapter with a maximum output of 1.1 kWh.