Technology

Incorporating solar into our built environments represents an opportunity for hundreds of gigawatts to be installed worldwide without taking up any additional land. In many cases though, this will require solutions beyond typical rooftop PV installations and much closer cooperation between the PV and construction industries. A new report published by IEA PVPS looks to bring together the interests of both worlds, and clearly categorize both the building envelope and energy functions of different BIPV components.

Developed by Chinese specialist Mibet, the floating PV structure can reportedly endure wind and snow loads of up to 42m/s and 1KN/㎡, respectively, in all water environments. It was recently deployed in Poland, at a location where temperatures may reach as low as 40 degrees Celsius.

A research team at China’s Soochow University has used hydrogen-bonded organic frameworks to make sodium-ion batteries even more sustainable and affordable while prolonging their lifespan to over 10,000 cycles.

An Italian company has developed a system that can store energy from wind, solar and grid electricity by compressing and using CO2 without any emissions. The system draws CO2 from an inflatable atmospheric gas holder, stores it, and uses it to produce power again, when demand for stored energy arises.

Two different technological developments were announced this week for concentrated solar power technology. In Australia, a consortium led by Vast Solar filed a patent for a new tank design for thermal energy storage systems. And in the United States, Heliogen announced the rollout of robots to install and clean projects.

Scientists in the United States developed a computer simulator that can calculate the conversion efficiency of different solar cell materials and configurations – helping to guide research and optimization of new cell designs. The simulator is available to researchers as an open-source tool to save time and spot the best opportunities for optimization of any given approach.

Conceived by a Dutch consortium, according to Design for Recycling guidelines, the panel is being developed with two different encapsulants, one for the front of the module, which joins the glass and cells together; and a slightly different formulation for the back of the module, which attaches cells and backsheet together.

Sodium batteries, an increasingly competitive area of research, have emerged as a low-cost, lithium-free energy storage alternative based on abundant, more environmentally friendly materials. A pair of new research papers addresses some of the remaining hurdles to widespread adoption, such as the formation of dendrites on the anode.

Stanford scientists have fabricated a transition metal dichalcogenide (TMD) solar cell that is claimed to overcome the typical issue of this kind of PV device, the so-called Fermi-level pinning. They used graphene contacts to mitigate this phenomenon and achieved a record power per weight of 4.4 W/g.

Midsummer and Medacciai are developing a BIPV solution for curved metal roofs in southern European markets, through a five-year deal.