Technology and R&D

Germany’s TÜV Rheinland is investigating how photovoltaics could be used for powering railway traction networks in a 14-month research project.

The device was designed by scientists in Portugal to optimize light absorption by the semiconductor and ensure an effective diffusion of redox species while offering minimal electronic and ionic transport resistance. The cell has a 25cm2 photoactive area and relies on ferrocyanide/anthraquinone redox flow chemistry and a nanostructured hematite photoelectrode.

An international research team has examined combining solar power generation with energy-intensive hydroponic horticulture and has found that this may be a viable solution depending on project size and available incentive policies. Their approach considered various factors impacting PV system efficiency, including environmental factors, the type of solar array, and the electricity demand from the hydroponic farm.

There is a threshold at which big becomes too big when it comes to PV module sizes, argues Hongbin Fang, the director of product marketing at Longi Solar. Fang recently said at pv magazine’s Roundtables USA event that despite size limits, there is still a lot of efficiency and cost-reduction potential to come.

Developed by Canada-based Hydrogen Optimized, the electrolyzer can be used to stabilize electrical grids and optimize energy recovery from intermittent renewable power sources such as solar and wind. Furthermore, this week four more big international partnerships for developing green hydrogen were announced across Germany, the Middle East, and Australia.

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.

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.

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.

HJT technology could fill an innovation gap in the residential and commercial rooftop PV market, and boost U.S. solar leadership through domestic manufacturing of cells and modules.

With a new system for floating photovoltaic power plants, engineers from Germany want to make the application cheaper, higher-yielding, and safer. The result is somewhat reminiscent of a pufferfish, which also gave the system its name.