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A team of researchers from the Okinawa Institute of Science and Technology (OIST) has developed a new process for the production of perovskite solar devices; and reports a 5x5cm² device with an efficiency above 15%. The researchers worked with a 1 micron thick active layer, considerably thicker than in many other perovskite devices, and state that this helped achieve better long-term stability.

As backsheet manufacturers aim to keep up with cost reductions up and down the PV supply chain, new processes and materials are appearing, with claims to offer better performance as a moisture barrier, as well as better acetic acid permeability and higher reflectivity, among other features. pv magazine examines the state of the market for PV backsheets, and takes a look at some of the new material innovations that are gaining ground with module manufacturers.

Although the “solar flow battery” is currently considered too expensive by its own creators, a further improvement of its design and the use of emerging solar materials and new electrochemistry may open new opportunities for this kind of technology.

This means that this promising material, contrary to common belief, is able to form domains of polarized strain to minimize elastic energy. The research team made its discovery by using multimodal imaging.

The Belgian research institute developed its cell in partnership with EnergyVille, Solliance and German research center, ZSW.

DNV GL has issued its annual Energy Transition Outlook. It reports that global electricity demand is set to grow by a factor of 2.5. Over half of this demand is expected to be met with renewable energy by 2050, while storage will play a key role. It adds that grid infrastructure expenditures are less related to variable renewable energy assets than to increasing energy demand. In the current scenario, meanwhile, global warming is likely to reach 2.6°C.

As the deployment of renewable energy continues to expand around the world, driven by various inputs, such as capital allocation and investment, falling capital costs, competitive LCOE and various policy mechanisms, we are now moving towards a new era for renewable energy. ‘Renewables 2.0’ will have significant, wide-ranging consequences for all market players, as regulators reduce their support and power producers seek new revenue models. In this article, Duncan Ritchie, partner at Apricum – The Cleantech Advisory, will look at the key market developments for renewables, explode the myth of grid parity, highlight the need for flexibility and explain the importance of new financing solutions that are capable of meeting the new complexities brought about by ‘Renewables 2.0’.

In an interview with pv magazine, vice president of GoodWe, Ron Shen, talks about the company’s plans for Germany, Spain, Africa and India, in addition to its goal to triple production capacity to 15 GW in China. He also discusses the effect of China’s 31/5 policy change, and plans for an initial public offering (IPO).

The benefits of deploying bifacial solar panels on single-axis trackers are touted like snake oil these days, with promises of anywhere from 5 to 50% gains in energy output compared with a monofacial panel. Unfortunately, the field data that might delineate the actual energy gain of a bifacial panel on a tracker are hard to acquire, and the data that are available typically describe small-scale tests under tightly defined conditions.

The algorithm is said to be able to examine the relationship between weather forecast data and the projection of electric circuit parameters. Through this innovation, Purdue University researchers claim they can interpret the routinely collected maximum power point (MPP) time-series data, to assess the time-dependent “health” of installed solar modules.