Storage

Australia’s largest power utility, AGL, says it has received approval for a 200 MW/800 MWh grid scale battery to be developed at the site of its coal-fired Loy Yang power station in Victoria’s Latrobe Valley.

Belgium’s federal government has decided to reduce to 6% the VAT on PV systems and heat pumps deployed on buildings erected over the past ten years. This measure was previously applied only to projects developed on buildings that were more than ten years old.

Pumped hydro energy storage is ideally positioned to support reliability and reduce volatility in the energy market as Australia shifts from fossil fuels towards renewable power with former prime minister Malcolm Turnbull labeling the technology the “ultimate long-duration storage” solution.

Developed by researchers in Spain, the battery uses renewable electricity to melt low-cost metals such as silicon or ferrosilicon alloys to produce and store latent heat, which is in turn used by a thermophovoltaic generator to produce power. According to its creators, the device may store electricity at a cost of €10 per kilowatt-hour for a 10MWh system.

A US-German research group has used above-bandgap light to improve ion mobility in ceramic materials used in lithium-ion batteries and fuel cells. It found that the grain boundary conductance of gadolinium-doped cerium oxide, which is a ceramic used as a solid-state electrolyte in fuel cells, can be improved by a factor of approximately 3.5 at 250 degrees Celsius, by applying the proposed light technique.

Jamaica’s prime minister Andrew Holness revealed that an international consortium is planning to build a pumped-hydro storage project that has already secured preliminary approval. The project, which will also include deep-sea desalination, is currently undergoing technical and due-diligence reviews.

Scientists in Germany have identified the main challenges that are preventing aqueous zinc-ion batteries (ZIBs) from becoming a mainstream storage technology for power grid applications. According to their analysis, the two main hurdles that must be overcome in future research are the increase of the specific energy of the full Zn-ion cell and the prevention of the parasitic hydrogen evolution reaction occurring during the Zn electrodeposition step.

Australian redox flow battery manufacturer Redflow’s push into the United States market has received a major boost with the company announcing it will work with California-based biowaste technology firm Anaergia on the installation of a solar and 5.5-6MWh battery energy storage solution.

Through two different procurement exercises, the archipelago’s Central Electricity Board seeks to reduce its dependence on fossil fuels.

Researchers in the United States have tested organic photovoltaic filters in a greenhouse hosting lettuce growth and have found the devices’ transmission spectra may help fine-tune the characteristics of the plant. They used transcriptomic analysis to assess the key modifications of the plants grown under the solar filters.