Utility Scale Storage

According to Chinese researchers, using abandoned coal mine goaves for pumped hydro facilities in combination with large scale solar and wind is not only technically feasible but can also provide an efficiency of 82.8% in yearly operation cases. They applied the model to wind and solar-rich northwestern and southwestern China.

The battery was fabricated by Chinese scientists with a low-cost electrolyte made of a derivative of TEMPO, which is a well-known electroactive aminoxyl radical used with several applications in chemistry and biochemistry. According to the researchers, the battery shows high redox potential and is crossover-free.

French energy giant Engie has developed a transfer function method based on a model used to assess PV plant variability. Its researchers claim that the new approach does not overestimate the levelised cost of hydrogen (LCOH) of an alkaline electrolyser powered by offgrid solar, finding that in Australia green hydrogen produced with such systems may already be cost competitive with blue hydrogen.

Sydney-based zinc-bromide battery technology company Gelion will deliver 100 MWh of energy storage to Mayur Renewables for its clean energy projects in Papua New Guinea under a new deal.

Developed by Italian dry bottom ash handling system provider Magaldi Power, the system produces green thermal energy — steam or hot air — which can be used directly in industrial plants or for the generation of electricity using steam turbines. The system consists of a blower, a fluidisation air blowing system, a fluidisation air suction system, an air filter and fan, an air pre-heater, and an integrated thermal energy storage module. Silica sands are the system’s storage media.

EleXsys Energy’s technology enables the controlled flow of excess energy from distributed rooftop-solar generators — think large C&I organisations and microgrid-united regional townships— to help stabilise global grids as they increasingly transition to renewables. The world could feel the positives of mass transition to solar within five years.

Lithium-ion batteries are a fantastic crutch for the renewable energy transition. It’s not all roses, though: Short duration limits, and potentially dangerous thermal runaway in rare circumstances, means the hunt continues for alternative electrochemical batteries. However, alternatives will largely complement lithium-ion batteries, rather than supersede them. Blake Matich looks at promising options to keep an eye on.

Dutch renewables company Photon Energy has announced it will build “the world’s largest” solar-plus-storage project to date, teaming with Australian technology provider and project developer RayGen Resources to develop a facility that will deliver 300 MW of solar generation and 3.6 GWh of energy storage.

A U.S. research team has sought to improve the way aluminium hydride is used for hydrogen storage. The material was nanoconfined in a framework that is claimed to be able to overcome the challenge represented by the thermodynamic limitation of hydrides in storing the clean fuel.

Less than a year ago and energy market analysts Cornwall Insight Australia projected a battery energy storage pipeline of 7 GW. This week the firm has updated its outlook and puts Australia’s current pipeline of proposed projects at over 26 GW. What is more, the technical lifetime of these assets is increasing too.