Short news on NAS batteries

NGK’s NAS batteries are restarting

Existing NAS batteries systems are rebuilt by NGK Insulators Ltd. to reduce potential fire risk. Slowly, but surely, the fire incident of September 21, 2011, becomes a classified event.

xcel-energy-logoFor instance, Xcel Energy now announces it is restarting its battery plant that was commissioned in 2008 and stopped on NGK recommendation after the fire incident in Japan.

GE continues to massively hire storage experts

geThere are still ten open job positions related to Durathon on GE web site. There is even one in Japan for a Field Services Engineer, in the middle of NGK playground.

More than ever, a leading technology for grid applications

sodiumIn a recent article “Dynamic Modelling of Advanced Battery Energy Storage System for Grid-Tied AC Microgrid Applications“, researchers concludes:

“Sodium sulfur-type BESS devices are best suited to the requirements set by modern microgrid applications. These batteries can act in contingencies where rapid action is required to maintain the adequate levels of the grid frequency, but also in the case of high penetration of renewable generation, such as wind or solar photovoltaic, since the NaS battery can operate as the perfect complement in valley hours. In this case, the excess energy can be stored for delivery in peak hours. They are environmentally safe and have low maintenance while operate at high temperatures; it does not represent a major drawback. The biggest drawbacks are the cost and the limited information about these type of batteries which difficult the development of experimental prototypes and computer models. It is expected however that the appearance of other vendors reduces costs and facilitate the modelling.”

It is one of the numerous independent studies that recognise the advantages of NAS compared with other technologies for grid storage solutions.

Gauthier Dupont
Dupont Energy Consulting GmbH