Just an update on previous post about new big batteries to be built in New South Wales. In that post, the author made the claim that grid-size batteries are cost-effective and come at a low(er) cost. Here are the instances in the article were such claims are made (my emphasis):
In doing so, TransGrid will demonstrate that batteries can provide the most cost-effective solution for NSW’s projected upcoming inertia shortfall,” Miller said.
This innovation will help accelerate the industry’s transformation to a low-carbon energy system, at a lower cost to customers” she said.
Batteries offer a solution to this challenge at a small fraction of the cost of traditional technologies such as synchronous condensers.
Research and results from the trial will be shared to support future projects and help demonstrate that battery technology is a low cost and technically viable solution to the emerging challenge created by the transformation of the generation sector.
Again, this looks impressive and also confirms the narrative of the media and some researchers that renewable technologies are cheap. If this is really true, then migrating to a combination of solar, wind and batteries seems the most logical thing to do.
However, not everything is what it seems.