Re: 1GW (sic) Battery Energy Storage Systems

On 30/11/2024 15:53, john larkin wrote:

On Sat, 30 Nov 2024 12:37:55 +0100, Jeroen Belleman
<jeroen@nospam.please> wrote:
 

On 11/30/24 11:50, Martin Brown wrote:

>
SO that makes me wonder how big is a 1GW transformer operating at 400kV?
And how much does one cost?

>
There are plenty of images and descriptions of 400kV transformers
on the web. You have to be an insider to get a fair idea of the
cost. These things are usually made to order. I'd guess a 1GVA
400kV transformer to be between 6 and 7 M$. I'm not an insider
though.
>
Jeroen Belleman

 https://www.dropbox.com/scl/fi/fte4dwtoui96xgeyn9f0h/XfmrScatter.JPG?rlkey=8uh77rliholy3iyd9y8lnvdwc&raw=1
 I should add dollars.

Thanks John, but that looks a bit pessimistic.
If I read it right that's 200lb=0.1T for 1kVA so 10^5T for a 1GVA unit.
My current best guess from 4.5T for 1MVA and so  4500T for 1GVA (plus a bit extra supporting structure to deal with the extra weight).
--
Martin Brown