[m463]

keep reading. You skipped out before the entire point of the article in this paragraph:

"For example, if I omitted the battery storage of my solar installation, my system would become about 10 times cheaper: ..."

and then goes further along this interesting line of reasoning...

[Turskarama]

Sure but a large part of the reason for that is he's locked himself in to an obsolete storage technology.

To be clear: batteries are still not cost effective relative to a grid connection, but everyone who has an off grid system goes for LiPO for a reason.