Live data from Hacker News

Energy Storage Investments Boom as Battery Costs Halve in the Next Decade

about.bnef.com

1–10 of 134 posts

Re: Energy Storage Investments Boom as Battery Costs Halve in the Next Decade

#2
I had assumed fold was the same as 2^x, as in the number of layers for each fold of a piece of paper.

The artice talks about a 122 fold increase in the amount the power of installed battery power, I assume that a 2^122 increase is impossible, even accounting for replacement of end of life power packs.

Re: Energy Storage Investments Boom as Battery Costs Halve in the Next Decade

#3
post #2

I had assumed fold was the same as 2^x, as in the number of layers for each fold of a piece of paper. The artice talks about a 122 fold increase in the amount the power of installed battery power, I assume that a 2^122 increase is impossible, even accounting for replacement of end of life power packs.

I believe “x-fold” means “times x“.

Re: Energy Storage Investments Boom as Battery Costs Halve in the Next Decade

#4
post #3
post #2

I had assumed fold was the same as 2^x, as in the number of layers for each fold of a piece of paper. The artice talks about a 122 fold increase in the amount the power of installed battery power, I assume that a 2^122 increase is impossible, even accounting for replacement of end of life power packs.

I believe “x-fold” means “times x“.

Exactly. For example, threefold is 3x: https://en.wiktionary.org/wiki/threefold

Re: Energy Storage Investments Boom as Battery Costs Halve in the Next Decade

#5
post #3
post #2

I had assumed fold was the same as 2^x, as in the number of layers for each fold of a piece of paper. The artice talks about a 122 fold increase in the amount the power of installed battery power, I assume that a 2^122 increase is impossible, even accounting for replacement of end of life power packs.

I believe “x-fold” means “times x“.

Perhaps a question of mere semantics but why use the word 'fold' when it means times? Is it just to sound more "sophisticated"?

Re: Energy Storage Investments Boom as Battery Costs Halve in the Next Decade

#6
post #5
post #3

Earlier quoted context omitted.

I believe “x-fold” means “times x“.

Perhaps a question of mere semantics but why use the word 'fold' when it means times? Is it just to sound more "sophisticated"?

Apparently “fold” is an archaic suffix that means the same thing as times. I grew up with that so I haven’t really thought about it much.

Re: Energy Storage Investments Boom as Battery Costs Halve in the Next Decade

#7
post #5
post #3

Earlier quoted context omitted.

I believe “x-fold” means “times x“.

Perhaps a question of mere semantics but why use the word 'fold' when it means times? Is it just to sound more "sophisticated"?

Accusing the author of using "122 fold" instead of "times 122" to sound smart with a comment containing the phrase "a question of mere semantics" just might be peak HN.

Re: Energy Storage Investments Boom as Battery Costs Halve in the Next Decade

#9

For long term energy storage batteries are not ideal. Their costs increase linearly with time of storage and amount of storage. Peak shaving is an OK use for them, though.

Also batteries lose their stored energy over time.

Re: Energy Storage Investments Boom as Battery Costs Halve in the Next Decade

#10
post #6
post #5

Earlier quoted context omitted.

Perhaps a question of mere semantics but why use the word 'fold' when it means times? Is it just to sound more "sophisticated"?

Apparently “fold” is an archaic suffix that means the same thing as times. I grew up with that so I haven’t really thought about it much.

"Fold" is not archaic, but it may be more common in some regions compared to others (see "pop" vs. "soda"). The "-fold" suffix is in Webster's Ninth New Collegiate Dictionary and it does NOT have an "archaic" marking. It's also one of the answers when you ask Google to "define fold" (you have to look lower because suffixes are sorted after the main word).

I use the suffix myself; it's nice and short when you need to express the concept.

Post reply on HN