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Environment & Energy

progree

(13,061 posts)

1. Interesting - the article mentioned 3 solar + battery projects, and all were 4 hours of storage

Reply to OKIsItJustMe (Original post)

Sun Mar 31, 2019, 02:00 AM

Mar 2019

e.g. like in the OP, it's a 60 MW solar with 240 MWH battery storage -- meaning the battery can store 4 hours of the solar plant's full output (60 MW X 4 hours = 240 MWH).

I wonder what is magical about 4 hours? I've seen other articles where the battery is sized for 3 or 4 hours of storage at full capacity. I do realize that the battery can be discharged more slowly and last longer, e.g. half the MW capacity for 8 hours.

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Maui's largest solar project OK'd by PUC [View all] OKIsItJustMe Mar 2019 OP

Interesting - the article mentioned 3 solar + battery projects, and all were 4 hours of storage progree Mar 2019 #1

Here you go... OKIsItJustMe Mar 2019 #2

I'll have to study. I read the Exec Summary and stared at Figure ES-1b on p. vi for a long progree Mar 2019 #3

You're Welcome! OKIsItJustMe Mar 2019 #4

I'm just surprised that their metric of effectiveness is the amount of avoided curtailment -- progree Apr 2019 #5

Hawaii and the U.S. military bases in Hawaii are entirely dependent on imported fossil fuels... hunter Apr 2019 #6

So... you're proposing...? OKIsItJustMe Apr 2019 #7