If you have no electricity you have no 401k, no bank accounts, no pension payments, no Social Security, no Medicare payments, no credit cards, no food at the grocery store to buy with silver, etc, etc.
Bitcoin would most likely come back before any of those..there is satellite blockchain, HAM radio blockchain, get a few generators and you are back “online” with the thousands of “nodes” that have a record of every Bitcoin transaction back to 2009. (Including a node at my house).
I meant when compared to holding precious metals, ammo, alcohol and other means of trade.