Honestly, why not just peg the value of 100 of a a currency to the energy used to create a loaf of bread? Then bread will always cost close to 100 and other products will be priced according to energy and not speculation.

Markets aren't that efficient compared to planning. There is a reason why firms nowadays work off of a bastardized descendent of Cybersyn.

but you're asking to replace the entire capitalist economy so I can only hope you understand a revolution doesn't come without risk and has never truly succeeded yet for anyone ever.

Tell that to Cubans, who had a longer life expectancy than people than the US even with the blockade before Trump intensified the blockade.