Yet at the same time, because energy would be so abundant, as a standard, it would, like aluminum, grossly depreciate in value. I could probably buy a Coke for the energy equivalent of many tons of dynamite, or more, which itself is a problem--the bottle of Coke does not require that much energy to make, and yet because the standard is something so common, it is now worth less than itself. Gold gets around this issue by being much scarcer and not having literally (and in multiple senses) universal use and value, but this is not so for energy.
Coca Cola does not cost as much money to make as you pay for it right now. A lot of the price is simply for the Brand Coca Cola.
If the production has a hard limit independant of energy (even an artificial one), then the price in energy per bottle will skyrocket. Basic Economics.
Coca Cola could easily turn into Luxury Good. Or something worthy of a Lottery.
What makes most good valuable is that no mater how MUCH money you throw at it, the supply is still finite. Aluminium had no such issues, wich is why it became cheap with more power.
And since we are talking about value:
Usually coins materials are worth more then the value printed on them. And a 100 Dollar note stands for so much more value then the production costs, it is ludicrous.
I don't have the same interest in storage mediums that many people in this discussion do. It seems profoundly dangerous for the average person to to be able to store several Hiroshimas in their wallet, which would be required for currency to be transferable into energy and vice versa.
Hiroshima was a lot of energy, released in a very short time in a very small space. A equal amount of energy over a longer time and longer surface would maybe give you a sunburn.
The only difference between a Endothermic Reaction (Fire) and a Explision is how fast the reaction runs/releases energy.
The Hiroshima Bomb and Nuclear Power plants both use Fissable material.
The Hiroshima bomb released about 42 Peta-Joule (15 zeroes)
Nuclear Powerplants produce 2558 terawatthours per year. That is 9208,8 Peta-Joule.
We are
literally producing 219 times as much enegry as the Hiroshima bomb per year. Just from nuclear power plants. And after conversion losses (all the way from heat to electricity). So we already have "several hundred hiroshimas" in private hands.
The estimaed total energy consmption on our planet was around 3.89 × 10^20 Joule for 2013. That is 389.000 Peta Joule. We are producing 9262 Hiroshima bombs worth of energy per year.
Let's asume that whatever storage medium is given to the averge person, is not easily turned into a planetbuster. Even if it contains 9262 Hiroshima Bombs worth of energy.
I'm really not sure about an energy backed currency. I mean, look at what happened to the ruble when the price of oil crashed. The ruble's basically a present day energy credit. Oil is pretty cheap and abundant, with huge fluctuations in supply and demand and huge fluctuations in price. It's not a good thing to have backing your currency at all.
The issue was this being a Fossil fuel, where supply can quickly change.
All energy production in Stellaris happens on renewable production levels. Just for simplicities sake a planet never runs out of Power Production Resources. Betharian Stone never runs out.