So there’s a lot to unpack here. Strictly in the nuclear sense, having a ton of americium (typically powers smoke detectors) isn’t a proliferation risk. The small fission product can’t be weaponized. But when we want to gridize and produce gigawatts at a single station, then the fissionable materials can be weaponized to release a similar amount of energy in a small time period (aka bomb).

But aside from nuclear energy, grid energy is entirely unnecessary.

The top 2 biggest wastes of energy are transporting people to and fro, for whatever reason. If we utilize modern communication technology, people can be present by transmitting their photons, their visage, rather than their entire physical mass. Let alone the safety conveyance which adds several tons of mass. (aka vehicle). The second biggest waste is thermal equilibrium. Cooling and heating.

The amazing thing about thermodynamics, is if you properly separate cool from heat, known as insulation, there is very little need to move heat from one side to the other, and the energy required to move that heat is almost nothing. For example, the amount of heat that a human adds to a dwelling just by existing and metabolizing, can be removed with millijoules per hour from a heat pump.

If we factor in the technology of insulation, heat pumps, and air locks, 99.999998% reduction in HVAC energy usage can be achieved.

And all this is with technology invented almost a century ago. 3-4 generations have been born since this has been possible. That’s how completely fucked we are wrt technology in the current system.