These don't produce power consistently. That's why one would need to build redundancy. Also it's not always sunny somewhere, unless you build transcontinental transmission lines. And even then, there's a period of time where most sunlight is hitting the pacific ocean.
> 4) use some of the energy produced by 1-3 to dig real deep for geothermal everywhere
> 5) Ocean thermal energy conversion
Both of these are geographically dependent. Might as well has just said hydroelectricity.
> 2) wind + transmission lines, always windy somewhere
These don't produce power consistently. That's why one would need to build redundancy. Also it's not always sunny somewhere, unless you build transcontinental transmission lines. And even then, there's a period of time where most sunlight is hitting the pacific ocean.
> 4) use some of the energy produced by 1-3 to dig real deep for geothermal everywhere
> 5) Ocean thermal energy conversion
Both of these are geographically dependent. Might as well has just said hydroelectricity.