This is based on findings from a pilot study that looked at logistics from the Port of Los Angeles to wider Southern California.
It's a reminder that the barriers to switching to 100% renewable energy aren't technological, but ultimately political. We're choosing to go at the speed we're at to end fossil fuel use. If we choose to eradicate them faster, then we could.
Until the Sun stops shining...
The problem with a lot of renewables is that they can't change much to meet demand.
...and the wind stops blowing. And the tides stop turning. And the rivers stop flowing. And uranium stops... uranium-ing.
Unlike coal and oil, which are literally infinite AND ubiquitous, neither of which is true for green energy.
/s
Also, coal and oil can't change to meet demand either. That's why we stockpile them.
With generators you can spin them up or down. That applies to Nuclear as well.
Solar and wind are much harder to do that with. You can try to fill in the gaps with batteries but it isn't as idea