[trose]

Yes, it's very difficult to move electricity far distances. I believe it has to do with the natural resistance of copper. While its quite low, it's not zero and it adds up over hundreds of miles of copper. IANAE so anyone feel free to correct me on that

[harterrt]

For context, the average transmission loss between generator and consumption in the US is ~11%. This is generally over relatively short distances when compared to actual transmission.

In the short term, transmission lines are congested during peak hours so we often can't pipe enough power to high demand markets.

[zardo]

It doesn't seem feasible without low cost superconducting power lines.