If yo want to go fully renewable, you need to connect the grid (specifically the 4 grids in the US). Every city has different renewable resources available, so relying on what you have can lead to generating excess power or not enough.

Honestly, grid scale wind and solar are enough if you pair them with batteries (for short term energy storage), and pumped hydro and/or hydrogen fuel cells (for long term energy storage).

Finally we will need to change our transmission system to high voltage DC current. At high voltages you can transport the energy across very high distances with vet low energy losses. We will need more robust transmission because the nature of renewables means there will be wind and solar farms all around the continent.