The college where I teach just renovated its science center. I'm very happy with the tabletop power we have in our new physics classroom, and I think the "lessons learned" apply to a kitchen too:
Don't do low-voltage DC. It'll never be the voltage you want, and plug standardization is a nightmare.
Don't put outlets on the top of the table. You'll spill, drop crumbs, and ruin the outlets.
Think about spilled liquids. A lot.
Make sure you can move the table to the other side of the room without cutting wires.
Our new physics lab classroom has long, heavy wooden "butcher block" tables with a top that overhangs the edge by an inch. The outlets are on the front edge of the table, protected from liquids by the overhang. The outlet boxes run to a heavy-duty cable with a male plug on the end: you plug the tables into a recessed floor box.