It's one of the best analogies. I usually use rivers, waterfalls, dams, rain to illustrate. Basically the water cycle and how humans manipulate it to do things.

I’m still trying to understand electricity in terms of wattage amperage and voltage and the water pipe analogy seems to break down. If you have a solid explanation I’d be delighted to hear/see it.

In this analogy, water in a pipe is electricity in a wire.

Volts: Water pressure. The higher the pressure, the more forceful it goes through, but you can have a large or small diameter pipe with high and low pressures. But water can be highly pressurized without actually moving.

Amps: Water flow rate. More amps means more water flowing through the pipe, per second.

Watts: Power of the water. Multiply the pressure by the flow rate to get this. Higher with more water flow (amps) and higher pressure (volts).

Could you expand this to appliances being measure in amps? Is this the resistance?

In a solar powered system with limited supply being able to power a limited amount of devices - how is that calculated? What is a mental model I can use for that?