On the right, barely visible, is the load center which will control the use of electric company power and the generator power. It will charge the batteries when they are low, use them up when public power fails, etc. This is a picture of the Vanguard Manibloc plumbing system. It uses flexible tubing instead of copper pipe. The tubing is easy to route through walls and has much fewer connections.
Red tubing is for hot and blue for cold so everything is easier to identify.
Each fixture has its own labeled shutoff at the Manibloc. However, since we are on over 20 acres we don't have to abide by the code. We are also incorporating Studor mini-vents to vent our plumbing fixtures without having to make holes in the roof. Here is Fran sweat soldering copper pipes. We have copper water lines running under the cement slab to the bathrooms in the far ends of the house.