We don’t have one. We depend on no utility companies, only the wind and rain. (Except for Telstra internet and phone and we haven’t had internet for two days). We are well stocked with power and water. We get our energy to run a freezer, refrigerator, lights and computers from a solar array which generates about 7.5 kwh daily, and the energy is stored in a bank of batteries. We seem to use about 3.5 kwh daily.
There’s a backup generator if the sun should stop shining. This replaced a diesel based generator system. Not much fun getting the diesel up the hill or paying for it.
We get our water off the roofs of the houses. Our drinking water is collected in a new fiberglass tank and we filter it through a ceramic filter. The rest of the water comes from two concrete tanks, from which Tim occasionally scoops out dead bats. The next major project is to cover the tanks and keep out the bats and other wildlife.
We run a little honda engine, which pumps the water (but not the bats) up a hill to a tank about 1/4 mile from the house. It takes about 20 minutes to top it off. Then when we want water in the house, we just open the tap and it runs down the hill. Lots of engineering came before us. We just turn on the light switch and flush the toilet.