AC vs. DC

We find ourselves in a world where everything is run on AC. The reason? AC can be distributed far more efficiently than DC. In order to transport AC over large distances the voltage is stepped up via a transformer and when it reaches it's destination the voltage is once again reduced to the 220V used in homes. DC can also be stepped up and down via transformers but this is more complicated and far less efficient.

The debate between AC and DC has been carrying on for many years. DC having the advantage of being able to be stored, unlike AC. AC having the advantage of being more efficient when being transported, and certain appliances are not efficient in DC. So the debate carries on.

If your electrical needs are small then it is advised to use DC, but many DC appliances are not easy to find. And DC appliances are still much more expensive than AC appliances. However, in most homes with independent power it is advised to have an inverter to change the DC electricity (which is stored in your batteries) into AC. Some small loads, such as lights, can still utilize the DC directly from the batteries, but as before mentioned, DC lights and other appliances tend to be more expensive than AC.