A full-size grid-tied solar array with about 15 or 20 panels can cost anywhere between $25,000 and $40,000 upfront depending on the size. AC panels are not cheaper, but proponents say the modularity makes it easier to install a few panels, and then later connect more to the existing set. More flexibility.
Evil, in a general context, is the absence or opposite of that which is described as being good. Often, evil is used to denote profound immorality. In certain religious contexts, evil has been described as a supernatural force. Definitions of evil vary, as does the analysis of its motives.
In economics, an inferior good is a good whose quantity demanded decreases when consumer income rises (or quantity demanded rises when consumer income decreases),[1] unlike normal goods, for which the opposite is observed.[2] Normal goods are those for which consumers' demand increases when their income increases.