The solar dryer unarguably consumes less power and since the clothes are hung in it and not tumbled the fabric will be less subject to wear and tear during drying. The machine has few moving parts so it will last longer. On the other hand, there are some drawbacks. The dried fabric is not as soft. It takes a little more effort to hang the washing up or to lay it down carefully in a drawer. The machine cannot be placed just anywhere, for it requires a hole to be made through an outside wall. All in all, the solar dryer is quite a bit less convenient than the usual power-hungry tumbler dryer."
Source: www.o2.org, accessed April 2001