As a home server - yes. My server equipment draws 230W at idle and that's using as much energy efficient gear as I could find. When I had my 2008 Mac Pro server it made the room unbearably hot in the summer. Once I decided to switch to the mini as the main server it made a huge difference in my comfort and my electricity bill (less AC and less power at idle)
You can get low power CPUs like atom and i3. Hard drives would be the main power draw. 230w for a sever sounds really high.