A 17" Samsung SyncMaster monitor consumes 2W on standby and 23-24W in regular use. A comparable CRT monitor consumes 4W on standby and between 65-79W in regular usage.
That's almost 3 times more electric usage than a LCD monitor.
Here's an interesting fact about the LCD vs CRT monitors: In LCD monitors, the darker screen colors consume more power than the lighter ones. In CRT, the darker colors consume much less power.
