natual consumption reduction
With people switching to LED lights, TFT screens (TV etc), tablets rather than PCs there is a natural drop in consumption anyway so the actual savings with smart meters is reduced to start with.
I brought a monitor type maybe 5 years ago. I will admit that I changed a few things around the house, mainly older florescent tube fittings as they were pretty hungry, but light bulbs were changed to led as needed.
I know the house has a 300w load 24/7 with things like fridge / freezers, aquarium, IT stuff, heating, appliances like clocks phones etc, however i'm at a point where further savings are negligible.
The monitor sits in a drawer now, and has been for maybe 2 years as it was costing me a fortune in AA batteries!!