OR
You could just throw away that old inefficient 'fridge in the garage (it's only got beer in, anyway), and get a modern efficient one.
Or you could take one less car journey, a week.
I watched a good TV program about the Mars "Curiosity" mission, last week. It made me LAUGH OUT LOUD to see the rational, intelligent engineer drive to work in his Prius, only to light a MASSIVE firework of a space rocket which probably consumed MILLIONS of times more energy than his car "saved", just to put a robot on a distant planning. Clever, but dumb.
I too was building my own "intelligent" power strips years back, simply because I was too lazy to switch everything off, when I left my lab. They must help, but don't fall into the trap of thinking that's enough.
The press like to jump on "energy saving initiatives" and each one reveals their horrendous, nay scary (since these people still set opinions of the masses) ignorance. The simple secret is to USE LESS STUFF, but in a society predicted on more, not less, consumption, that message just gets drowned out.
What are we to tell our grandchildren?
Where was I?