You cannot live in a modern, industrial society on just solar and wind power. Solar and wind power generation and those efficient low power devices you mentioned are all products of a modern, high tech industrial society. So is the modern medical care that most of us take for granted. And that requires high energy density carbon (oil, coal, or natural gas), nuclear, or hydroelectric energy sources. And we in the U.S. have just about maxed out our hydro sources.
And hydrogen: :lol: Where do you think we get hydrogen? 😱 You don't mine it, grow it, or brew it. You get hydrogen by electrolyzing water with electricity. Where does that electricity come from? And it takes as much electricity to produce hydrogen as you will get when you use the hydrogen as a fuel. (Well, OK. Catalytics show some progress at increasing the efficiency of the process.) Storage and distibution are also problems. But once it is produced, it is a clean fuel.
Windmills are very hard on birds, but that could be a benefit ... Put catcher nets at the bases of windmills for the "wind kill". Cheap source of protein.
Oh, I almost forgot. Do I worry about a Few watts of CPU energy consumption? No. I save more energy by being consciencious about turning off unneeded lights and taking short showers.