I appreciate your concern as well.Okay, I appreciate the concern, but to clarify I live in Seattle which is 86% hydro and 5% wind. Two sources that generate electricity regardless.
According to this article, “You only save a watt or two by turning off a computer vs. placing it in sleep mode. Forgetting to shut down your computer just a handful of times will negate an entire year's worth of incremental energy savings.”
This article says “The difference in power consumption between sleeping the Mac and turning it off is only .98 W, meaning that over a year, I’m using an additional 5.7 kWh (kilowatt-hours) of power (assuming I actively use the Mac eight hours per day). At the current average residential electricity rate in my part of the country (12.04 cents per kWh), turning off that Mac each night would only save me about $0.69 per year.”
So yeah, it really doesn’t seem like turning off your Mac every day is going to really save people money or help the environment all too much. UNLESS maybe you for some reason never use sleep mode. That’s not to say power efficiency doesn’t matter - it very much matters in notebooks that are on battery, but also matters simply due to thermals. The more power needed, the hotter it gets.
Clearly I wasn’t comparing against sleep mode; I think we’re all aware that sleep mode uses little power. The comparison was between leaving it idle and turning it off, and I said that.
Regardless of whether those two sources generate energy “regardless” or not, the energy could be used for other purpose, rather than wasted on leaving machines on when not required. That’s the point.
If you’re comparing sleep vs. turning it off, I tend to agree that (while more gains are always better) this wouldn’t be the first thing I’d argue about.