Office computers can account for up to 40 percent of a typical workplace power bill, and much of that is wasted on leaving them on overnight, or failing to put them to sleep when they’re not working. That’s a focus of giants such as IBM, NEC and Toshiba, startups like Verdiem and AVOB — and 1E, which calls itself the granddaddy of enterprise PC power management. This week, the New York-based company rolled out NightWatchman 6.0, the newest version of its flagship product now used by clients such as Verizon, AT&T and HSBC. The new features include enterprise-wide monitoring, as well as features allowing managers to take regional power pricing into account — an interesting potential linkage to smart grid and demand response applications in the future? Oh, and yes — 1E has also added servers to its list of manageable IT assets, though it doesn’t yet have clients it can name that are using that service.