General Electric lists GE Energy, and not GE Power Systems, among its businesses.
General Electric Company
You will notice that "GE Power Systems" appears in 2003 press
releases, while "GE Energy" appears in 2004 press releases. (If you
click on the last press release of 2003, and the first of 2004, you'll
see a change from "About GE Power Systems" to "About GE Energy.")
"2003 Press Releases"
"2004 Press Releases"
So it appears that at the end of 2003 or beginning of 2004, the name
changed. An article from that time confirms this impression.
"GE Power profit falls in 2003" (January 16, 2004) ["GE Power Systems,
the Atlanta-based GE division renamed GE Energy in late 2003 ..."]
The old name may linger on in certain respects, perhaps out of
tradition, habit, or the expense of changing it. But officially, the
name is now GE Energy.
Search strategy --
Searched for these terms in various combinations on Google:
"ge power systems"
"renamed ge energy"
Browsed GE websites.