For now, EnergyWatch is officially considered Discontinued, though it continues to function just fine as of interface 1800.
My work has been expanded upon by another author in the mod EnergyWatch v2:
http://www.curse-gaming.com/mod.php?addid=2233


EnergyWatch displays a small progress bar indicating how long until the next energy regeneration tick

It updates itself when your energy ticks up, so it may take a few seconds to sync itself after you first use some energy - no way I can think of to avoid this...

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EnergyWatch : Usage - /ew option
options:
on  : Enables EnergyWatch
off  : Disables EnergyWatch
unlock  : Allows you to move EnergyWatch
lock  : Locks EnergyWatch
sound _ : Sets Sound on/off or custom
invert  : Invert progress bar direction
scale _ : Scales EnergyWatch (0.25 - 3.0)
help _  : Prints help for certain options (below)
text _  : Sets the text on EnergyWatch
show _  : Set when EnergyWatch should be shown

EnergyWatch : Usage - /ew text string
the string may contain a few special replacements:
&e  : Current Energy
&em : Maximum Energy

EnergyWatch : Usage - /ew show option
option:
always  : Always shown
combat  : Shown in Combat
stealth : Shown in Combat and while Stealthed
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Vector- - Kerryn of Laughing Skull