Is there a way to make energy decay stop permanently?

"graventhe;d-932854" wrote:
It's decaying too fast for my vampire to do things

Another way to tackle that problem is to use Relativity to slow down the game clock (not to adjust motive decay). With sim-time slowed down your sim will end up with more time in the day to do things. Install the mod, adjust the Set Speed option to something like 19 (the game default setting is 37) and see if your sim has enough time in the day to accomplish what you want. Then adjust the setting to your preference.