Hey Tanya,
The Hacienda, along with the project house and other hostels where you may be staying, do have the same standard outlet as we use here at home. No problems there.
As far as batteries go... alkaline batteries will be easy to find in the cities, Quito or Cayambe... but in Cangahua, the village where we spend most of our time, they are slightly more difficult to come by. Last year I remember going on a multi-town quest to find AA's. With that in mind, you may want to either bring a few from home or stock up while you're in Quito at the beginning of the project just to be sure.
See you super soon!
Micah