It is actually a rather common practice to use electric candles as replacements for real candles. I, for one, prefer real candles, but I'm an overly set in my ways kind of lady. I could use the other kind, I just want to avoid it at all costs.
In my practices, there is something simply wonderful about lighting a real candle before my netjeru and akhu, and lovely when I perform Senut.Part of that is just that I love getting into the ritual of things, and following my heart in doing so. Another part is it makes more sense with a real candle in my practices.