I enjoy Terri Blackstock's novels -- this is the sixth I've read -- seven if you count The Heart Reader, which was publiched anonymously but was pretty bad IMHO, so I prefer not to count it as a Blackstock book.
Anyway, that brings me to Last Light: A Restoration Novel -- I guess Restoration is the series. The premise is similar to the TV series Dark Angel: all computerized/electronic items just stop working. What I like about this is that it is more of a SF setting, as opposed to their being a spiritual explanation or some bizarre electronic rapture.
The story takes place in a suburb in the South, and there is a mystery, racial tensions, disaffected teens, and some spiritual growth.
Not bad at all.