In shul we use candles, but not just any candles. The candles used in shul on Friday night burn straight through, with plenty to spare, until Motzoei Shabbos.
For reference purposes I have photographed the (22" long, 1.5" diameter) KAJ Shabbos Chanukah Menorah candle next to a standard chanukah menorah candle and a standard LONG Shabbos candle.
Quite impressive, no?
(The candles in this photo are the WEEKDAY candles... substantially shorter than the Shabbos candles)