The Collaborative International Dictionary of English v.0.48:

candlepower \candlepower\, Candle power \Candle power\ (Photom.)
   luminous intensity; illuminating power, as of a lamp, or gas
   flame, measured in candelas, referring to the light of a
   standard candle.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

candlepower
    n 1: luminous intensity measured in candelas [syn:
         candlepower, light intensity]