It's actually quite effective when you need to go to the bins with the rubbish on these dark nights.
I seem to recall it's a 42w halogen giving the equivalent of 92w, (or something around that range).
It's like a lighthouse light, to stop cars driving into the house.
It quite handy for stopping people allowing their dogs to walk up the drive and crap on it or the lawn. The light comes on as they begin to pass the end and I've seen them tug on the lead to pull the dogs away.
BAS, I'm not rising. (Or sinking to your level if you prefer)