I keep on having a dream which keeps repeating every few days.

The dream starts off with me going to bed.  The bedroom is not always based at my house, sometimes i'm at a hotel or at friends or family.  In the dream i wake up and step out on to the landing (the landing is always the one at my house).  I try turning on the light but it won't come on.  I then try turning on the bedroom light and that won't come on either.  I go through every room upstairs and still none of the lights work. 
I make my way downstairs and check the fuse box.  I can tell the fuse has tripped so i reach in to re-set it.  After i've done this i try the hallway light and it comes on.  I then go through every light downstairs and they all come on.  I make my way back upstairs and try all the lights there and they all now work.  That's where the dream ends.

I have been having this dream every few days since the beginning of last year.  I always wake up feeling panicked but i'm not sure why, i can't detect any threat in the dream so why does this affect me the way it does.

Thanks for your help.