Lightening represents energy and a fantastic, altering force. It is generally a positive dream symbol which represents the dreamers “awakened” state of consciousness.
If you see strong lightning in your dream you will find yourself the recipient of a fantastic moneymaking idea that really works. and if you see lightning flash from the sky and strike an object you will have a stroke of good luck. Weak lightning flashes denote general good fortune to the dreamer.... Tryskelion Dream Interpretation