I remember watching an old sci-fi movie as a kid, but I can't recall too many details, unfortunately. 

It seemed to be sort a knock-off of a Godzilla movie. There were two or three large monsters that were terrorizing the Asian population. 

I remember one scene in particular where a large, green walking monster with tentacles, picked up a man in a white jumpsuit and hard hat and smashed him into some power lines (he worked at a power plant).  

There were also one or two other different type of monsters causing the same type of damage. 

If I had to guess, it was made in the 70s or 80s.

Does anyone know this movie? Given my poor description.