Protip: googling for the energy required to create such a wormhole is a better solution. That lands you on this BBC story[1] where they've interviewed well-known physicists, and state that

"As a very rough approximation, you would need the energy the sun produces over 100 million years to make a wormhole about the size of a grapefruit."

[1] http://www.bbc.com/future/story/20140326-will-we-ever-travel...