Learn English – Difference between “invest in” and “invest into”


Possible Duplicates:
Difference between “in” and “into”
When should “into” be used rather than “in to,” and vice versa?

Since solar power is theoretically the most efficient energy source on earth, shouldn't we invest more in harnessing it?

As I was writing the sentence above, I became uncertain as to whether I should write in or into, and thereby doubted whether I really understood the difference. Please explain.

Best Answer

The following Ngram indicates that "invest in" occurs nearly 400 times more frequently than "invest into". Personally, I have always heard "invest in", never "invest into".


Since usage ultimately defines language, I would not tend to fight "invest in" merely because of the current definition of "in". There are many examples of words having different meanings in different contexts; "in" is one of them.