About Our Triple Bottom-Line Approach | Natural Capital Investment Fund As a former banker, I am intrigued by the concept of triple bottom line (people, planet, profit) loan underwriting. If you have a green business in one of the states that the Natural Capital Investment Fund operates out of, you should give this organization a call. Also, check out The Shade Fund, a source of capital for both sustainably minded entrepreneurs and non-profits. If you operate a green and sustainable business in Georgia, you are really in luck! The Georgia Green Loan Fund makes loans to green businesses for up to $50,000.