patrick egan thank you very much. can africa be a world leader in solar power?an it help solve long-standing infrastructure problems? a ceo that has big african plans, next on "bloomberg west." >> this is "bloomberg west." off grid has a mission -- empowering african homes and businesses with solar power. babylon more power to do it with the world bank announcing a $7 million investment in the tanzania-based company. off grid's ceo and cofounder joins me now. xavier, it's an interesting business. describe the conditions of your typical customer. >> they live on one dollar to four dollars a day. they are burning kerosene, which is gentle -- jet fuel for light. they may have to want three miles and have to pay for the privilege. >> went to the end up paying for that -- what to the end up paying for that? >> it varies wildly. i've seen up to a dollar a day. up to $30 a month to burn jet fuel in their living room. >> these are not people with capital to buy solar panels a cost. how much do yours cost? >> we don't sell it as a product. we sell it as a long-term lease