It has to be understood as a new source, an additional source of funds. At some point a government or an organization would be responsible for providing the return on initial investment, plus in some cases, a bonus, and I don't know whether that is the proper term, but obviously if targets are met, you're going to receive something on top of what you initially invested.
Je ne sais pas si ce terme est approprié, mais il va de soi que, si les objectifs sont atteints, les investisseurs recevront un montant en sus de ce qu'ils ont investi initialement, n'est-ce pas?