Furthermore, because of their success in disbursing funds, there is a risk that revolving funds might crowd out commercial sources from serving water and wastewater providers, especially since the volume of funds made available through this mechanism has recently been increased by the US stimulus package (Chapter 4). Bond banks also have the capacity to prioritise development projects according to their financial profitability. Developing the more profitable projects first can secure the initial capital and generate new sources of revenues, which can be used to mobilise new financing for developing a second generation of projects. This process can be repeated several times, so as to increase the number of projects financed in such a way.