according to data from the world bank enterprise surveys from in developing countries access to finance is the foremost barrier to firm development world bank figure these financial constraints are exacerbated for green growth and climate action in which the private sector is sometimes reluctant to invest in part to a lack of proven and readily available business models or a failure to understand the business case development cooperation can address both the demand side and offer side of the access to finance equation on the one hand it can stimulate demand for clean technologies for example by raising awareness and demonstrating the business case