through their interventions and investments gibs are demonstrating to private investors that commercially successful investments are possible and happening now the size of the currently largest gib is expected to be approximately usd billion at final capitalisation while germany s kfw invested approximately usd billion in in domestic promotion including but not limited to special programmes to foster the use of renewable energy to increase energy efficiency and to promote innovative technology companies this smaller size is not preventing gibs from mobilising significant private investment however some gibs like the uk green investment bank australia s clean energy finance corporation and the connecticut green bank are successfully targeting institutional investors notably pension funds insurance companies sovereign wealth funds and mutual funds for coinvestment in funds and other transactions these investors represent a large pool of capital and an increasingly important alternative source of financing for lcr infrastructure investment as examined in other oecd reports