This note, based on the WorldBank's Private Participation in Infrastructure (PPI)project database, reviews trends in infrastructure projectswith private participation in low-income countries. Fourmain conclusions arise. Surprisingly, the proportion ofcountries with at least one project - eighty one percent -is higher among low-income, than middle-income countries. Asin middle-income countries, most investment has been intelecommunications, or energy projects. However, inlow-income countries, well over half the projects aregreenfield. And the scale of private participation inlow-income countries, lags far behind that in middle-income countries.