In this talk, Johan will discuss the technical barriers met while deploying distributed generation (DG) technology in the grid.  These are related to voltage quality, reliability, stability of the grid, but also safety, environmental and economic issues are important.  Eventually, the question 'how far can you go ?' is addressed.  The range from small-scale local DG such as photovoltaics to large-scale (off-shore) wind farms are dealt with, each with their specific issues. The talk is illustrated with examples from research projects at the KULeuven financied by national and European research programs, in which the speaker was/is involved.