Investment in network infrastructure – the energy, water, transport and telecommunication networks – which performs a vital role for the functioning of the economy, can contribute to raising growth and social welfare. But more is not always better. While the paper shows that investment in...

Investment in network infrastructure can boost long-term economic growth in OECD countries. Moreover, infrastructure investment can have a positive effect on growth that goes beyond the effect of the capital stock because of economies of scale, the existence of network externalities and...