Looking at the purchasing values for the business macro areas – Energy infrastructure (generation and networks), Commercial and Trading (sales and call centres), Water (including Acea Elabori, for services provided to the sector), Environment (waste-to-energy and environmental services) and Corporate (Acea SpA) – during the year, the Energy Infrastructure segment accounted for the largest share of the total (Water segment (31.5%), and, with respect to the 2017 figures, the same two areas showed an increase in the amounts of all orders: works, in particular, but also goods and services (see Chart no.