Siena ambiente Spa: the company manages the waste treatment of the Province of Siena (Tuscany) using high tech systems that guarantee management, recovery and disposal of waste.

The company also focuses on Compost production, energy recovery and aims to send to the landfill only the non-reusable waste.

The firm has developed PV, biogas and wind power plants.

Exalto has supported Siena ambiente in order to increase energy efficiency and renewable energies in the waste treatment processes and in its buildings.