Sustainable construction sites

Technical and organizational solutions for installation and management
Owner/client Rete Ferroviaria Italiana
Type of service Environmental sustainability
Location -
Period 2020
Cost -

In accordance with the policies defined by 'Ferrovie dello Stato Italiane' and by Kyoto Protocol, the emissions of 3 climate-changing gases produced during the construction activities of the new railway infrastructure have been estimated:

  • Carbon dioxide (CO2)
  • Methane (CH4)
  • Nitrogen oxide (N2O)

The analysis was carried out using the Grenhouse Gas Protocol (GHG Protocol), an international standard for greenhouse gas accounting.

The calculation was aimed at estimating direct emissions, i.e. those produced by a source owned or controlled by the contractor. In particular, consumption associated with mobile sources, such as excavation equipment and transport, was considered.

The total quantified emission of CO2eq, by biodiesel-powered worksite vehicles, is 34,646 tons, of which 28,143 tons will be considered in the emission framework.

Operating strategies

Reduced direct emissions at the construction site.


Annual in-process quantification using SE-compliant LCA.


Offset 100% of emissions with projects related to the VCS standard.

In order to reduce direct site emissions, the companies propose the implementation of some operational procedures including energy efficient electrical equipment, staff training and awareness on energy minimization strategies, use of LED lighting fixtures in the tunnel, use of cement/concrete with reduced CO2 emissions etc.

To reduce the construction site impact in terms of effects on climate change, it is intended to offset 100% of estimated emissions with balance projects related to the VCS - Verified Carbon Standard.

In particular, it is intended to offset 28,143 tons of CO2eq through the purchase of carbon credits from projects that develop renewable sources with the aim of reducing the use of fossil fuels and related emissions into the atmosphere. The purchase will be annual, spread over the duration of the site, indicatively equal to 6 years.

CO2eq emissions will be quantified annually through an LCA study, in accordance with current international standards, including those of the 140401 series, in order to update the expected emission framework.

The offset project of CO2 equivalent emissions will be composed of a mix of projects able to provide electricity from renewable sources and consequently avoid greenhouse gas emissions from non-renewable sources (eg coal-fired power plants). Specifically, two hydroelectric power plant projects active in Georgia and Turkey are proposed.

Preliminary analysis of direct emissions from mobile source.
Use of the Green House Gas Protocol.