**4.3 Ireland**

In 2013, the CBA had in Ireland the strongest positive result, especially for the fast rollout scenario with the combination of energy statement with In-Home display (IHD) and variable tariff. Regarding the additional benefits from reduced emissions of greenhouse gases, all the considered scenarios were positive. However, in 2018 the trend changed and the CBA was reviewed with a slightly negative result that was considered neutral by the European Commission. The new deadline for the large-scale rollout has been set up in 2024 [12].

**Figure 4.** *Percentage of smart meter gas installed in Italy 2013-2020 (Source: [17]).*

The company Gas Networks Ireland7 (GNI) currently supports the National Smart Metering program, which is focused on both gas and electricity metering devices. The program includes the use of smart metering technology, variable time of use, and in-home displays according to the CBA results. A share communication infrastructure has been implemented for gas meters and electricity meters in order to leverage the costs. In future, the same infrastructure could be used also for water smart meters.
