*3.1. Ca' Rezzonico Museum*

A case study was considered for the application of the method: Ca' Rezzonico (Figure 5), Museum of 18th Century Venice, in Venice, Italy. Many Italian museums are hosted in historical buildings: 28 museums are pre-12th century, 483 were built between the 12th and 16th centuries, and 544 between the 17th and 19th centuries [43].

**Figure 5.** Ca' Rezzonico: (**a**) main front on the Grand Canal (Fondazione Musei Civici di Venezia s.d.); (**b**) ballroom on the first floor.

This palace was built during the Baroque age and was converted into a museum in 1936 after refurbishment interventions. The quality of architecture and exhibited works make Ca' Rezzonico an interesting and unique witness of the Venetian 19th century. It has four floors that host several museum rooms, a library shop, and a coffee bar, for a total surface are of 6400 m2. Seven different types of external walls and five different types of windows exist in the building. The energy consumption is about 142 kWh/m2a, including about 81 kWh/m2a for electricity, determined by averaging the bills of three consecutive years from 2014 to 2016 (Table 4).

**Table 4.** Energy consumption of Ca' Rezzonico for 2014–2016. The data represent the average use for the three years and are reported for each month; the large consumption is due to electricity; heating and domestic hot water are provided by natural gas. Note that heating is not required from May to September; the values are listed using kWh/ m2a.


The museum is managed and promoted by the Fondazione Musei Civici di Venezia foundation, which chose Ca' Rezzonico as a pilot case to test LEED requirements for achieving the certification for all museum systems.
