*3.2. Survey Data Assessment Methodology*

In this section, we analyse some of the above-mentioned indicators, comparing the obtained data across all the 27 cities. The number of resources that each municipality assigns to the energy transition (number of campaigns, people and budget) has been analysed as an indicator of energy democracy. Total energy consumption was analysed next (how much energy per capita is consumed in each city), quantifying also what the main energy sources are and in which sectors that energy is consumed. Hidden Energy Flows were included among the analysed sectors.

Energy consumption has been linked to GHG emissions by comparing the obtained emission and consumption data, and additionally by estimating the emissions that should be obtained from the consumed energy; this was done by taking into account each city's energy mix and the emission intensities of each type of fuel (eqtCO2 per kWh) provided by the IPCC [45], as well as the electricity mix per country [24].

Finally, various economic, climatic or size indicators, such as the gross domestic product (GDP), the human development index (HDI), the heating and cooling degree days (HDD and CDD) and the number of inhabitants of each city were plotted as a function of the energy consumption and fitted to a logarithmic equation in order to try to find a correlation, following the methodology of Steinberger et al. [46], Arto et al. [10] and Akizu et al. [11].
