## 1 Introduction
### Calculation of the Residential Energy Use
Furthermore, the daily use of energy (thermal and electrical) on air-conditioned dwellings is given by the Mexican Ministry of Energy which is 10.73 kWh/dwelling, where 4.73 kWh is used for air-conditioning [31]. Therefore, air-conditioning makes up 44% of the total energy use of an air-conditioned household, which is considered to be a valid result. With respect to the average energy use of every activity, this is calculated for an air-conditioned (10.73 kWh/day) and for a non-air-conditioned household (4.67 kWh/day) by taking the shares given by the CONUEE (see Table 3). \begin{table}
\begin{tabular}{c c c} \hline \hline  & **Activity** & **Share of Total (\%)** \\ \hline \multirow{4}{*}{Air-conditioned} & Air-conditioning (electrical) & 44 \\  & Illumination \& appliances (electrical) & 33 \\  & Refrigeration (electrical) & 9 \\  & Stove, water \& space heating (thermal) & 14 \\ \hline \multirow{4}{*}{Not air-conditioned} & Illumination \& appliances (electrical) & 59 \\  & Refrigeration (electrical) & 16 \\ \cline{1-1}  & Stove \& water heating (thermal) & 25 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Share of the different energy use in air-conditioned and not air-conditioned dwellings in Mexico [33]. With Table 2 the thermal energy use is calculated at 14.32 TWh/year, i.e., 20.9% of the total thermal and electrical energy, in air-conditioned dwellings is 14% and in not air-conditioned is 25%. Figure 3 shows a break-down of the energy activities within the Mexican residential sector. In this way, two main type of dwellings are considered: Air-conditioned and not air-conditioned. This is considering that in many of the warmest parts of Mexico, air-conditioning systems are seen as being indispensable [33]. On the other hand, although large parts of the Mexico have warm to hot climates, the usage of air-conditioning is not essential in warm temperate zones, where a large part of the population lives (cf. Table 1), therefore most of Mexican households are not air-conditioned. Furthermore, the average power of each activity as well as the average time of usage have been found for Mexican conditions in prior documents by [PERSON] et al. and [PERSON] et al. [35; 36]. The data is shown in Table 4. It is important to mention that these values are nationally averaged, and they can vary due to economic, social and other factors. \begin{table}
\begin{tabular}{c c c c} \hline \hline  & **Activity** & **Annual Use (MWh)** & **Daily Use (kWh)** \\ \hline \multirow{4}{*}{Air-conditioned} & Air-conditioning (electrical) & 1.72 & 4.73 \\  & Illumination \& appliances (electrical) & 1.29 & 3.53 \\  & Refrigeration (electrical) & 0.35 & 0.96 \\  & Stove, water \& space heating (thermal) & 0.55 & 1.51 \\  & Total & 3.91 & 10.73 \\ \hline \multirow{4}{*}{Not air-conditioned} & Illumination \& appliances (electrical) & 1.00 & 2.75 \\  & Refrigeration (electrical) & 0.27 & 0.74 \\ \cline{1-1}  & Stove, water \& space heating (thermal) & 0.43 & 1.18 \\ \cline{1-1}  & Total & 1.70 & 4.67 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Energy use of different activities in air-conditioned and not air-conditioned dwellings in Mexico. Figure 3: Energy use onto the Mexican residential sector in 2015. In order to validate the energy use analysis, a comparison between the national energy use calculated in this paper and given by refs. [35; 36] is shown in Table 5. For this, the annual use of both studies was multiplied by 6.93 million of air-conditioning dwellings and by 24.44 million of not air-conditioning, respectively. Thereby, the total of energy use shown in Table 5 is only related to electricity. It is noticed that the figures have the same order of magnitude, and after being compared to the figures provided by the Ministry of Energy for the same year (54.60 TWh) [31] the figures are considered as valid. Moreover, from now on, only electricity is considered in the analysis presented in this paper.