2.2.2. Monthly Analysis

Monthly characteristics are examined through the monthly average share to identify the monthly pattern of residential electricity consumption in the city. The analyses cover the 12 months electricity data from the load profiles results. Besides to identify the potential energy savings, the monthly analysis is beneficial to plan the generation and distribution of power utilities.

**Table 5.** Division of the seasons based on meteorological concept in the selected year: 2015 (*date format: dd-mm-yyyy*). In this case, the start day of the winter season is 01 December 2015. Winter lasts from 01 December 2015 until 28 February 2015, spring lasts from 01 March 2015 to 31 May 2015, summer lasts from 01 June 2015 to 31 August 2015, and autumn from 01 September 2015 to 30 November 2015. Therefore, the winter season has the fewest number of days.


The meteorological concept (Table 5) is quite simple and is the most widely used, being broken down into four three-month periods. Winter has the three coldest months in the Northern Hemisphere, namely December, January and February. Spring runs from March to May, summer from June to August, and the other months belong to autumn [59]. Hence, a seasonal electricity load profiles model is proposed as follows in Equation (7):

$$\text{Ts\%} = \text{S}w\% + \text{S}sp\% \; \; + \text{S}sm\% \; \; \; + \text{S}a\% \; \tag{7}$$

where *Ts*% is the total of seasons share, *Sw*% is the share of Winter season, *Ssp*% is the share of Spring season, *Ssm*% is the share of Summer season and Sa is the share of Autumn season.

## 2.2.3. Days Analysis

The days analysis is provided based on the hourly average share load of the days in each season and the typical days share in each season. The typical days are the selected days, of one weekday and one weekend day in each season as listed in Table 6. None of the selected days listed below in Table 6 is a national holiday in the selected city, meaning that the selected days represent people's normal daily activities on a weekday and at weekends.

**Table 6.** Selected typical days (*date format: yyyy-mm-dd*).

