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Data & Statistics

Chile: Growth in Electricity Transmission Network [free access]

February 10, 2022

As of December 2021, Chile's transmission network comprised about 29,607 km of line length at 110 kV and above voltage levels. Of the total line length, the majority or about 60 per cent was at 220 kV, followed by 20 per cent at 110 kV, 16 per cent at 500 kV and 4 per cent at 154 kV. The main transmission companies operating in the country are Transelec S.A., Transnet S.A., AES Gener S.A., Engie and Engie Energía Chile S.A. (formerly known as E-CL S.A.).

 

Between 2017 and 2021, Chile’s transmission line network grew at a CAGR of 3.29 per cent, with net additions of close to 3,600 km. The country’s transmission network saw tremendous growth at 500 kV, which increased from just 1,597 km in 2017 to 4,747 km by 2021, translating to a CAGR of 31.3 per cent during the period.

 

Table 3: Growth in Chile's transmission line length (km)

Voltage (kV)

2017

2018

2019

2020

2021

110 kV

5,892

5,892

6,241

5,598

5,955

154 kV

1,499

1,499

1,474

1,438

1,300

220 kV

17,027

17,027

16,571

16,853

17,606

500 kV

1,597

1,597

4,747

4,747

4,747

Total

26,015

26,015

29,033

28,636

29,607

Annual growth rate (%) 

(0.2)

-

11.6

(1.4)

3.4

Note: Data for 2019, 2020 and 2021 also includes line length of Sistemas Medianos or Medium Electric System.

Source: Comision Nacional de Energia; Coordinador Eléctrico Nacional; Global Transmission Research

 

The transformer capacity stood at 34.6 GVA as of 2021, increasing from 28.5 GVA in 2017 and registering a CAGR of around 4.98 per cent.

 

Figure 2: Growth in Chile’s transformer capacity (MVA)

 

Note: E - Data for 2017-20 is based on projects commissioned during each of the years. 2021 data is based on the assumption that no capacity addition took place during the year.

Source: Comision Nacional de Energia; Coordinador Eléctrico Nacional; Global Transmission Research