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Cambodia: Planned Generation Capacity and Transmission Projects [free access]

August 13, 2020

As per the EAC, the electricity demand in the country is expected to grow from 11,800 GWh in 2020 to 18,655 GWh in 2029, representing a CAGR of about 5.22 per cent.

 

Figure 1: Forecasted growth in electricity demand (GWh)

 

 

Note: Data represents demand in a business-as-usual (BAU) scenario

Source: Ministry of Industry, Mines and Energy; Global Transmission Research

 

In response, the country plans to add around 2 GW of new generation capacity over the next decade. Of the total planned capacity, 86 per cent will be thermal capacity and 14 per cent will be hydro-based.

 

Figure 2: Planned addition to generation capacity in Cambodia (MW)

Total capacity addition: 1,970 MW

 

 

 

Note: Data is estimated based on projects expected to be commissioned during 2020–30.

Source: Electricity Authority of Cambodia (EAC); Global Transmission Research


Cambodia’s transmission system operator (TSO) EDC is currently undertaking various high voltage transmission projects to strengthen the grid network and further develop and integrate the upcoming and existing power generation sources into one system.

 

The country is also focusing on establishing a cross-border network. One significant cross-border project under construction is the 500 kV Ban Hatxan (Lao PDR)–Stung Treng (Cambodia) interconnection project. The project is expected to greatly benefit Cambodia by increasing electricity access, reducing power supply shortages and easing high electricity prices.

 

A key domestic project currently under construction is  the Stung Tatay–Phnom Penh Transmission System Project, which entails the construction of a 230 kV transmission system connecting the Stung Tatay HPP to Phnom Penh.

 

Another important project in the pipeline is the Phnom Penh City Transmission and Distribution System Expansion Project Phase 2 , which aims to increase the stability of the electricity supply in the metropolitan area. The transmission component of the project involves the construction of two new substations and the expansion of two substations; and the installation of new 230 kV and 115 kV overhead and underground transmission lines in the capital city of Phnom Penh. The project is receiving financial support from the Japan International Cooperation Agency (JICA).

 

Table 1: Key planned transmission projects

Name of project

Voltage (kV)

Length (km)

Scheduled completion

Domestic projects

Phnom Penh City Transmission and Distribution System Expansion Project, Phase 2

230 kV and 115 kV

NA

2022

Stung Tatay–Phnom Penh Transmission System Project

230

220

2020

230 kV Transmission and Transformation Project (Part 2, Phase II)

230

157 (85 km at 230 kV and 72 km at 110 kV)

NA

230 kV Transmission and Transformation (Phase II) Project

230

275

2020

230 kV Kampong Thom–Preah Vihear–Lao PDR Border Transmission Line Project

230

48

2020

Regional interconnectors

Kampong Cham (Cambodia)–Tay Ninh (Vietnam) Interconnection

NA

100

NA

Lower Se San 2 HPP (Cambodia)–Pleiku (Vietnam) Interconnection

NA

230

NA

Wangnoi (Thailand)–Banteay Mean Chey (Cambodia)–Siem Reap (Cambodia)–Kampong Cham (Cambodia) Interconnection

NA

500

NA

Yangon (Myanmar)–Yunnan (Cambodia) Interconnection

NA

500

NA

Note: NA – not available

Source: Global Transmission Research