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Global TSOs: Growth in transmission networks of leading TSOs [free access]

April 18, 2019

As per Global Transmission Research, the leading 215 transmission network developers and operators across the globe together owned 4,141,230 km of transmission lines.  Of this, utilities in the Asia Pacific region accounted for around 47 per cent of the total line length, followed by North American companies with a 19 per cent share. Meanwhile, European TSOs accounted for a 16 per cent share, Latin American companies for a 10 per cent share, and Middle Eastern and African utilities accounted for a 4 per cent share each.

 

The tracked developers and utilities (exclusive of the North American companies) owned 11,895,940 MVA of transformer capacity. Of this, Asia Pacific-based utilities accounted for around 67 per cent of the total transformer capacity, followed by European TSOs with an 18 per cent share. Middle Eastern utilities accounted for another 7 per cent share, Latin American companies for a 5 per cent share and African utilities for a 3 per cent share.

 

Figure 1: Growth in electricity transmission network, 2013-17 (km and MVA) 

Source: Global Transmission Research

 

Of the 215 tracked TSOs and developers, 45 major companies owned almost 70 per cent of the total transmission assets. The transmission line lengths of these 45 utilities (combined) grew at a compound annual growth rate (CAGR) of 3.8 per cent over the five-year period spanning 2013–17, while the total transmission capacity (excluding North American utilities) grew by almost double that rate, witnessing a CAGR of 8.3 per cent over the same period.

 

Furthermore, these 45 major operators and developers owned almost 73 per cent of the total transmission line network in 2017. Of this, Asian utilities—State Grid Corporation of China (SGCC), China Southern Power Grid (CSG)—dominated the asset ownership with a combined share of almost 40 per cent. This was followed by Russia’s Federal Grid Company of Unified Energy System (FGC UES) with a 4.7 per cent share. Meanwhile, India’s Powergrid Corporation of India Limited (POWERGRID) accounted for a share of almost 4.2 per cent.   

 

Figure 2: Transmission line length share of leading TSOs, 2017 (%)

Note:CFE–Comisión Federal de Electricidad; CSG–China Southern Power Grid; FGC UES–Federal Grid Company of Unified Energy System; POWERGRID–Powergrid Corporation of India Limited; SGCC–State Grid Corporation of China

Source: Global Transmission Research

 

In terms of transformer capacity (excluding North American utilities), these major 45 operators and developers accounted for almost 72 per cent of the total in 2017. Of this, SGCC and CSG together accounted for a share of 62 per cent, followed by an approximately 4 per cent share each of Saudi Electricity Company (SEC) and FGC UES.

 

Figure 3: Transmission capacity share of leading TSOs, 2017 (%)

Note: CSG–China Southern Power Grid; FGC UES– Federal Grid Company of Unified Energy System; SEC–Saudi Electricity Company; SGCC–State Grid Corporation of China

Source: Global Transmission Research