EEC currently has a total of 56 substations that are spread across the kingdom of Eswatini.

Maguga Substation	11KV & 66KV
Edwaleni Substation	3.3KV, 11KV & 66KV
Stonehenge Substation	132KV, 66KV & 11KV
Mankayane Substation	66KV & 11KV
Eswatini Paper Mills Substation	66KV & 11KV
Usuthu Substation	66KV, 11KV & 6.6KV
Malkerns Substation	66KV & 11KV
Mhlambanyatsi Substation	66KV & 6.6KV
Ezulwini Substation	3.3KV, 66KV & 11KV
Maguduza Substation	11KV & 66KV
Edwaleni II Substation	400KV &132KV
Big Bend Substation	66KV, 11KV
Hlathikulu Substation	66KV & 11KV
Sithobela Substation	66KV & 11KV
River Bank Substation	66KV & 11KV
Ncandweni Substation	132KV, 66KV & 11KV
Lawuba Substation	66KV & 11KV
Hhelehhele Substation	132KV & 66KV
Mpisi Substation	66KV & 11KV
Mnkinkomo Substation	132KV & 11KV
Magwabayi Substation	66KV & 11KV
Maloma Substation	66KV & 11KV
Siphofaneni Substation	66KV & 11KV
Nhlangano 1 Substation	66KV & 11KV
Nhlangano 2 Substation	132KV, 66KV & 11KV
Matsapha Substation	66KV & 11KV
Manzini Substation	66KV & 11KV
Moses Hlophe Substation	132KV & 11kV
Manzini Substation	66KV & 11KV
Thompson Substation	66KV &  11KV
Sidvokodvo Substation	66KV &  11KV
Pigg’s Peak Substation	66KV & 11KV
Pine Valley Substation	66KV & 11KV
Siphocosini Substation	66KV & 11KV
Lobamba Substation	66KV & 11KV
Ngwenya 1 Substation	66KV & 11KV
Ngwenya 1 Substation	66KV &  11KV
Nkoyoyo Substation	66KV & 11KV
Kent Rock Substation	66KV & 11KV
Mayiwane Substation	66KV &  11KV
Dvokolwako Substation	66KV & 11KV
Balegane Substation	66KV & 11KV
Endzingeni Substation	66KV & 11KV
Nkhaba Substation	66KV & 11KV
Ngomane Substation	66KV & 11KV
Sihhoye Substation	66KV & 11KV
St Phillips Substation	66KV &11KV
Simunye Substation	66KV & 11KV
Tabankhulu Substation	66KV & 11KV
Mhlume Substation	66KV & 11KV
Siteki Substation	66KV &11KV
Sikhuphe Substation	66KV & 11KV
Mpaka Substation	66KV & 11KV
Kalanga Substation	132KV, 66KV & 11KV
Nsoko Substation	66KV & 11KV
Lawuba Substation (New One)	66KV &11KV