Electricity Substations
- Bulgaria - 750/400/110 кV
- Sofia south - 220/110 кV
- Stolnik - 400/220/110/10 кV
- Kazichane - 400/220/110 кV
- Mizia - 400/220/110 кV
- Plovdiv south - 400/220/110 кV
- Varna east - 110/20 кV
- Shumen center - 110/10 кV
- Chomakovtzi - 110/20/10 кV
- Peshtera - 110/20 кV
- Vratza 1 - 110/20/10 кV
- Devnia - 110/6 кV
- Medet - 110/6 кV
- ... and others in country & abroad ...