Slovenia Electricity Generation is set to reach 16.53 Terawatthours by 2026 from 15.94 Terawatthours, will decrease by 0.7% per year. Since 1990, the supply grew 2.7% year on year totalising 28,470 Terawatthours. The United States, India and Russia respectively were numbers 2, 3 and 4 in this ranking.