Key Takeaways Georgia Power is modernizing hydro plants to extend life by 40 years and meet future demand.Recent upgrades include new turbines and control systems at Plants Tugalo and Terrora.Modernization supports reliability, compliance and Georgia's carbon-free energy future.For more than 100 years, The Southern Company’s (SO) largest electric subsidiary,Georgia Power, has been a cornerstone of clean, emission-free energy in the state through its hydroelectric facilities. With 15 owned hydro plants and a ...