How Bulgaria become a global leader in battery storage and what this means for the country's grid and energy market?

The international energy sector currently has a curious case study in an unlikely place: Bulgaria , a country in southeastern Europe with a population of just 6.4 million, now has one of the world's highest ratios of battery storage to total power capacity, outpacing markets like California, Germany and China . In less than two years, Bulgaria's battery storage capacity has gone from zero to making up nearly a quarter of the country's total installed power capacity, fueled by EU funding and private capital worth close to €3 billion ($3.4 billion), according to calculations by Bulgaria's leading business publication Capital .