Electrodistribution Grid West EAD is a sole shareholder company, 100% owned by Eastern European Electric Company B.V., which is part of the Eurohold Bulgaria AD group. ERM Zapad distributes electricity in ten regions of Western Bulgaria. The company distributes electricity in a territory with an area of 40,000 square km and a population of nearly 3,000,000 inhabitants. ERM Zapad maintains and develops 58,000 km of network and serves over 2,100,000 customers.