The Energy Regulatory Office (ERO) regulates Poland's energy sector and promotes competition in energy markets. The ERO was established in 1998 and is headed by the President of ERO. Key responsibilities of the ERO include regulating energy companies, promoting competition, balancing interests of companies and consumers, granting licenses, approving tariffs, and resolving disputes. The ERO aims to ensure sustainable development, competition, energy security and efficient use of energy resources.