Public Sector Undertakings (PSUs) are government-owned corporations or companies that operate in various sectors of the economy. They are established to provide essential services, promote economic development, and generate employment. PSUs play a crucial role in industries such as energy, transportation, and telecommunications, often focusing on public welfare rather than just profit. These enterprises are funded and managed by the government, which holds a majority stake. PSUs contribute significantly to the national economy by providing goods and services, ensuring fair pricing, and supporting social initiatives. They also help in reducing regional disparities by promoting industrialization in less developed areas.