Blue Cobbles, Kota Brown Natural and Kota Brown Polished. Industries Kota is one of the industrial hubs in northern India, with chemical, cement, engineering and power plants based there. The total number of industrial units in the district in 2010–11 stood at 12908 with 705 registered units. The district power plants show annual growth of 15–20% due to their strategic locations. Power plants Kota is surrounded by five power stations within its 50 km radius. Kota Super Thermal Power Plant – thermal Rajasthan Atomic Power Station in Rawatbhata Chittorgarh district (65 kilometres from Kota) – nuclear NTPC Anta Gas Power Plant in Antah Baran district (50 kilometers from Kota) – gas Jawahar Sagar Power Plant – hydro Kalisindh Thermal Power Station (in Jhalrapatan, Jhalawar) – thermal Surya Chambal Power Plant in Rangpur Kota district - biomass Education The city is especially known in India as a center for the preparation of various national level competitive examinations through which the students seek admissions in various engineering and medical colleges of the country. Often termed as the "Kota Factory", the town contains more than 40 large coaching institutes for aspiring students trying to pass entrance exams for Indian Institutes of Technology (IIT), through the IIT JEE, other engineering colleges and prominent medical colleges of India. Since 2000, the city has emerged as a popular coaching destination for competitive exams preparation and for profit educational services. The education sector of Kota has become one of the major contributors to the city's economy. Kota is popularly referred to as "the coaching capital of India". Over 150,000 students from all over the country flock every year towards the city for preparation of various exams such as IIT-JEE and NEET-UG etc. Many hostels and PGs are located in Kota near the vicinity of coaching centres for students. Students live here for 2–3 years and prepare for the exams. The annual turnover of the Kota coaching industry is about ₹1500 crore. The majority of the students here are enrolled in schools, providing the facility of "dummy schooling", which gives students admissions without the need to attend it regularly. However, it is an illegal practice. In 2019, The Viral Fever launched a Web Series called Kota Factory to shed light on the life of students who study at Kota. Kota's emergence as a coaching hub began in 1985 when Vinod Kumar Bansal, an engineer set up Bansal Classes