Tirunelveli is a major area for wind-power generation. Most wind-power-generation units in Tamil Nadu are located in Tirunelveli and Kanyakumari Districts. In 2005 they contributed 2036.9 MW to the state power-generation capacity. Many private, multinational wind companies are located on the outskirts of the city. In June 2007 the Tata Group signed a memorandum of understanding with the state government to open a titanium dioxide plant, with an estimated value of 25 billion, in Tirunelveli District and Thoothukudi District. However, the state government put the project on hold after increasing protests against it.