Homegrown auto major Tata Motors on Tuesday said it will raise $1 billion (Rs 7,500 crore) in its passenger electric vehicle business from TPG Rise Climate at a valuation of up to $9.1 billion. Tata Motors Ltd (TML) and TPG Rise Climate, the dedicated climate investing strategy of private investment firm TPG, have entered into a binding agreement in this regard. Under the agreement, TPG Rise Climate along with its co-investor ADQ, will invest in a subsidiary of Tata Motors that will be newly incorporated, the company said in a statement.