Reliance Industries, an Indian oil refining company, has unveiled its swappable and multipurpose battery storage technology for electric vehicles (EVs). This move is part of the company's initiative to embrace green energy and diversify from its core oil-to-chemical business. Meanwhile, Tesla Inc, which plans to produce and sell battery storage systems in India, has submitted a proposal seeking incentives to establish a factory in the country. Reliance's batteries are easily swappable at designated stations or recharged at home, especially with rooftop solar panels, another product that Reliance plans to introduce.