Tata Power and BP Alternative Energy Holdings (BP) have ended their more than two decades of relationship in the renewable energy space. The latter, a subsidiary of UK energy giant British Petroleum (BP) has decided to exit Tata BP Solar, its joint venture with Tata Power. According to a note issued by Tata Power, the company has signed a share purchase agreement with BP to buy out 51 percent equity and preference shares of BP in the company, aft er approval from the Reserve Bank of India and the Competition Commission of India. Henceforth, Tata Power will be the sole owner of the company. But, it will continue to source technology from BP till 2013. Th e two companies will soon sign a separate technology sharing agreement in this regard. Although, the reasons for BP exiting the strong joint venture are not sure, some believe it could be because of shrinking profi tability in the solar space.