Panasonic Corp will invest more than 30 billion yen ($256 million) in a New York production facility of Elon Musk's Tesla Motors to make photovoltaic (PV) cells and modules, deepening a partnership of the two companies. Tesla's shares were up 3.5 percent at $220.75 in early trading on Tuesday. Japan's Panasonic, which has been retreating from low-margin consumer electronics to focus more on automotive components and other businesses targeting corporate clients, will make the investment in Tesla's factory in Buffalo, New York.