The company's unit, Panasonic Energy, will install a 15th production line at Gigafactory Nevada, the report said.
The report comes after Panasonic said last month it plans to build at least two new factories for the production of Tesla 4680 battery cells in North America by 2030.
At the time, Panasonic had not disclosed where in North America it would add the production capacity.
Tesla recently told Panasonic it would "buy as much as can make", according to an executive at the Japanese manufacturer, the report added.
Panasonic is running a pilot 4680 production line at its Wakayama factory in Japan, while Tesla is already producing the 4680 battery cells, which Musk has touted as being key to making cheaper and compelling electric cars.
Persons:
Tesla, Musk, Samrhitha, Pooja Desai
Organizations:
Japan's Panasonic Holdings Corp, Tesla Inc, Nikkei, Panasonic Energy, Panasonic, Tesla, Thomson
Locations:
Nevada, Gigafactory Nevada, North America, Wakayama, Japan, Bengaluru