Panasonic looks likely to begin producing a lithium-ion battery batteries in China in partnership with Tesla. The announcement came from the company’s CEO Kazuhiro Tsuga on the occasion of the earning conference for its 2018 financials, which was held on Thursday, according to Reuters.

No more details, however, were given about the factory’s size or the amount of the required investment for project.

Earlier this year, Panasonic started manufacturing lithium-ion batteries for Tesla’s energy storage products and electric vehicles in the U.S. state of Nevada – at its much fabled Gigafactory. The two companies also collaborated on the production heterojunction with intrinsic thin layer (HIT) solar cells in Buffalo, New York.

The group’s solar business, however, was listed among the low-profitable divisions for last year, although the Eco Solutions segment, in which battery storage and solar is included, saw revenues and profits increase slightly. The Eco Solutions segment registered a 4.5% increase in sales at JPY 1,623.5 billion. The division operating profit also grew slightly from JPY 64.2 billion to JPY 72.5 million.

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In particular, Panasonic’s electrical construction materials business in India, Turkey and Vietnam, water-related products in Japan, as well as the heat-exchanging ventilation units in China, and electrical construction materials business, contributed to the positive results of the segment in the latest fiscal year.

As for its solar business, Panasonic said in its financial statements that it started selling individual cells in addition to its conventional module sales, and that it has reviewed the module production structure, including winding up module production at its Shiga plant. Operations at Shiga were expected to be shut down by the end of the first quarter of this year. Earlier this year, Panasonic ceased production of silicon ingots at a factory in the U.S. state of Oregon.

Meanwhile, the group’s total sales increased from JPY 7,343.7 billion in 2017 to JPY 7,982.1 billion last year, while operating profit grew by 37% to JPY 380.5 billion.