Japanese Big Four law firm Nishimura & Asahi has advised Honda Motor on its $4.4 billion lithium-ion battery factory joint venture in the U.S. with South Korea’s LG Energy Solution.

Battery makers are looking to increase production in the U.S. where a shift toward electric vehicles (EV) could increase as the country implements stricter regulations and tightens tax credit eligibility, Reuters reported.

The two companies aim for annual production capacity of approximately 40 gigawatt hour with the batteries supplied exclusively to Honda facilities in North America to power Honda’s Acura EV models, Reuters added.

The Nishimura team was led by partners Ryutaro Nakayama, Yuki Oi, Satoshi Niki, and Kazumaro Kobayashi.