China’s CATL Joins Next Energy for Battery Storage Business in Japan

CATL will provide the components for storage batteries and its Japanese partner Next Energy & Resources will be in charge of assembly.

CATL Next Energy

China’s CATL, the world’s largest maker of electric car batteries has partnered with Next Energy and will start selling products for homes and businesses in Japan in 2020 with an eye toward tapping a market stunted by high prices.

Under the arrangement announced Thursday, CATL will provide the components for storage batteries and its Japanese partner Next Energy & Resources will be in charge of assembly. They aim to kick off sales by the summer of 2020.

Tokyo has plans to start phasing out its feed-in tariffs for solar power producers beginning November, which will likely push more households to consume the electricity they generate instead of selling it to a utility. CATL aims to tap this shift with much cheaper batteries than those currently available.

A 10-kilowatt-hour battery for homes now costs about $20,000 to $25,000 in Japan, including installation. CATL and Next Energy are looking to possibly sell their batteries for under 1 million yen ($9,200).

“We want to cut prices to about a quarter of current levels in three to five years,” Next Energy President Atsushi Ito said.

Much solar power in Japan is generated through the third-party owner model, in which utilities set up panels on homes and factories. This lowers the power bill for participating households and businesses without requiring them to shell out for installation.

CATL and New Energy will first distribute cheap batteries through the utilities, with plans to eventually consider selling directly to households.

High prices so far have limited the spread of batteries for storing solar power in Japan. The market for those designed for households came to just 80 billion yen in fiscal 2017, according to the JMA Research Institute.

While, CATL produced a total of 21.31 gigawatt-hours of storage capacity in 2018, and is aiming for 50 GWh in 2020. CATL’s deep pockets allow it to produce high-quality products cheaply. At the same time, the rise of inexpensive Chinese batteries — such as through CATL — is expected to pressure Japanese producers to drive down prices as well.

Founded in 2011, CATL became the world’s top automotive battery maker six years later, overtaking Panasonic and other rivals with help from the Chinese government. Its clients include BMW and Volkswagen, and Toyota Motor announced a partnership with the company earlier this month.

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Ayush Verma

Ayush is a staff writer at and writes on renewable energy with a special focus on solar and wind. Prior to this, as an engineering graduate trying to find his niche in the energy journalism segment, he worked as a correspondent for