Jan 1947
Launch
Lucky Chemical Co., Ltd., the company that becomes LG Chem, is established in January 1947 and starts out making cosmetics; it founds its rechargeable battery factory in the Cheongju Complex in September 1999 (LG Chem company history, lgchem.com).
Dec 2019
Partnership
LG Chem's board decides on 5 Dec 2019 to contribute USD 916.0 million for 50% of a battery joint venture with General Motors, Ultium Cells LLC in Lordstown, Ohio (LG Chem disclosures, DART, 5 and 6 Dec 2019; GM Form 10-K for 2020, 10 Feb 2021).
Dec 2020
Milestone
LG Chem spins off its battery business into the unlisted LG Energy Solution on 1 Dec 2020, keeping all of its shares (LG Chem split decision and completion reports, DART, 17 Sep and 4 Dec 2020).
Apr 2021
Expansion
LG Energy Solution's board approves on 16 Apr 2021 a KRW 1,064.2 billion (USD 933.5 million) investment in Ultium Cells LLC, its 50-50 joint venture with GM, to set up a second EV battery plant (LG Chem disclosure on its subsidiary, DART, 16 Apr 2021).
Jan 2022
Milestone
LG Energy Solution lists on the KOSPI on 27 Jan 2022 after offering 42,500,000 shares at KRW 300,000, KRW 12.75 trillion in total (LG Energy Solution IPO subscription notice, Jan 2022; LG Energy Solution news, 27 Jan 2022).
Mar 2022
Partnership
Stellantis and LG Energy Solution announce on 23 Mar 2022 a joint venture battery plant in Windsor, Ontario: over CAD 5 billion (USD 4.1 billion) and more than 45 GWh a year, with production planned from the first quarter of 2024 (LG Energy Solution press release, 23 Mar 2022).
Aug 2022
Partnership
LG Energy Solution and Honda announce on 29 Aug 2022 a USD 4.4 billion US battery joint venture with about 40 GWh a year of capacity and mass production targeted for the end of 2025 (Honda news release, 29 Aug 2022).
Aug 2022
Regulatory
The Inflation Reduction Act, signed on 16 Aug 2022, adds the section 45X advanced manufacturing production credit to the tax code: $35 per kWh of battery cell capacity and $10 per kWh of battery module capacity (Public Law 117-169, section 13502; 26 U.S.C. 45X).
Aug 2022
Commercial
Ultium Cells, the joint venture of GM and LG Energy Solution, started initial battery cell production at its Warren, Ohio plant in August 2022 (Ultium Cells release, 5 Dec 2024; GM release, 29 Sep 2022).
Mar 2023
Expansion
LG Energy Solution announces on 24 Mar 2023 a KRW 7.2 trillion ($5.5B) battery complex in Queen Creek, Arizona: a cylindrical EV battery plant of 27 GWh (KRW 4.2 trillion, with mass production of 2170 cells targeted for 2025) and an LFP pouch-type ESS plant of 16 GWh (KRW 3 trillion, with production in 2026). Its 4 Apr 2024 update says groundbreaking took place in November 2023 and puts the plan at 36 GWh of 46-Series cylindrical and 17 GWh of LFP ESS batteries (LG Energy Solution press releases, 24 Mar 2023 and 4 Apr 2024).
Apr 2023
Regulatory
LG Energy Solution reports first-quarter 2023 revenue of KRW 8.75 trillion and operating profit of KRW 633.2 billion, and its quarterly report books KRW 100.3 billion of other operating revenue as the expected US Inflation Reduction Act advanced manufacturing production tax credit, which took effect on 1 Jan 2023 (LG Energy Solution DART disclosures, 26 Apr 2023 and 15 May 2023).
May 2023
Partnership
LG Energy Solution and Hyundai Motor Group sign a memorandum of understanding on 26 May 2023 for a 50:50 battery cell manufacturing joint venture in the US, with an investment of over $4.3B (KRW 5.7 trillion) and 30 GWh a year of capacity at a site in Bryan County, Georgia next to Hyundai Motor Group Metaplant America, with construction to start in the second half of 2023 and production at the end of 2025 at the earliest (LG Energy Solution press release, 26 May 2023).
Apr 2024
Paused
LG Energy Solution's 4 Apr 2024 update on its Arizona complex says the 46-Series cylindrical EV plant (36 GWh) will be completed in late 2025 and the LFP ESS plant (17 GWh) the year after, with both starting production in 2026, against the 2025 start for cylindrical cells it announced on 24 Mar 2023 (LG Energy Solution press releases, 4 Apr 2024 and 24 Mar 2023).
2025
Expansion
LG Energy Solution takes full ownership of the Ultium Cells Lansing, Michigan plant by buying GM's stake: GM announced its agreement to sell the stake in Dec 2024 and LGES lists the acquisition as completed in 2025, converting the JV plant to a wholly-owned LGES facility (GM Form 8-K, 8 Jan 2026; LGES company history). The $2B price and the cell-supply terms are Not confirmed in a primary source as of 2026-10-25.
Aug 2026
Commercial
Honda's 2026 Digital FactBook lists L-H Battery Company's Jeffersonville, Ohio plant with a 2026 production year, hybrid batteries and energy storage systems as its models, a projected investment of $4.4 billion and no capacity figure yet, and says the joint venture began as an EV pouch-cell plant and is now planning to produce energy storage systems and hybrid batteries. LGES's 2026 half-year report says it entered a sale-and-leaseback of the plant building, still under construction at the end of 2025, with Honda Development and Manufacturing of America, and that it had contributed USD 1,801 million of its USD 1,802 million commitment to the joint venture (Honda 2026 Digital FactBook, hondanews.com, as of 2026-10-29; LG Energy Solution 2026 half-year report, DART, 13 Aug 2026).
LG Energy Solution