SK On

SK온 / 에스케이온 주식회사

A South Korean manufacturer of lithium-ion battery cells for electric vehicles and energy storage systems, indirectly supporting AI-driven electricity demand through stationary power infrastructure.

Unlisted subsidiary
Profile as of September 13, 2026
#137 in the AsiaAI Tech Index
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SK On has real strategic value as a qualified automotive battery supplier with high-nickel cell technology and expanding North American production. Its main constraint is economic rather than technical, as weak EV demand and heavy factory costs keep the business loss-making. The AI opportunity is secondary, depending on converting broader electricity-storage demand into profitable ESS cell volumes.

Key figures

Revenue FY2025: 6.9782 trillion won
Revenue growth FY2025: Not disclosed
Operating margin FY2025: Minus 13.4% Estimate
Net income FY2025: Not disclosed
R&D spend FY2025: Not disclosed
Capital expenditure FY2025: Not disclosed
Operating loss FY2025: 931.9 billion won
Q4 revenue Q4 2025: 1.4572 trillion won
Georgia JV capacity Planned: 35 gigawatt-hours
Target ESS orders 2026: More than 20 gigawatt-hours

Overview

SK On was established in October 2021 as a battery-business spin-off from SK Innovation, part of the SK Group. It supplies lithium-ion battery cells, modules, and packs, focusing on high-nickel nickel-cobalt-manganese cells for electric vehicles. The company is also expanding into lithium iron phosphate cells for stationary energy storage systems. Its products are electrochemical storage hardware, not semiconductor or AI-compute components.

As an unlisted subsidiary, SK On operates industrial-scale factories across South Korea, the United States, Europe, and China. It serves major global automakers, including Hyundai Motor Group, Ford, Volkswagen, and Mercedes-Benz. While it does not manufacture AI chips or servers, its batteries provide essential power infrastructure for electrified edge devices and energy storage systems.

The AI angle

SK On’s relevance to AI is indirect and demand-led, running through electricity infrastructure rather than AI chips. Data-center construction and AI inference workloads raise demand for grid capacity, backup power, and stationary energy storage. SK On’s exposure is through its energy storage system cell orders, including a disclosed 9 gigawatt-hour LFP supply agreement with NeoVolta beginning in 2027 and a stated goal of more than 20 gigawatt-hours of global ESS orders in 2026.

It does not supply AI semiconductors, servers, networking, cloud platforms, or AI software. Its products are strictly electrochemical storage hardware. SK On matters most in the power and infrastructure layer because its batteries store electrical energy for EVs and potentially stationary storage. The AI opportunity depends on SK On converting broader electricity-storage demand into profitable ESS cell volumes, not on direct demand from AI chips or cloud operators. Its secondary exposure comes through edge devices, as it supplies EV battery cells for vehicles that may contain advanced driver-assistance or edge-compute systems.

Technology and moat

SK On’s core technical position is in high-nickel NCM chemistry. The company mass-produced NCM622 cells in 2014 and NCM811 cells in 2018, and it pursues NCM 9½½ as a high-energy-density product-development direction. High-nickel cathodes can raise energy density, but they also require strict control of thermal performance, cycle life, manufacturing yield, and customer validation.

Its difficult-to-copy assets are less about a single patented cell design than about accumulated manufacturing know-how, qualified automotive programs, customer-specific cell formats, industrial-scale factories, and lengthy vehicle qualification cycles. Automakers typically cannot exchange cell suppliers without extensive validation of pack design, thermal management, software calibration, safety performance, and manufacturing quality. Against LG Energy Solution and Samsung SDI, SK On competes in premium EV cells and North American localization, though it faces competitors like CATL and BYD with substantially greater scale and stronger LFP positioning.

Five-pillar assessment

Scale and market position: A major global EV battery supplier with expanding North American production, though smaller in scale than CATL, BYD, and LG Energy Solution.
Technology and R&D: Strong position in high-nickel NCM chemistry and automotive-scale manufacturing, with a developing LFP product line for stationary energy storage.
Supply-chain centrality: Key supplier to Hyundai Motor Group, Ford, Volkswagen, and Mercedes-Benz, with significant joint-venture manufacturing partnerships.
Financial momentum: Facing financial pressure from weak North American EV demand and high capital intensity, resulting in a substantial 2025 operating loss.
Governance and quality: An unlisted subsidiary controlled by SK Innovation, heavily reliant on SK Group for capital allocation and strategic direction.

Supply chain and relationships

SK On depends on upstream suppliers for cathode active materials, anode materials, lithium, nickel, cobalt, graphite, separators, electrolyte, formation equipment, and manufacturing machinery. Named suppliers for each input are not disclosed in the cited material. Its upstream reliance is material because a cell maker cannot substitute qualified materials or production equipment quickly without requalification by automotive customers.

Downstream, SK On’s publicly identified automotive customers include Hyundai Motor Group, Mercedes-Benz, Ford, and Volkswagen. It also supplies NeoVolta for energy storage systems. Customer concentration is high, clustering around a limited set of global automakers, though specific revenue shares are not disclosed. If SK On stopped shipping, the immediate disruption would fall on EV and ESS programs using its qualified battery cells and on production sites built around its specifications.

Customers

Ford Motor CompanyEV battery supply and BlueOval SK factory projects
Hyundai Motor GroupSupports Hyundai, Kia, and Genesis EV programs
Volkswagen GroupCells used in Volkswagen ID.4 and ID.7 vehicles
Mercedes-Benz GroupIdentified by SNE Research as using SK On batteries
NeoVolta9 gigawatt-hours of LFP cells over five years from 2027

Partners

Ford Motor CompanyBlueOval SK joint venture for U.S. battery plants
Hyundai Motor Group50 percent joint venture for a Georgia battery-cell plant

Competitors

LG Energy SolutionInferredCompetes globally for EV and stationary-storage battery-cell contracts
Samsung SDIInferredCompetes in Korean and global EV battery markets
CATLInferredCompetes in global EV batteries and has greater LFP scale
BYDInferredCompetes in LFP batteries and vertically integrated EV supply

Geopolitics and risk

SK On’s U.S. manufacturing footprint is strategically useful because automotive customers seek North American cell supply and potential eligibility for U.S. industrial incentives. That advantage is constrained by EV-demand volatility, high fixed costs, construction risk, and the need to keep plants full enough to absorb depreciation and labor costs. The company cited reduced advanced-manufacturing production-credit benefits as a factor in its weak 2025 results.

SK On also faces structural pressure from Chinese competitors like CATL and BYD, which possess substantial scale, domestic-market volume, LFP capability, and supply-chain depth. Critical-mineral supply chains for high-nickel batteries create additional geopolitical vulnerability, as lithium, nickel, cobalt, and graphite are globally traded inputs with concentrated processing capacity. Furthermore, U.S.-China trade restrictions, tariffs, and local-content rules can reshape sourcing and customer eligibility for battery incentives.

Risk matrix
Risk	Severity	Why it matters
North American EV-demand slowdown	High	Weak demand leaves expensive U.S. factories exposed to lower utilization.
U.S. policy and tax-credit exposure	High	Profitability is highly sensitive to U.S. fiscal and industrial-policy changes.
High capital intensity and leverage pressure	High	Battery factories require multibillion-won investment before utilization stabilizes.
Automotive customer concentration	High	Publicly identified customers cluster around a limited set of global automakers.
Factory ramp and qualification risk	High	U.S. capacity value depends on safely reaching yield and utilization targets.
China battery competition	High	CATL and BYD place structural pressure on Korean producers' pricing and technology.
Critical-mineral supply exposure	Medium	Concentrated processing capacity creates cost and geopolitical vulnerability for high-nickel production.
U.S.-China trade restrictions	Medium	Tariffs and local-content rules can reshape sourcing and customer eligibility.

Governance and ownership

SK On is an unlisted, privately held operating subsidiary within the SK Group chaebol. It is controlled through SK Innovation, a listed operating company, rather than by public minority shareholders in SK On itself. SK Group chairman Chey Tae-won also holds chairman roles at SK Inc., SK Hynix, and SK Innovation.

The publicly confirmed operating leadership consists of co-CEOs Lee Seok-hee and Lee Young-wook. The central governance issue for creditors and investors is not minority-shareholder governance at SK On, but whether SK Innovation and SK Group can fund battery expansion while preserving balance-sheet flexibility. SK On is not state-owned, and its governance posture is shaped by group-level capital allocation and cross-company industrial projects.

What to watch

Whether SK On's 2026 battery operating loss narrows after the 931.9 billion won FY2025 operating loss.
Whether North American EV demand and U.S. policy support recover sufficiently to raise utilization at U.S. plants.
Completion terms and timing for the transfer of the 45 gigawatt-hour Tennessee BlueOval SK facility.
Actual production start and utilization at the 35 gigawatt-hour Hyundai Motor Group joint-venture plant in Georgia.
Whether the NeoVolta agreement converts into recurring LFP ESS shipments from 2027.
The balance between high-nickel NCM technology and LFP deployment against Chinese competitors.

Recent developments

August 31, 2026Signed an agreement to supply NeoVolta with 9 gigawatt-hours of LFP cells over five years from 2027.
January 28, 2026Reported FY2025 revenue of 6.9782 trillion won and an operating loss of 931.9 billion won.
December 11, 2025SK On and Ford announced a restructuring of BlueOval SK, with SK On taking the Tennessee plant.
December 2, 2025SNE Research reported SK On battery usage in EVs increased with Hyundai, Volkswagen, and Ford sales.
October 30, 2025SK Group announced Lee Young-wook would become President alongside incumbent Lee Seok-hee.
February 1, 2025Announced merger with SK Enterm, expected to add approximately 500 billion won in EBITDA.

Coverage on AsiaAI.FYI

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About this profile

Compiled with AI-assisted research from company filings, market data, and published reporting as of September 13, 2026, then reviewed by AsiaAI.FYI. Figures marked Estimate are not company-reported. Check primary filings before relying on any number.

Confidence: B. Identity, group affiliation, customer relationships, and FY2025 headline figures have reasonable support, but standalone audited financial detail, headcount, and R&D expense are undisclosed.

Main sources: Korean regulatory filing index; SK Group and SK On corporate releases; SK Innovation earnings materials; Automaker joint-venture announcements; Battery-market research; Business press.

All 61 sources

Position in the AI stack

SK On sits in the power and infrastructure layer, supplying battery cells that can support stationary energy storage for power-intensive AI data centers.

Legal name: SK On Co., Ltd.
Headquarters: Seoul, Republic of Korea
Founded: 2021
Leadership: Lee Seok-hee / 이석희, President and co-CEO
Lee Young-wook / 이영욱, President and co-CEO
Ownership: Unlisted subsidiary; part of SK Group
Business: Lithium-ion battery cells for electric vehicles and energy storage systems
Sector: Batteries & Energy
Website: sk-on.com