Japanese policy drives ESS expansion, with GS Yuasa's industrial battery business seen as an earnings inflection point after FY3/29

Overview

This report discusses the impact of Japan's government strategy to promote the energy storage battery industry on GS Yuasa Corp. (6674.T). The Ministry of Economy, Trade and Industry has proposed building a power system manufacturing base with multidimensional competitiveness around energy storage batteries, and aims to expand Japanese companies' energy storage battery-related sales to about 3x within 10 years. Goldman Sachs believes GS Yuasa's short-term earnings are driven by implemented price increases in its core automotive lead-acid battery business, while the company stands to benefit over the medium to long term from growth in grid-scale ESS, renewable energy integration, and AI data center energy storage demand.

Core views

The core view is that GS Yuasa has a stable earnings foundation in automotive lead-acid batteries, and price revisions will strengthen the profitability of that business; although the industrial battery business is still in an early investment stage, it is expected to make a more meaningful earnings contribution from FY3/29 as domestic grid-scale ESS demand expands and the new 2GWh plant begins operations in 2H 2028. Goldman Sachs believes the company trades at a premium valuation relative to Japanese auto parts peers, but still appears inexpensive versus ESS competitors when factoring in the future potential of its industrial battery business, and therefore assigns a Buy rating.

Analysis framework

The report combines analysis of policy catalysts, industry demand, business segment earnings forecasts, and segment valuation. On the policy side, it focuses on the Ministry of Economy, Trade and Industry's energy storage battery strategy, domestic capacity targets, and government subsidies; on the demand side, it focuses on rising renewable energy penetration, data center power consumption, and grid-scale ESS; at the company level, it breaks down the automotive lead-acid battery, industrial battery, and lithium-ion battery businesses, and uses FY3/29E as the valuation benchmark.

Methodology notes

• Valuation methodSOTP

  Sum-of-the-parts valuation

  The 12-month target price of ¥7,200 is based on the SOTP method, using FY3/29E as the valuation benchmark, and applying target P/E multiples separately to the lead-acid battery, industrial battery, and lithium-ion battery businesses.

• Valuation multipleTarget P/E

  Peer historical average and segment multiples

  The report notes that the target P/E of about 15x is derived from peer historical averages, with about 11x for the lead-acid battery business, about 22x for the industrial battery business, and about 10x for the lithium-ion battery business.

• Goldman Sachs research frameworkGS Factor Profile

  Growth, financial returns, valuation multiples, and composite percentile

  The disclosure section explains that GS Factor Profile compares stocks with the market and industry peers using indicators such as growth, financial returns, and valuation multiples, to provide investment context.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• GS Yuasa Corp. (6674.T)

  Primary subject of the report, Buy-rated stock

  Strengths

  The automotive lead-acid battery business has a stable earnings foundation, and price revisions improve profitability; the industrial battery and ESS businesses benefit from domestic demand in Japan, government subsidies, and support from economic security policy.

  Weaknesses

  The current medium-term plan period is still an early investment stage for industrial batteries, with a relatively heavy near-term investment burden; valuation is high relative to Japanese domestic auto parts companies.

  Comparison

  Goldman Sachs believes the company is not expensive relative to ESS business competitors when valued on the future potential of its industrial battery business.

  Risks

  Cost burden from the Honda BEV project, delays in bringing the new 2GWh battery plant online, and elevated crude oil prices.

• Japan grid-scale ESS market

  Growth driver for GS Yuasa's industrial battery business

  Strengths

  Rising renewable energy penetration, AI data center power demand, and policy support are jointly driving energy storage demand.

  Weaknesses

  Demand realization depends on grid investment, subsidy policy, project construction pace, and progress in building the domestic supply chain.

  Comparison

  The report emphasizes that domestic capacity and supply chain construction in Japan carry greater economic security policy significance compared with overseas supply.

  Risks

  Delays in policy targets, postponed capacity construction, rising costs, or weaker-than-expected demand.

Key data

• Report date2026-06-02The report cover shows Equity Research 2 June 2026.
• AnalystsKota Yuzawa; Ken KawamotoBoth are from Goldman Sachs Japan Co., Ltd.
• Japan energy storage battery sales targetAbout 3x growth, to be achieved within 10 yearsA Ministry of Economy, Trade and Industry meeting discussed expanding energy storage battery-related sales by about 3x within 10 years.
• Sales of Japanese energy storage battery manufacturers in 2025Close to ¥2tnThe Yomiuri Shimbun reported that the plan is to expand this scale to about 3x by 2035.
• Domestic EV battery capacity target150GWhThe report notes the 2030 target may be postponed to the mid-2030s.
• All-solid-state battery timelineCommercialization around 2030, with a domestic manufacturing base and supply chain to be established by the mid-2030sFrom industry policy coverage cited in the report.
• Industrial battery sales forecastFY3/26 ¥124.1bn; FY3/29 ¥200bnIndustrial batteries are expected to account for 28% of consolidated sales in FY3/29.
• Industrial battery operating profit forecastFY3/26 ¥18.4bn; FY3/29 ¥27.8bnIndustrial batteries are expected to contribute 36% of operating profit in FY3/29.
• New ESS plant2GWh; about ¥70bn investment; production start in 2H 2028The report says this plant could become an earnings inflection point.
• Government subsidyAbout ¥20bnThe report states that the project has been approved for government subsidies.
• Target price¥7,20012-month target price, based on the SOTP method.

Impact & implications

If the Japanese government continues to support domestic batteries from an economic security perspective, and renewable energy and data centers drive upside in grid-scale ESS demand, GS Yuasa's industrial battery business could move from an upfront investment phase into an earnings realization phase. For investors, in the short term it will be necessary to monitor whether lead-acid battery price hikes can continue to support profits, while over the medium to long term greater attention should be paid to the 2GWh plant ramp-up schedule, ESS order demand, and the continuity of government subsidies.

Risks

• The Honda Battery Electric Vehicle project may create a cost burden.
• The startup or mass production schedule of the new battery plant may be delayed.
• Elevated crude oil prices may affect costs and profit margins.
• Capital expenditures for the industrial battery and ESS businesses are heavy in the near term, and earnings contribution may come later than expected.
• There is risk of delays to Japan's EV battery capacity targets and the timeline for building an all-solid-state battery supply chain.

What to watch

• Follow-up policies, subsidies, and support intensity for domestic batteries under Japan's Ministry of Economy, Trade and Industry energy storage battery strategy.
• Whether GS Yuasa's 2GWh ESS battery plant begins operations as planned in 2H 2028.
• Whether industrial battery sales and operating profit grow along the target path for FY3/29.
• Whether price increases in the automotive lead-acid battery business continue to be implemented and improve margins.
• The pace of growth in renewable energy grid connection, AI data centers, and grid-scale ESS demand.
• Changes in Honda BEV project costs, crude oil prices, and raw material costs.