How significant is the impact of South Korea investing 800 trillion won in storage?
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The South Korean government announced the construction of a new memory chip cluster in the southwestern region, combined with Samsung Electronics’ disclosure of a 245 trillion won domestic long-term investment plan. South Korea's semiconductor industry is ushering in its largest expansion blueprint in decades.
From June 29 to 30, according to Chase Wind Trading Desk, BofA Securities analyst Simon Woo's team and Goldman Sachs' Giuni Lee's team both released research reports on South Korea's large-scale memory investment plan.
The core judgments of both institutions are highly consistent. The South Korean government and Samsung Electronics' huge investment commitments demonstrate strong official support for long-term memory supply expansion.
However, due to the infrastructure construction cycle and the pace of wafer plant production, the substantive impact on global memory supply will not be seen for at least 8 to 10 years, and investors should not have overly high expectations for a near-term supply shock.
Southwestern New Cluster: Strategic Layout of 800 Trillion Won Scale
The South Korean government announced it will build a brand-new memory wafer plant cluster in the southwestern region of the country, with chip manufacturers expected to invest about 800 trillion won in total capital expenditure.
The government will provide support for land, electricity, and water infrastructure. BofA Securities estimates it will take at least 5 years just for the infrastructure construction phase.
On this basis, construction of the new wafer plant shell, initial capacity ramp-up, and trial production will require an additional 3 to 4 years. Overall, meaningful mass production output from the new cluster is expected to come no sooner than 8 to 10 years from now.
Notably, the existing memory wafer plants in Korea are mainly concentrated around the Seoul metropolitan area, including Pyeongtaek, Yongin, Hwaseong, and Icheon. This government-planned southwestern cluster is far from Seoul, requiring much more infrastructure investment and significantly greater construction difficulty.
BofA Securities likened it to TSMC's decentralized strategy in Tainan, China, pointing out that such capacity expansion far from core regions requires a much longer lead time.
Doubling Capacity Target, Real Growth Rate Much Milder
Korean memory chip makers have reaffirmed plans to nearly double DRAM wafer capacity by 2030. On the surface, the expansion appears considerable, but this only corresponds to about a 15% compound annual growth rate (CAGR).
However, BofA Securities further points out that when taking factory closures and longer manufacturing cycles of new-generation memory chips into account, the actual expansion rate of operational wafer capacity will be below 10% per year, with the overall net wafer growth rate to 2030 only in the single-digit percentage compound growth range.
Even with the accelerated construction of new wafer plants in Yongin and Pyeongtaek, analysts believe it is unlikely that memory output will see significant near-term increases.
For memory stock investors, this means that changing the near-term supply-demand balance depends more on demand-side variables.
Samsung’s 2040 Plan: Capital Logic Behind the 245 Trillion Won
Goldman Sachs analyzed Samsung Electronics' major announcement released on June 29, 2026.
Samsung announced that it will invest a total of 245 trillion won domestically over the next 15 years (2026–2040), with about 210 trillion won devoted to semiconductors, accounting for 76% of the total investment. Specifically:
165 trillion won will be used for existing wafer plants and ongoing projects, including completing Yongin's sixth plant ahead of schedule, moving the completion date from 2047 to 2040;40 trillion won for two new wafer plants in Gwangju, which are important components of the southwestern semiconductor cluster project;5.6 trillion won for constructing a new HBM wafer plant near existing packaging facilities in Chungcheong province;For non-memory business, Samsung Display will get 6.7 trillion won to build new production facilities in Chungcheong province, focusing on next-generation smartphone panels and high-resolution micro-display products;In Gumi City, Samsung will also establish smartphone factories and humanoid robot production lines.
Goldman Sachs believes the implied capital expenditure growth pace in this announcement is within a reasonable range. The deduction logic is as follows:
If we assume that Samsung's domestic capital and R&D expenditures combined are about 80% of the consolidated total (same as the company's 2022 announcement), and assume annual growth of about 6% from 2029 to 2040, then cumulative domestic spending from 2026 to 2040 would be about 250 trillion won, slightly higher than the official 245 trillion won figure.
This means that based on Goldman’s forecast for Samsung's domestic and overseas combined capital expenditure plus R&D for 2026–2028 (125 trillion, 140 trillion, and 151 trillion won respectively), the implied spending growth for 2029–2040 is about 5% to 6%, which Goldman considers not aggressive.
On the other hand, Goldman Sachs notes that this announcement covers only domestic investment. If overseas capital expenditures are added in the future, there may be considerable room to raise the current forecast.
In the past five years, Samsung concentrated about 90% of its capital expenditure in semiconductors, while this announcement implies a concentration of 76%, indicating more dispersed resource allocation than in recent years.
Clear Long-Term Signals, Near-Term Pace Needs Calm Perspective
Summarizing the two institutional analyses, the core insights for investors can be outlined as follows:
First, supply shock is a mid-to-long-term event. The 8 to 10 year construction and production cycle means these investments will not change the memory market supply-demand landscape soon. There is no need to worry in the short term about large-scale new supply depressing memory prices.
Second, policy signals are more valuable than short-term financial significance. The accelerated construction of new plants in Yongin and Pyeongtaek, and the confirmation of the southwestern new cluster, signal Korea's strong support for long-term expansion of its domestic memory industry and help reinforce market confidence in the long-term competitiveness of Korean storage companies.
Third, Samsung’s valuation remains attractive. Goldman Sachs maintains a buy rating for Samsung Electronics, targeting 480,000 won for common shares and 360,000 won for preferred shares for the next 12 months. The potential increase from the current price (323,000 won) is about 48.6%.
Goldman's investment logic is based on continued strong memory pricing, substantive progress in HBM business, and more aggressive shareholder return expectations.
Fourth, uncertainties exist in details. Samsung has not disclosed whether the 245 trillion won investment includes R&D spending, nor has it released detailed capacity plans for the new Gwangju wafer plants. The 15-year plan is highly likely to be adjusted as market conditions change, so investors should track subsequent capital expenditure guidance dynamically.
Overall, the strategic significance of this South Korea memory investment plan far outweighs its short-term performance catalyst function. This is a marathon aimed at the 2030s.
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