South Korea Launches US$745B K-GX Strategy to Decarbonise by 2035

South Korea has put a price on its climate ambitions. On Wednesday, President Lee Jae-myung launched the South Korea K-GX Strategy, a 10-year plan backed by KRW 1,000 trillion (about US$744-747 billion, depending on the outlet) that aims to cut emissions and grow the economy at the same time.

The pitch matters as much as the price. Seoul is presenting decarbonisation as an industrial competitiveness agenda, with Lee saying Korea should become a “designer” of green markets rather than a follower.

That framing is why mining, energy and clean-tech investors are watching. Many of the plan’s targets depend on imported metals, foreign equipment and global capital.

The useful work is separating the firm numbers from the soft ones. Doing that shows you where capital might actually flow, and where the plan has not yet proven itself.

Where does the KRW 1,000 trillion actually come from?

Reuters described the plan as a “$747 billion energy transition plan through 2035.” Renewables Now put it at US$744 billion and called it “government investment.” The breakdown from Reuters and Economic Times Energy shows a blend of funding sources, and that blend changes how you should read the headline.

The components do not cleanly sum to KRW 1,000 trillion, and several Korean outlets omit the private figure, which suggests it may sit inside the climate finance bucket.

The policy-bank tier draws on five institutions, including Korea Development Bank and Industrial Bank of Korea. Seoul also plans to expand the Climate Response Fund, begin issuing green bonds from 2028, and offer tax incentives for domestic green-tech production.

Korea JoongAng Daily reported that the climate ministry framed the quadrillion-won commitment as including a further 220 trillion won from the private sector, which supports reading the headline figure as a blend of public and private capital.

Only about a fifth of the headline figure is direct budget money.

For your portfolio, that means the plan’s real force depends on concessional lending (loans on cheaper-than-market terms) and on private appetite, not on government spending. Tax credits and policy-bank loans are the channels most likely to reach listed companies.

What will Korea build by 2030 and 2035?

The money is meant to fund a physical build-out, and the headline targets are clear:

• 100 GW of renewable capacity by 2030, mainly solar and wind
• More than 70% of new vehicle sales electric or hydrogen by 2035
• A 24.3-31.0% emissions cut by 2035 against 2018 levels across steel, petrochemicals, refining, cement and semiconductors/displays
• Bio-based and recycled petrochemical feedstock rising from 0.5% in 2025 to 10% by 2035 (ICIS)
• Completion of the domestic innovative small modular reactor (i-SMR) around 2035

Ten green industries anchor the plan: EVs, batteries, solar, wind, small modular reactors (SMRs, which are compact nuclear reactors built in factory modules), power equipment, power semiconductors, heat pumps, hydrogen, and carbon capture, utilisation and storage (CCUS). A climate ministry official projects the global SMR market will grow from under US$5 billion in 2024 to US$25 billion by 2030.

The harder detail is missing. Reporting gives no figure for Korea’s current installed renewable capacity or its current EV share of sales. Until the ministry publishes those starting points, you should treat 100 GW as a direction of travel rather than a measurable climb.

The hydrogen steel test case

Steel produces roughly 14% of national emissions, according to Pulse, and it sits at the centre of the plan.

Flagship target A hydrogen-based ironmaking demonstration plant with 300,000 tonnes/year capacity by 2030.

The process, called direct reduction, uses hydrogen instead of coal to strip oxygen from iron ore. Seoul frames it as a world-first commercial ambition, with POSCO Holdings expected to lead and commercial-scale output phased to around 2036. Plant sites, ownership and funding were not reported, and no project-level announcements from POSCO or Hyundai Steel were found. CCUS is thinner still, with no capacity or projects named.

Which supply chains and investors stand to gain?

Start with the batteries. EVs, batteries, power semiconductors and hydrogen all draw on lithium, nickel, cobalt, manganese, rare earths and specialty metals. The plan’s vehicle and battery targets imply sustained demand for those inputs, though Seoul has not detailed how it will source them.

Seoul’s separate critical minerals strategy is the more relevant document for sourcing, since the K-GX plan leaves open how battery and hydrogen inputs will be secured from overseas suppliers.

Next comes the grid. A 100 GW renewables target points to work for utilities, independent power producers (IPPs), grid equipment makers and developers, if permitting and transmission hold up. The SMR programme adds nuclear vendors, engineering firms and fuel-cycle suppliers.

Then hydrogen and steel. A 300,000 tonne demonstration needs electrolysers, storage, pipelines and port infrastructure, plus licensors of direct-reduction and electric-arc furnace technology. The commercial driver is export pressure from European CBAM-type rules (border carbon charges on imports) and customer demands from carmakers and appliance makers.

The design mirrors Japan’s GX public-private framework, although no systematic funding comparison exists. Korea appears to be positioning itself as a regional hub for green steel, batteries, SMRs and petrochemical decarbonisation technology.

If you hold mining or clean-tech exposure, the practical read is that Korean demand is policy-backed but offtake terms (binding supply contracts) are unwritten. That makes this a watch-list opportunity, not a contracted one.

What could slow the plan down?

Reuters framed the strategy as a way for Korea to cut its reliance on imported fuels.

Reuters described the plan as helping Korea “break its fossil fuel habit.”

Breaking that habit carries costs. The key risks are:

• Grid and permitting strain: 100 GW by 2030 implies a sharp acceleration from a historically slow rollout, and no bottleneck analysis has been published.
• Hydrogen steel scale-up: moving from demonstration to commercial output depends on hydrogen supply costs and on competing with blast furnaces.
• SMR delivery: reactor capacities, sites and firm commitments remain unannounced.
• Fiscal credibility: reliance on policy-bank guarantees rather than budget cash leaves open how much is truly committed.
• Coal and LNG phase-down: retiring fossil capacity raises stranded-asset risk (assets written off before the end of their useful life).

Independent scrutiny is also absent. No assessments from the IEA, BloombergNEF or Climate Action Tracker were found, nor any NGO critiques. Reporting also omits Korea’s 2030 emissions pledge detail, an official economy-wide 2035 target, and the status of the Framework Act on Carbon Neutrality.

Korea’s coal phaseout adds a further layer of risk, because retiring fossil plants ahead of replacement capacity can strand assets and strain grids already struggling to absorb new renewables.

The next 12 months of implementing legislation, grid plans and project awards will show you whether the headline becomes investable.

What the K-GX plan settles, and what investors still need to see

The plan settles direction, not delivery. Most of the KRW 1,000 trillion is financing capacity rather than budget cash. The targets are concrete in steel, renewables and SMRs, thin in CCUS, and missing baselines throughout.

Three signals will separate policy from pipeline:

1. Implementing legislation and dedicated budget lines
2. Named project awards, particularly the hydrogen ironmaking plant and SMR sites
3. Sourcing or offtake announcements for battery and hydrogen inputs

Until those arrive, sizing your conviction to the evidence, not the headline, is the more defensible position.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. Targets and market projections cited are forward-looking, speculative and subject to change based on policy and market developments.