Can Busan Power Its AI Future Without Clean Energy?

Few cities embody the contradictions of South Korea’s energy future as clearly as Busan. Busan produces nearly twice the electricity it consumes. With a self-sufficiency rate hovering around 170%, the southern port city stands out in a nation anxious about energy security. Most of that output, however, comes from two sources — the Kori nuclear complex and LNG-fired plants — both controlled by state utilities and tethered to a national grid designed decades ago for centralized growth.

For a city that supplies power to the rest of the country, Busan remains strikingly powerless. Less than 3% of its generation comes from renewables, and almost none of it is locally governed. While its turbines feed Seoul’s demand, its own industrial base struggles to attract investment under global decarbonization rules such as RE100and the EU’s carbon border tax.

The irony cuts deeper than statistics. Busan is not short of electricity — it is short of autonomy. Its infrastructure reflects South Korea’s broader pattern: energy concentrated in the capital, responsibility dispersed along the coast. As the Lee Jae-myung administration pushes a national “Energy Superhighway” to transmit offshore wind power from the West Sea to the Seoul region, the country’s second city is once again written into the margins of the transition it helped build.

What emerges is a portrait of imbalance — a green economy without regional sovereignty, a transition without symmetry. Busan’s surplus no longer signals strength; it marks the limits of a centralized model facing the carbon-neutral age.

The Lee Administration’s Green Vision and Contradictions

The Lee Jae-myung administration entered office promising a “balanced transition” — a twin agenda of carbon neutrality and regional equity. The government pledged to decentralize energy governance, expand renewable investment outside the capital, and link the green economy with industrial transformation in cities like Busan, Ulsan, and Gwangju.

On paper, the strategy looks inclusive. The Green Transition Roadmap 2050, released in early 2024, outlines a national energy mix of 40% renewables by 2036 and the creation of regional energy clusters supported by smart grids and hydrogen corridors. Busan–Ulsan–Gyeongnam (the BUG zone) was designated a “digital-industrial convergence belt,” intended to couple AI industries with clean power infrastructure.

In practice, however, the geography of the transition remains familiar.
The administration’s flagship Energy Superhighway Project — a high-voltage direct current (HVDC) network — channels renewable power from Sinan and the Jeolla coast toward the Seoul Capital Area, bypassing the industrial southeast. The grid’s design continues to reinforce a northward flow of electricity and capital, replicating decades of centralized planning under a different political vocabulary.

Officials defend the plan as a matter of efficiency, citing population density and demand concentration. Yet efficiency is a poor proxy for resilience — or for justice. The resulting system strengthens the capital’s security while keeping producing regions structurally dependent on national utilities. Busan, despite generating more power than it consumes, has little influence over pricing, grid operation, or reinvestment.

For an administration that speaks the language of decentralization, the Lee government faces a contradiction it cannot yet resolve: a green transition governed by the same hierarchies it claims to replace.

The Energy Superhighway — Infrastructure Without Balance

The centerpiece of South Korea’s green transition is the Energy Superhighway, a massive HVDC grid intended to carry offshore wind and solar power from the western coast to the capital. Technically elegant, politically revealing — it embodies both the ambition and asymmetry of the country’s energy policy.

The project, led by KEPCO in partnership with Hitachi Energy of Sweden, is designed to transmit up to 12 gigawatts of renewable electricity generated in Sinan, Buan, and Taean to the Seoul metropolitan region. It uses advanced high-voltage direct current systems to minimize loss across long distances — a model of efficiency celebrated in policy briefings and trade missions.

Yet what the cables connect is only half the story. What they bypass matters more.

The southeastern corridor — home to Busan, Ulsan, and the nation’s industrial spine — is absent from the HVDC network. No comparable investment links its manufacturing hubs or port districts to renewable supply. The infrastructure maps a familiar geography of power: energy flowing north, authority remaining centralized.

Officials describe the design as demand-driven. But in practice, it hardwires inequality into the grid itself. Regions that produce — through nuclear or LNG — continue to export power without control or reinvestment, while consumption remains concentrated in the capital. Busan, despite its surplus, operates as an energy periphery within its own nation.

The symbolism is difficult to ignore. The Energy Superhighway does not just transmit electricity; it transmits hierarchy — a system that moves power in every sense toward the center.

Busan’s Energy Architecture — Abundance Without Autonomy

Busan’s skyline may glitter with cranes, terminals, and new data campuses, but beneath that surface lies an older industrial machine — one built to generate power for others. As of 2025, the city’s electricity mix is dominated by nuclear and LNG, accounting for more than 95% of total generation. The rest — barely 2.6% — comes from small-scale solar, fuel cells, and biomass scattered across rooftops and industrial estates.

The Kori and Shin-Kori nuclear complexes, operated by Korea Hydro & Nuclear Power (KHNP), provide the bulk of the city’s output. Together, they feed over 7 gigawatts into the national grid, supplying not only Busan but large parts of the central and capital regions. To the west, KOSPO’s LNG combined-cycle plants add flexibility and peak-load supply — but at a cost. Every cubic meter of gas is imported; every kilowatt generated raises exposure to global fuel volatility.

Despite this productivity, Busan has no formal control over its grid, pricing, or reinvestment. All major facilities are nationally owned, all revenues flow upward through state utilities, and all policy decisions are made elsewhere. The city hosts infrastructure but lacks agency — a tenant in its own energy house.

That absence of autonomy carries economic weight. Local industries — shipbuilding, automotive parts, logistics — remain ineligible for RE100 certification, the global benchmark for renewable sourcing. Without credible renewable supply, companies face mounting barriers under carbon-adjusted trade regimes such as the EU’s CBAM. Meanwhile, environmental costs — nuclear waste storage, LNG emissions, heat-island effects — are local and unpriced.

In numerical terms, Busan generates more electricity than it consumes.
In structural terms, it remains a captive grid zone. The city’s power plants illuminate the nation, but its future — industrial, digital, and ecological — remains dimmed by decisions made far from its shores.

Digital Transition Without a Green Backbone

Busan wants to reinvent itself as a city of data, not docks. Its government has branded the port as a rising node for AI, smart logistics, and cloud infrastructure, courting domestic and global firms seeking cheaper land and fiber connectivity outside the capital. The vision is sound — but the foundation is brittle.

Digital industry today runs on electrons as much as on algorithms. AI data centers and high-performance computing clusters demand vast, stable, and certifiable clean power. For companies operating under RE100, ESG, or carbon border adjustment standards, the source of energy is not just an input — it is a credential.

Here, Busan hits a structural wall. The city’s grid remains dominated by nuclear and LNG, with renewables under 3%. Unlike Seoul or the Gyeonggi region — where state-led renewable projects and smart grid pilots are clustered — Busan’s power supply lacks traceable green capacity. Global firms evaluating site options can’t meet RE100 sourcing thresholds through local contracts; the result is hesitation, not investment.

A few pilot projects exist — small hydrogen demonstration plants near Eulsukdo, and fuel-cell clusters in Gangseo District — but their scale is symbolic, not systemic. Without a locally governed energy framework, Busan’s digital ambitions rely on the same fossil-heavy grid that underpins its port cranes.
In a carbon-priced economy, that’s not progress — it’s path dependence.

The paradox is clear: Busan seeks to move its economy up the value chain, yet its energy mix keeps it bound to the industrial past. Unless the city secures renewable sovereignty — through distributed microgrids, local RE100 pooling, or regional power-sharing reform — its digital transition will remain an architectural sketch without a power source.

The Structural Gap — Supply Without Sovereignty

South Korea’s electricity system is often described as “integrated.” In practice, it is monocentric — a single grid operated, priced, and governed from the capital.
Every kilowatt generated in Busan, Ulsan, or Sinan flows through KEPCO’s national dispatch, and every decision — from pricing to reinvestment — returns to Seoul.

This model made sense in the developmental decades of the 1980s and 1990s, when efficiency and scale were paramount. But in the era of carbon accounting and regional innovation, that logic has become an anchor. Provinces that generate the majority of national electricity, such as the southeastern and southwestern corridors, remain policy takers, not decision-makers.

The imbalance is not just administrative — it is infrastructural. Transmission networks run northward, feeding urban consumption zones while bypassing regional reinvestment. Electricity prices are uniform nationwide, erasing local cost advantages and masking systemic inequities. No locational marginal pricing, no regional grid authority, no capacity for revenue retention.
The outcome: Busan produces the electrons; Seoul captures the value.

This is the unspoken architecture of the Korean grid — a system built for national cohesion that now inhibits regional autonomy. As energy transitions become increasingly local — rooftop solar, microgrids, hydrogen clusters — the mismatch grows sharper. Busan’s challenge, like that of many industrial cities, is no longer generation but governance: the right to decide how its own energy economy evolves.

The Lee administration’s Balanced Transition Council (BTC), launched in 2025, acknowledges the problem but lacks enforcement power. Its role is advisory, its jurisdiction undefined. Meanwhile, KEPCO — financially constrained and politically cautious — continues to operate as both monopoly and bottleneck, slowing reform under the banner of grid stability.

The result is a paradox that mirrors Busan’s own: a national system strong enough to supply the entire country, yet too centralized to adapt to the regions that sustain it.

From Efficiency to Equity

For much of its modern history, South Korea’s energy governance has been defined by a single organizing principle — efficiency. The idea was straightforward: one grid, one price, one authority. Electricity was to be produced where it was cheapest and delivered where it was needed most. The model worked for an industrial economy climbing toward modernization, but it has grown brittle under the demands of a carbon-neutral era.

As renewable infrastructure spreads unevenly across the peninsula, efficiency no longer translates into either resilience or fairness. Regions like Busan, Jeolla, and Ulsan generate the power but lack the means to determine its use or reap its benefits. The capital, which consumes the lion’s share, continues to set the terms of policy and investment. The contradiction has become too visible to ignore — a nation speaking of decentralization while operating a grid that enforces the opposite.

Within policy circles, the language itself is beginning to shift. Where officials once spoke of “load management” and “cost optimization,” they now use words like sovereignty, autonomy, and just transition. Inside the Balanced Transition Council (BTC), created under the Lee Jae-myung administration, younger bureaucrats and researchers frame energy reform as a question of governance, not technology. They argue that achieving carbon neutrality will require redistributing control, not merely upgrading hardware.

Still, institutional momentum resists reform. KEPCO’s monopoly remains legally intact, its financial deficit limiting flexibility; ministries overlap in jurisdiction; and regional governments are left with symbolic consultative roles. Reform is discussed in principle but deferred in practice, locked in what one energy economist called a “centralized transition paradox” — a decarbonization drive that reproduces the hierarchies it claims to dismantle.

In that sense, the debate unfolding in Seoul is less about engineering than about equity. It questions who benefits from the green transition, and who bears its costs. The outcome will determine whether Korea’s transformation remains a project of efficiency or evolves into a system of shared resilience — one where cities like Busan are not simply sites of generation, but partners in the governance of power itself.

Powering Busan’s Next Economy

Busan’s future will be decided not in its ports or office towers, but in how it sources its electricity. The city’s economic transformation — from logistics and shipbuilding to data, AI, and clean technology — depends on securing a reliable, renewable energy base. Without it, every digital ambition remains an extension of a carbon past.

In global competition, the equation is simple: data runs on power, and investment follows renewables. Cloud providers, AI startups, and advanced manufacturers now choose locations based on energy credibility as much as cost or connectivity. Busan, despite its infrastructure and human capital, still operates on a grid dominated by nuclear and imported LNG — a legacy architecture ill-suited for a climate-constrained world.

Yet this constraint is also an opportunity. If Busan can align its renewable development — offshore wind in the East Sea, solar retrofits across industrial rooftops, small-scale hydrogen and storage pilots — with its AI and data strategies, it can model a new kind of industrial city: low-carbon, high-computation, regionally autonomous. That will require not only investment, but regulatory permission to govern its own power, a policy shift the national government has so far been reluctant to grant.

The green transition, then, is not a distant national target but an immediate urban challenge. Busan’s path forward lies in closing the gap between ambition and infrastructure — between the industries it wants and the energy it can claim.
In that sense, the city’s next transformation will not be measured in megawatts or algorithms, but in the ability to make its own energy decisions — and to turn sustainability from an aspiration into an asset.