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Analysis Area:  Ulsan Metropolitan City

Core Areas:  Nam-gu, Buk-gu, Ulju-gun

Agenda: Completion of Demonstration and Level of Commercial Revenue Conversion in the Hydrogen and Energy Industry

Golden Time Type: Infrastructure-to-Revenue Conversion Risk

Reference Date: 2026.08.28

Version: Regional AX Golden Time Intelligence v3.2
 

As of March 2026, Ulsan is estimated to possess approximately 48% of the nation's hydrogen production, 198 km of hydrogen pipelines, 16 charging stations, and 3,619 hydrogen electric vehicles. Although the infrastructure for production, transportation, charging, and utilization is concentrated at the highest level in the country, hydrogen industry revenue, private investment return rates, and operating profits of specialized hydrogen companies are not disclosed at the regional level. Even in the period from 2026 to 2028, if the facilities are not converted into revenue, exports, or recurring contracts, only infrastructure maintenance costs will accumulate.  While Ulsan is a leading region for hydrogen infrastructure, it is not classified as a leading region for hydrogen revenue.

In 2024, the clean hydrogen power generation market opened with a capacity of 6,500 GWh, but the volume of applications was 6,171.68 GWh, while the final awarded volume amounted to only 750.48 GWh. Although the hydrogen industry has shifted from subsidy-based demonstration projects to a long-term contract market selected based on price and implementation capability, the awarded volumes for Ulsan companies and power plants are not confirmed in the publicly disclosed results. If bidding prices and clean hydrogen procurement capabilities remain fixed for the next two to three years, market entry for companies possessing only demonstration experience will be delayed.  The evaluation criteria for the hydrogen industry have shifted from facility construction to contract volumes secured through competitive bidding.

The Ulsan Hydrogen City project completed its first pilot phase in 2024 and is investing 29.5 billion won in follow-up projects from 2025 to 2028 to promote the installation of 11.9 km of pipelines, direct supply to hydrogen refueling stations, and the demonstration of hydrogen electric tractors. Although the project has expanded from single-site residential and fuel cell demonstrations to connections involving industrial complexes, refueling, and logistics, commercial viability based on sales volume, transportation cost reductions, and facility utilization rates has not yet been confirmed. If a revenue model is not established by the time of trial operations in 2028, a gap will occur between the conclusion of the demonstration phase and the start of private sector operations.  While Ulsan Hydrogen City is expanding, it is not yet at the stage of completing commercial operation.

The Ulsan Capro hydrogen shipping facility has secured a shipping capacity of 1.78 tons per hour and a maximum of 43 tons per day, which was presented as enough to charge approximately 8,500 Nexo vehicles. Although the structure has expanded to sell byproduct hydrogen from industrial complexes from internal factory raw materials to external mobility and demand centers, the actual average daily shipment volume, contract unit price, and facility utilization rate have not been disclosed. If demand growth fails to keep pace with production capacity for two to three years, this large-scale shipping capacity will remain an idle asset rather than a revenue-generating one.  Supply capacity has been verified, but market absorption capacity remains unconfirmed.

Ulsan's large-scale hydrogen production is based on byproduct hydrogen generated from oil refining and petrochemical processes. The structure is such that hydrogen is supplied as a process byproduct of existing fossil fuel industries rather than as an independent energy source, and the proportion of production volume that has secured clean hydrogen certification is not disclosed. If clean hydrogen certification and product carbon standards are strengthened between 2026 and 2028, the city will be unable to enter the premium market even with high total production volume.  While Ulsan's production volume advantage is definitively established, its cleanliness advantage has not yet been determined.

If oil refining and petrochemical production decreases, the amount of byproduct hydrogen generated is also affected by raw material input and facility operating rates. Although the hydrogen supply base is linked to existing industries facing a crisis, the speed of replacement with low-carbon hydrogen sources has not been confirmed. If petrochemical production cuts coincide with increased hydrogen demand over the next two to three years, Ulsan will enter a reversed structure where it is a production city yet relies on external clean hydrogen.  The supply advantage centered on byproduct hydrogen is a conditional advantage that could be weakened alongside the restructuring of the petrochemical industry.

Ulsan's 198km hydrogen pipeline serves as a physical infrastructure capable of large-scale and continuous supply, surpassing tube trailers. While competition in hydrogen distribution has shifted from individual transport to pipeline-connected networks, operating rates per pipeline, transportation costs, and revenue from private usage fees are not publicly disclosed. If the connection of new demand sources is delayed for two to three years, maintenance and safety management costs increase before network benefits.  Although pipeline length is a competitive asset, it is not classified as a revenue asset unless its utilization rate is verified.

The new 11.9 km pipeline project, scheduled for completion by 2028, includes connections to Hyomun, a charging station, the Automotive Industrial Complex, and Hyundai Heavy Industries. While the purpose of the pipeline network has expanded from residential demonstration to demand from the automotive, shipbuilding, and logistics sectors, minimum purchase quantities and long-term supply contracts for each demand source have not been disclosed. If contract demand is not secured by the time of trial operations in 2028, the physical and economic connections will be separated.  Although the expansion of Ulsan's infrastructure has improved accessibility for demand industries, long-term profitability has not been secured.

Ulsan completed the construction of its Hydrogen Pilot City in 2024 and was subsequently selected for the follow-up Hydrogen City project in the same year. While the repetition of demonstrations accumulates experience in technology, safety, and operation, the project structure relies again on an investment of 29.5 billion won in national and municipal funds. There are no confirmed cases of private operators expanding without public investment or records of return on investment. If the follow-up project also concludes as a government-funded initiative after two to three years, the continuity of the demonstration does not translate into market continuity. Although  Ulsan's Hydrogen City has succeeded in expanding its demonstrations, it is not classified as a financially independent industry.

The demonstration of three hydrogen electric tractors is an early example of expanding demand from passenger cars to industrial logistics. While the applications of hydrogen have shifted from passenger mobility to ports, factories, and long-distance transport, data regarding total cost of ownership, charging time, operating rates, and maintenance costs compared to diesel are still in the accumulation phase. Unless the economic gap narrows by 2028, vehicle demonstrations will not lead to large-scale purchases.  Industrial hydrogen mobility is currently in the operational demonstration phase, and the commercial vehicle market remains unformed.

In 2024, the opening volume for the clean hydrogen power generation market was 6,500 GWh, but the awarded volume was 750.48 GWh, representing approximately 11.5% of the opening volume. Despite the opening of the policy purchasing market, the volume passing price and non-price evaluations as well as business conditions was limited, shifting the bottleneck for hydrogen power generation from a lack of a market to economic feasibility and procurement stability. There is no confirmed track record of Ulsan's production capacity leading to successful bids in the power generation market. If competitive fuel procurement contracts are not secured within two to three years, long-term power generation contracts will revert to other supply chains.  Although clean hydrogen power generation has reached the market opening stage, it is not considered a market that has secured price competitiveness.

Clean hydrogen power generation contracts are structured with a 3-year preparation period and a 15-year transaction period, under which the operator bears a significant portion of fluctuations in fuel costs, exchange rates, and ocean freight rates. Although the revenue structure has shifted from short-term subsidies to long-term price and procurement risk management, the contractual structure in which Ulsan's hydrogen producers and power companies jointly manage these risks has not been disclosed. If excluded from the competition for long-term contracts between 2026 and 2028, the revenue base for the subsequent 15 years will also be lost simultaneously.  The "golden time" for hydrogen power generation is formed at the point of securing long-term contracts, rather than at the time of power plant construction.

As of March 2026, Ulsan possessed 3,619 hydrogen electric vehicles and 16 charging stations. While initial deployment focused on government and passenger cars, it is expanding to commercial vehicles and industrial logistics; however, hydrogen sales per vehicle, the break-even usage for charging stations, and the growth rate of private vehicles are not publicly disclosed. If passenger car adoption stagnates for two to three years and the transition to commercial vehicles is delayed, the profitability of the charging network will remain fixed at a low level.  Although the number of vehicles and the charging network rank among the top in the country, an independent charging market has not yet been established.

Charging stations supplied via pipelines are structured to reduce tube trailer transportation costs and land burdens. While the efficiency of the supply method has improved, the gap in vehicle price, fuel costs, and vehicle variety compared to electric vehicles cannot be resolved solely through pipelines. Unless the supply of finished vehicles and purchases by transportation operators expand over the next two to three years, improvements in supply efficiency will not be able to offset the lack of demand.  The bottleneck for hydrogen mobility in Ulsan has shifted from a lack of charging infrastructure to vehicle demand and transportation economics.

The Ulsan Mipo National Industrial Complex was designated as a distributed energy specialized zone in 2025, and a structure was proposed to supply power to petrochemical companies and AI data centers through 300MW of combined heat and power (CHP) generation and direct electricity trading. Although the energy business has shifted from owning production facilities to direct electricity trading with demand companies, the proportion of existing CHP generation in the initial supply is higher than that of hydrogen. Unless the actual supply volume of carbon-free electricity based on green hydrogen is confirmed over the next two to three years, hydrogen will remain a long-term plan.  The Ulsan Distributed Energy Special Zone has entered the electricity revenue model, but its integration with the hydrogen revenue model remains incomplete.

A plan has been presented to utilize unused cold energy from LNG terminals for data center cooling and to transition to renewable energy and green hydrogen power. Although energy competition has shifted from the sale of a single fuel to packages combining electricity, heat, cold energy, and carbon, the scope of disclosure regarding the confirmed scale of data center attraction and direct transaction contracts remains limited. If actual demand sources are not connected by 2028, the combined energy model will remain merely a plan.  Ulsan's energy convergence structure is highly distinctive, yet the level of contract verification is low.

Ulsan accounts for approximately 48% of the nation's hydrogen production, possesses 198 km of pipelines, 16 charging stations, and experience in operating a hydrogen city. While the readiness level has been established across the entire infrastructure cycle of production, transportation, and utilization, the proportion of clean hydrogen, pipeline utilization rates, charging station profitability, and recurring revenue are not disclosed. Unless operational indicators translate into profitability indicators over the next two to three years, the advantage in readiness will not translate into an advantage in business viability.  The physical readiness level is rated as 'very high,' while the commercial readiness level is rated as 'partially verified.'

In 2026, Ulsan selected 11 prospective hydrogen specialized companies to form a corporate group covering the entire value chain of production, storage, transportation, and utilization. While the corporate base has expanded, the scale of total revenue, exports, private investment, and follow-up procurement for these local hydrogen specialists remains unconfirmed. If the supported companies fail to secure independent revenue by 2028, the corporate group will remain merely a group of participants in support programs rather than a business ecosystem.  Preparations for identifying companies have been made, but readiness for market survival remains unconfirmed.

Capro's daily 43-ton shipping facility and 198 km pipeline network demonstrate the existence of a commercial supply base. While supply capacity has exceeded the demonstration scale, actual sales volume, long-term contract rates, and the proportion of demand for transportation and industrial use are not disclosed. If facility utilization rates are not disclosed or verified for two to three years, the gap between production capacity and market size will persist.  Commercial supply facilities have expanded, but commercial demand has not been determined.

The hydrogen power generation bidding market and direct trading of distributed energy have institutionalized a paid purchasing market for hydrogen and energy. While a trading structure has been established, there is a lack of public evidence regarding the winning bid volumes and direct sales contracts secured by Ulsan companies. Unless long-term contract performance records are accumulated by 2028, regional profits will accrue to external operators even if the market system exists.  Market opening has been confirmed, but the attribution of profits to Ulsan remains unconfirmed.

Ulsan's hydrogen supply infrastructure originated from byproduct hydrogen from the oil refining and petrochemical industries, and subsequent plans included green hydrogen and carbon-free electricity. While the direction of supply sources has shifted toward decarbonization, the production volume of certified clean hydrogen and its proportion relative to the total supply are not disclosed. If the purchasing market is restructured based on carbon intensity in two to three years, a lead in total production volume will not necessarily translate into a lead in certified volume.  The spread of byproduct hydrogen is high, while the spread of certified clean hydrogen is low or unconfirmed.

The clean hydrogen power generation market incorporates carbon emission calculation methods and long-term implementation conditions into contracts. Although transaction standards have shifted from the color and name of hydrogen to lifecycle emissions and supply stability, the extent to which Ulsan's production and transportation data is linked to the certification system remains unconfirmed. If data verification for 2026–2028 is delayed, the facility will not be recognized in the clean hydrogen market even if it possesses production capabilities.  Ulsan's clean hydrogen gap lies in certifiable carbon data rather than production capacity.

The 2026 support targets for prospective hydrogen specialized enterprises consist of 11 companies, including production firms such as Deogyang Gas and Capro, as well as companies related to equipment, parts, and fuel cells. Although the group of companies has expanded from a production-centered large conglomerate to include small and medium-sized technology enterprises, results in inter-company purchasing contracts and joint sales have not been confirmed. Unless dependence on prime contractors and public demonstration projects decreases within two to three years, the increase in the number of companies will not lead to the expansion of the market ecosystem. While  the increase in the number of companies has been confirmed, the expansion of transaction networks remains unconfirmed.

Although companies covering the entire hydrogen lifecycle—from production and storage to transportation and utilization—exist in Ulsan, the local procurement rate for core components and systems is not disclosed. Even if the industrial ecosystem is physically concentrated, if high-value equipment and software are procured externally, only revenue from hydrogen production and facility operations remains in the region. If the local procurement rate does not rise by 2028, infrastructure expansion and local added value will be separated.  The placement of full-cycle companies has been established, but the attribution of full-cycle value has not been confirmed.

The follow-up hydrogen city project aims for pilot operations of pipelines and systems in the second half of 2028, and the clean hydrogen power generation market is already selecting long-term contractors. There is a time lag in which securing contracts in the national market proceeds ahead of the completion of regional infrastructure. If the market is entered after commercial operation in 2028, it will be subject to the already determined 15-year contract structure.  The time risk for Ulsan's hydrogen industry is the delay in securing market contracts rather than the delay in technology development.

While the deployment of hydrogen electric vehicles, charging stations, and pipelines has accumulated, private profits based on hydrogen prices and utilization rates are disclosed only to a limited extent. Although the deficit structure may be concealed while public investment continues, maintenance and replacement costs will remain with the operating entities after the project ends. If recurring revenue is not confirmed between 2026 and 2028, infrastructure deterioration will begin before revenue generation occurs.  The golden time for revenue verification is before 2028, when subsequent government-funded projects are completed.

Clean hydrogen power generation contracts are designed with a 15-year transaction structure following a preparation period. As the initial successful bidder secures fuel supply networks, financing, and power generation demand for an extended period, the market available for latecomers to enter shrinks. If Ulsan companies are excluded from long-term contracts over the next two to three years, they will lose stable demand sources despite possessing production infrastructure.  The irreversibility of the hydrogen market stems more from long-term purchase contracts than from technology patents.

Hydrogen pipelines provide a fixed connection between specific production sites and demand centers. If initial routes are established around byproduct hydrogen suppliers, network transitions will require additional capital and licensing even if clean hydrogen production sites and demand structures change in the future. If new pipelines diverge from future clean hydrogen flows by 2028, the advantage of existing infrastructure will shift to route dependence.  Pipeline networks are network assets, yet they are also irreversible assets that restrict the switching of supply sources.

Compression judgment: Ulsan's hydrogen infrastructure will be converted into industrial value only if certified volume, not hydrogen production volume; paid usage, not pipeline length; and long-term contract revenue, not the number of demonstrations, are confirmed before 2028.

Ulsan's hydrogen and energy industry is judged to be at the top in the country in terms of completed demonstrations and infrastructure accumulation ,  but partially verified in terms of clean hydrogen certification, long-term contracts, private recurring sales, and facility profitability .

Currently, profitable hydrogen in Ulsan is primarily derived from the production and distribution of byproduct hydrogen generated from existing industries. Clean hydrogen, power generation contracts, industrial logistics, and direct energy trading—which will determine the profitability of the future hydrogen industry—are currently in the market formation or initial contract stages.

Ulsan has taken the lead as a city that produces hydrogen, but it has not yet reached the level of a city that sells hydrogen's carbon value, data, and long-term contracts.

Golden Time Judgment: Hydrogen Infrastructure Leadership + Commercial Revenue Conversion Risk

Evidence Sources

• KOTRA Invest Korea, Ulsan Hydrogen City Development Project and Hydrogen Industry Infrastructure
• Ulsan City Corporation, Hydrogen City Phase 3 Development Project
• Ulsan Metropolitan City, Capro Hydrogen Shipping Facility
• Korea Power Exchange, Results of Competitive Bidding for 2024 Clean Hydrogen Power Generation Market
• Korea Power Exchange, Clean Hydrogen Power Generation Market Operation Plan
• Korea Power Exchange Announces Competitive Bidding for 2025 Clean Hydrogen Power Generation Market
• Ministry of Climate, Energy and Environment Designates Ulsan as Specialized Distributed Energy Region
• KOTRA Invest Korea, Ulsan Distributed Energy Specialized Region Project Structure

Structural Insight — Hydrogen supply and the revenue of the hydrogen industry are different markets.

Ulsan's hydrogen competitiveness originated from the byproduct hydrogen generated in large quantities during petrochemical processes and the pipelines that transport it. In this structure, since hydrogen is already being produced and distributed, it appears as though an industry has been established. However, the market for selling byproducts from existing processes differs from the market for selling clean hydrogen through long-term contracts in terms of price, certification, and demand.

While competitiveness in the byproduct hydrogen market stems from production volume and distance, competitiveness in the clean hydrogen market is formed by lifecycle carbon emissions, stable fuel supply, financing, and contract fulfillment data. The fact that existing production volume is high is not automatically carried over to the new market. On the contrary, there is a possibility that a production structure based on fossil fuels may work against the market in cleanliness assessments.

Ulsan's large-scale pipeline network shares the same structure. While it currently serves as an asset for efficiently transporting supply sources, existing routes will incur redesign costs if future clean hydrogen production sites and demand centers change. The formula that the city that builds infrastructure first secures the market first ceases to hold true the moment supply sources and contract structures shift.

Therefore, the structural gap in Ulsan's hydrogen industry is not between demonstration and commercialization.  The disconnect between the ability to produce large quantities of hydrogen in existing industries and the ability to profitably sell certified hydrogen in the future market determines Ulsan's true golden time.