HVDC Transmission Systems Market Size & Share Analysis - Growth Trends and Forecast (2026 - 2031)

Global HVDC Transmission Systems Market Trends and Insights

Increasing Integration of Renewable Energy Generation

Utilities are deploying HVDC corridors to relieve curtailment as variable renewables outpace local load absorption. China’s desert bases host 120 GW of wind and solar, yet local demand absorbs less than 30% of output; the ±800 kV Gansu–Zhejiang link now moves 8 GW across 2,383 km with only 3.2% losses, roughly half those on a 750 kV AC route. In offshore wind, VSC platforms export power beyond 40 km from shore, where AC export becomes uneconomic; the 3,600 MW Dogger Bank project validated this model in 2024. The United Kingdom, India, and Germany now mandate HVDC for renewable zones over 5 GW, accelerating new project sanctions. National regulators increasingly stipulate synthetic inertia delivery, favoring MMC converters that can modulate power within 50 milliseconds. These factors make renewable integration the single largest driver of the HVDC transmission systems market through 2031.^{[1]Central Electricity Authority of India, “Renewable Evacuation Guidelines,” ceaindia.gov.in}

Aging Grids & T&D Reinvestment Cycles

North American and European utilities are replacing 1960s-era AC lines with HVDC to double capacity on existing rights-of-way. The U.S. Department of Energy reserved USD 2.5 billion in 2025 for HVDC corridors that bypass congested 345 kV interties.^{[2]U.S. Department of Energy, “Transmission Facilitation Program Funding,” energy.gov} Germany’s SuedLink, re-scoped from overhead AC to underground ±525 kV HVDC, cut 15 years of local opposition and secured a 2028 go-live date. Brazil’s Furnas added modular multilevel converters to its Rio Madeira bipole, boosting transfer capacity by 1 GW without new conductors. Although converter stations cost USD 150 million to USD 300 million per GW, they defer even costlier parallel AC builds that face lengthy environmental reviews. Consequently, reinvestment cycles will prop up the HVDC transmission systems market for at least the next decade.

Need for Long-Distance, High-Capacity Interconnections

Economic dispatch favors HVDC once overhead lines exceed 600 km or submarine routes surpass 50 km. China’s Baihetan–Jiangsu ±800 kV link spans 2,087 km and moves 8 GW of hydropower, displacing coal generation that would emit 28 million tCO₂ annually. ASEAN’s 1,400 km Lao-Thailand-Malaysia-Singapore corridor plans to carry 3 GW by 2030. Australia’s 1,500 MW Marinus Link chose HVDC after AC studies showed the need for three parallel cables and reactive compensation platforms costing AUD 1.2 billion more. Bidirectional flow capability also underpins the 3 GW Saudi-Egypt link, which balances seasonal peaks across the Red Sea. These examples illustrate how long-haul corridors continue to expand the HVDC transmission systems market.

Electrification of Offshore Oil & Gas Assets

Regulators are placing carbon-pricing pressure on offshore installations powered by gas turbines that emit up to 20 million tCO₂ yearly in the North Sea alone. Norway now requires shore-power evaluations for all new fields, prompting 450 MW of HVDC orders covering Johan Sverdrup, Johan Castberg, and Snorre. Saudi Aramco followed in 2025 with two 300 MW VSC links to the Marjan and Berri complexes, freeing associated gas for petrochemical feedstock. Economics hinge on carbon prices above EUR 90 per tonne, where avoided emissions offset converter capital cost over a 15-year field life. Even in lower-priced carbon regimes such as Malaysia, operators have begun feasibility studies to hedge against future regulation. Such projects add a specialized but expanding niche to the HVDC transmission systems market.

High Upfront Capital & Permitting Hurdles

Converter stations cost 50%–70% more per MW than comparable AC substations, and permitting often exceeds four years. The 1,250 MW Champlain Hudson Power Express required 14 years of approvals, pushing costs from USD 2.2 billion to USD 3.9 billion. Germany’s SuedLink saw its budget triple to EUR 10 billion after 27 route changes mandated by regulators. Emerging-market developers face higher financing costs: Brazil’s Belo Monte line needed 70% debt underwriting from BNDES because commercial banks balked at currency risk.^{[3]BNDES, “Belo Monte Transmission Financing,” bndes.gov.br}

Distributed & Behind-the-Meter Generation Growth

Rooftop solar and residential batteries reduce peak-hour demand, weakening the utilization case for bulk transmission in mature economies. Behind-the-meter solar in California reached 18 GW in 2025, forcing curtailment of 2.4 TWh of utility-scale renewables and deferring planned HVDC links with Arizona.^{[4]California ISO, “2025 Annual Curtailment Report,” caiso.com} Australia’s residential battery installations grew 40% in 2025, prompting a 1 GW downgrade of proposed interconnectors. Similar trends in Germany caused regulators to question the Ultranet HVDC corridor.

Segment Analysis

By Transmission Type: Subsea Cables Outpace Overhead Growth

Overhead corridors held 55.1% of the HVDC transmission systems market share in 2025. They remain the least-cost option for long-haul terrestrial transfers; China’s ±800 kV lines deliver power at USD 0.012 per kWh per 1,000 km, roughly 40% below comparable AC rates. Yet environmental opposition and urban density are slowing new overhead builds. Germany buried SuedLink underground at a 35% cost premium to avoid a decade of litigation.

Submarine links are forecast to grow at an 11.3% CAGR between 2026 and 2031, the fastest among transmission types. Offshore wind pipelines in the North Sea alone require 60 km–120 km of export cable per gigawatt, keeping factories at Prysmian and Nexans booked well into 2029. Underground HVDC sits between the two, typically chosen where overhead rights-of-way face insurmountable opposition; Italy’s 1,000 MW Tyrrhenian Link accepted a 35% premium to preserve UNESCO sites.

Note: Segment shares of all individual segments available upon report purchase

By Component: Converter Stations Dominate, Accessories Accelerate

Converter stations garnered 53.5% of 2025 revenue because each GW of VSC capacity demands 400–600 IGBT submodules that can total USD 150 million–USD 300 million per GW. Although cable revenue ranks second, XLPE extrusion bottlenecks now cap cable growth at an 8.5% CAGR through 2031.

Accessories, control systems, DC breakers, and cybersecurity modules will rise at a 10.1% CAGR thanks to emerging meshed grids. Hitachi Energy’s hybrid breaker interrupts 16 kA in 2 milliseconds and has already logged 60 unit orders for North Sea projects.

By Voltage Rating: Ultra-High Voltage Gains Traction

Installations in the 400 to 800 kV band captured 45.9% of 2025 deployments. ±525 kV VSC links balance semiconductor losses with manageable converter costs, making them the default choice for offshore wind exports. Ultra-high-voltage systems above 800 kV will grow at an 11.6% CAGR during 2026-2031, driven by China’s ±1,100 kV corridors carrying 12 GW over 3,000 km with sub-7% losses.

Sub-400 kV links hold niche roles such as electrifying offshore platforms; Norway approved six ±320 kV projects totaling 1.8 GW since 2024. Each voltage class thus aligns to distinct application needs, collectively expanding the HVDC transmission systems market.

Note: Segment shares of all individual segments available upon report purchase

Geography Analysis

Asia-Pacific generated 41.6% of global revenue in 2025 and is expected to post a 9.9% CAGR to 2031. State Grid commissioned the 16 GW Baihetan–Jiangsu and Baihetan–Zhejiang lines in 2025, shrinking east-coast coal burn by 35 million t annually. India’s Phase-II Green Energy Corridors add 6 GW via the 1,830 km Raigarh–Pugalur link and three intra-state projects, cutting renewable curtailment from 12% in 2024 to below 3% by 2028. ASEAN’s 3 GW power-integration corridor and Australia’s 1.5 GW Marinus Link underscore regional momentum.

Europe follows with aggressive offshore mandates. The TEN-E regulation requires HVDC for any wind farm beyond 12 nautical miles, triggering EUR 8 billion of cable and converter orders since 2024. Germany’s SuedLink and A-Nord underground projects will send 8 GW southward by 2028, enabling lignite retirements. The UK’s Dogger Bank export cables and Eastern Link subsea route add another 7.6 GW of transfer capacity. Nordic hydropower balancing via NordLink and North Sea Link earned Norway EUR 500 million in arbitrage revenue during 2025.

North America remains bifurcated. Atlantic offshore wind requires radial HVDC exports, yet onshore converter permitting stretches three years, delaying Empire Wind to 2028. Cross-border schemes such as the 1.25 GW Champlain Hudson Power Express reached service in 2025, delivering Canadian hydropower into New York. Mexico’s Baja-Sonora study and Brazil’s long-distance corridors round out the hemisphere’s activity.