Energy Transition Corridors: Pipelines, Power Lines, Hydrogen and Carbon

The energy transition is also a construction project

Moving to lower-carbon energy changes what flows across borders and how. Oil and gas still move through pipelines and tankers, but electricity, hydrogen and captured carbon dioxide need their own infrastructure: power lines under the sea, new pipelines, ports and storage sites. Each of these "corridors" costs billions, takes years to permit and depends on rules set by several governments. This guide explains the main types, with examples, and the questions that decide whether a corridor gets built.

Four kinds of energy corridor

Corridor type	What moves	Examples	Typical bottleneck
Oil and gas pipelines and LNG	Crude oil, natural gas, liquefied natural gas	Trans Mountain Expansion in Canada, which entered service in 2024 and roughly tripled the pipeline's capacity; the cancelled Keystone XL; US LNG export terminals	Permitting, legal challenges, long-term contracts
Electricity interconnectors	Power between grids	North Sea Link between the UK and Norway; NordLink between Germany and Norway; Viking Link between the UK and Denmark; the Champlain Hudson Power Express bringing Canadian hydropower towards New York City	Grid connection, cost overruns, regional politics
Hydrogen	Hydrogen or its carriers such as ammonia	Germany's planned hydrogen core network, approved in 2024; port projects in the Netherlands and elsewhere	High cost of green hydrogen, uncertain demand
Carbon capture and storage	Captured carbon dioxide	Norway's Northern Lights project, designed to receive CO2 from European emitters by ship for storage under the North Sea	Cost, regulation and long-term liability for stored CO2

Oil and gas are not gone, but contracts are shifting

The US became the world's largest exporter of liquefied natural gas in 2023, which shifted gas flows toward Europe after Russian pipeline supplies fell. Meanwhile, in North America, the experience of Keystone XL, cancelled in 2021 after years of legal and political dispute, and the Trans Mountain Expansion, completed in 2024 after large cost increases, shows how long and uncertain large pipeline projects can be. Investors in this segment focus on long-term contracts, regulated returns and exposure to policy change.

Grids are the quiet bottleneck

Renewable power is often generated far from where it is used, and new wind and solar projects frequently wait years for grid connection. Cross-border interconnectors help balance supply: Norway's hydropower reservoirs, for example, can supply power to neighbours when wind output falls. Interconnectors are usually financed through regulated returns or long-term capacity payments, which makes them more predictable than merchant projects but dependent on regulators in more than one country.

Hydrogen: promising, but still searching for demand

Green hydrogen, made by splitting water using renewable electricity, could decarbonise steel, fertiliser and shipping. Its main hurdles are cost and the lack of committed buyers, which makes pipelines and ports difficult to finance. The EU has set up mechanisms such as its Hydrogen Bank to support early projects, but many announced projects have been delayed or cancelled. Investors should separate announced capacity from projects with signed purchase contracts and financing.

Carbon corridors and the trade rules that follow

Moving captured CO2 requires pipelines or ships to storage sites, and a regulatory framework that settles who is responsible for the gas over decades. Alongside this, the European Union's Carbon Border Adjustment Mechanism (CBAM) is changing trade itself. It began with a reporting phase in October 2023 and starts charging importers in 2026 for the embedded emissions of products such as steel, aluminium, cement, fertilisers, electricity and hydrogen. Exporters to the EU, from Turkey to India and Africa, must now measure and report the carbon content of their goods, and low-carbon producers may gain a price advantage.

How corridors get financed

• Regulated asset base. Grid and pipeline owners earn an allowed return approved by regulators.
• Long-term contracts. Buyers commit to take energy or capacity for 10 to 20 years, which lets lenders finance construction.
• Multilateral development banks and export credit agencies. They lend to or guarantee projects, particularly in emerging markets.
• Green and sustainability-linked bonds. Proceeds are earmarked for qualifying infrastructure.
• Government support. Subsidies, tax credits and guarantees can decide whether a project is viable.

Questions to ask about any energy corridor

1. Who has committed to buy or use the capacity, and for how long?
2. Which governments must approve it, and what happens if one changes its policy?
3. What are the construction risks: cost, delay, supply of equipment?
4. How is the price set, by regulators, contracts or the market?
5. What are the climate and physical risks to the route itself?
6. If demand for the product is lower than expected, who bears the loss?

For the broader picture of routes and chokepoints, see our guide to global trade corridors, and for the minerals behind the transition, see critical minerals and chip supply chains.

Frequently asked questions

Why are interconnectors so valuable?

They let countries share supply: one with surplus renewable power can sell to a neighbour with a shortage, which reduces costs and the need for backup plants.

Is green hydrogen competitive yet?

Not widely. Without subsidies or carbon pricing it is usually more expensive than fossil-based hydrogen, which is why projects tend to rely on public support and contracts with industrial buyers.

What does CBAM mean for non-EU companies?

Companies exporting covered products to the EU must report the emissions embedded in those goods and, from 2026, importers pay for them. It encourages cleaner production and may shift trade toward lower-carbon suppliers.

Are these projects safe investments?

They carry specific risks: permitting, construction, policy change and demand. Regulated and contracted projects are usually safer than those that depend on future prices.

Sources and further reading

• International Energy Agency, World Energy Investment and World Energy Outlook, on iea.org.
• European Commission, Carbon Border Adjustment Mechanism, on taxation-customs.ec.europa.eu.
• Canada Energy Regulator, information on the Trans Mountain Expansion, on cer-rec.gc.ca.
• Northern Lights, project information, on norlights.com.
• Gas Infrastructure Europe and ENTSO-E, European gas and electricity network planning, on entsoe.eu.

Project status, rules and costs change often; verify against the sources above. This article is general information, not investment advice.