Türkiye as an Energy Hub: Pipelines, Corridors and Transit Routes Explained

Why It Matters

Is Türkiye an energy hub? Partly yes: it is a major transit and terminal country today, and it is working to become a price-setting gas trading hub tomorrow. Pipelines carrying Caspian, Russian, Iranian and Iraqi energy cross its territory or end on its coast, and its LNG terminals and storage add flexibility. What it lacks, according to many analysts, is a fully liquid, internationally referenced trading market. That is a goal that Turkish officials openly pursue.

This matters because Europe is restructuring its gas supply, Russia, Azerbaijan and Central Asian producers need export routes, and Eastern Mediterranean and Black Sea discoveries are changing the regional map. Anyone trying to understand energy security in Eurasia has to understand which pipelines cross Türkiye and who owns, uses or contests them.

Background

Why Türkiye sits where it does

Türkiye lies between the world's largest proven hydrocarbon reserves (the Caspian basin, Russia, Iran, Iraq and the Gulf) and some of its largest import markets (Europe). It has limited domestic oil and gas production, so for decades its policy has combined two aims: securing its own supply and acting as a bridge for others. Official Turkish descriptions use terms such as 'energy corridor' and 'energy terminal'; the word 'hub' is used more ambitiously for gas trading.

A second geographic factor is the Turkish Straits (the Bosphorus and the Dardanelles). Large volumes of oil leave the Black Sea by tanker through the Bosphorus, an urban waterway in Istanbul. Türkiye has long argued that pipelines to its Mediterranean coast are safer alternatives to additional tanker traffic. The legal framework for passage through the straits is covered in The Montreux Convention Explained: Turkish Straits and Black Sea Security.

The main routes at a glance

Route	Fuel	Approximate length / capacity	Status
Baku–Tbilisi–Ceyhan (BTC)	Crude oil	About 1,768 km (1,099 miles); roughly 1 million barrels per day nominal	Operating since 2006
Kirkuk–Ceyhan (Iraq–Türkiye Crude Oil Pipeline)	Crude oil	Operating since 1977 under a 1973 agreement	Flows halted March 2023; legal and political dispute continues
South Caucasus Pipeline (Baku–Tbilisi–Erzurum)	Natural gas	Links Azerbaijan's Shah Deniz field to Türkiye via Georgia	Gas to Türkiye since 2007
TANAP (Trans-Anatolian Natural Gas Pipeline)	Natural gas	About 1,850 km (1,150 miles); initial 16 bcm per year, of which about 6 bcm for Türkiye and about 10 bcm for Europe	Inaugurated 2018; Europe deliveries from 2020
TAP (Trans Adriatic Pipeline)	Natural gas	About 878 km (545 miles) through Greece, Albania and the Adriatic to Italy; about 10 bcm per year, expandable	Commercial operation since late 2020
TurkStream	Natural gas	Two offshore lines of 15.75 bcm each (31.5 bcm in total)	Opened January 2020
Blue Stream	Natural gas	Russia to Türkiye under the Black Sea; about 16 bcm per year	Operating since 2003
Iran–Türkiye (Tabriz–Ankara)	Natural gas	Long-term contract	Operating since 2001; contract widely reported to expire in 2026

bcm = billion cubic metres. Capacities are nominal design figures; actual flows vary by year. Check BOTAŞ, the Ministry of Energy and Natural Resources and operator websites for current data.

Chronology

Year	Event
1973–1977	Iraq and Türkiye sign the crude oil pipeline agreement; Kirkuk–Ceyhan operations begin in 1977
1984–1987	Türkiye signs its first natural gas import deal with the Soviet Union; deliveries begin in 1987
1994	Marmara Ereğlisi LNG terminal begins operating
1999	Istanbul Declaration and intergovernmental agreements launch the BTC project
2001	Iranian gas begins flowing to Türkiye
2003	Blue Stream begins delivering Russian gas under the Black Sea
2006–2007	BTC oil reaches Ceyhan; South Caucasus Pipeline begins supplying gas to Türkiye
2012	Türkiye and Azerbaijan sign the TANAP intergovernmental agreement
2016	Russia and Türkiye sign the TurkStream intergovernmental agreement
2018	TANAP is inaugurated; Gas Exchange Istanbul (GİAŞ) starts as a gas trading platform
2020	TurkStream opens (8 January); TAP starts delivering to Italy; Tuna-1 gas discovery in the Black Sea announced
2022	EU and Azerbaijan sign a gas memorandum; Vladimir Putin proposes a gas hub in Türkiye
2023	Kirkuk–Ceyhan flows halted (March); first Sakarya field gas to the grid (April)
2025	Ukrainian transit of Russian gas to the EU ends (1 January); Turkmen gas swap via Iran begins; Azerbaijani gas begins reaching Syria via Türkiye; Türkiye gives notice to end the 1973 Iraq pipeline agreement

The Southern Gas Corridor: TANAP and TAP

The Southern Gas Corridor is a chain of projects that carries gas from Azerbaijan's Shah Deniz field to Europe without passing through Russia. Gas travels through the South Caucasus Pipeline (Azerbaijan and Georgia), then TANAP across Türkiye from the Georgian border to the Greek border, then TAP through Greece and Albania to southern Italy. TANAP shareholders include SOCAR (Azerbaijan's state energy company) as majority owner and BOTAŞ (Türkiye's state pipeline company) with 30 percent.

TANAP's design allows scaling up in stages beyond its initial 16 bcm per year. In July 2022 the European Commission and Azerbaijan signed a memorandum aiming to roughly double Azerbaijani gas exports to the EU to at least 20 bcm per year by 2027. Whether that target is met depends on upstream production and on investment decisions, which are made by producers and shareholders rather than by governments alone.

The corridor has also begun to serve new customers through Türkiye. Reports and official announcements indicate that Turkmen gas has been swapped to Türkiye via Iran since March 2025 and that Azerbaijani gas has reached Syria through Türkiye since August 2025. Readers should treat volumes in these arrangements as modest compared with the main European flows.

For a deeper technical look, see TurkStream and TANAP Explained: How Gas Reaches Europe Through Türkiye.

TurkStream and Russian Gas

TurkStream has two parallel offshore lines from Russia's Black Sea coast to Kıyıköy in Thrace. One line mainly serves the Turkish market; the other continues to Bulgaria, Serbia, Hungary and other southeastern European markets. Together they have a nominal capacity of 31.5 bcm per year.

Its significance changed on 1 January 2025, when the transit contract through Ukraine expired and was not renewed. TurkStream became the only Russian pipeline route delivering gas to the EU. This is a factual consequence of the end of the Ukrainian transit deal, and it places the pipeline at the centre of EU debates on reducing Russian energy dependence.

In October 2022 President Putin proposed creating a major gas hub in Türkiye to redirect Russian exports, and Turkish officials said they would study it. Turkish and Russian officials have discussed it since, but as of this writing there is no widely documented, fully operating hub built on that proposal. Readers should treat claims that such a hub is already functioning with caution.

Oil: BTC, Kirkuk–Ceyhan and the Straits

The Baku–Tbilisi–Ceyhan pipeline carries Azerbaijani crude, and some Central Asian crude, to the Ceyhan terminal on Türkiye's Mediterranean coast. The project was backed politically by Türkiye, Azerbaijan, Georgia and the United States in the 1990s, and BP leads its operation. It remains one of the main non-Russian export routes for Caspian oil.

The Kirkuk–Ceyhan pipeline has a different story. It carried Iraqi oil from the 1970s, including crude from the Kurdistan Regional Government (KRG) area. In March 2023 an International Chamber of Commerce arbitration tribunal ruled in Iraq's favour regarding unauthorized exports by the KRG between 2014 and 2018, and Türkiye halted flows. Türkiye later announced it would end the 1973 agreement, with notice given in July 2025. Negotiations among Baghdad, Erbil and Ankara about restarting or replacing the arrangement have continued, so the status should be checked in current sources.

Meanwhile, tanker traffic through the Bosphorus remains a policy concern. Türkiye regulates safety and navigation in the straits within the Montreux framework, and has promoted bypass pipelines as a way to ease congestion.

LNG, Storage and Domestic Supply

Türkiye's annual gas consumption is on the order of 50 to 60 bcm, depending on weather and industrial demand. To diversify away from pipeline contracts, it has built several LNG import facilities, including the Marmara Ereğlisi and Aliağa terminals and floating storage and regasification units (FSRUs) in the Mediterranean and the Aegean, notably at Dörtyol and in the Gulf of Saros. It imports LNG from suppliers such as Algeria, Nigeria, the United States and others.

Underground storage is the second pillar. The Silivri facility near Istanbul uses depleted gas fields, and the Tuz Gölü facility in central Anatolia uses salt caverns. Ankara has announced plans to expand storage capacity significantly. Flexibility matters for a hub: traders need to be able to store, swap and re-export gas.

The third pillar is domestic production. The Sakarya Gas Field in the Black Sea, whose first major discovery (Tuna-1) was announced in August 2020, started producing in April 2023, with gas processed at Filyos. The Presidency has announced subsequent discoveries, putting cumulative Sakarya resources in the hundreds of billions of cubic metres, though these are resource estimates and not proven, producible reserves in the strict industry sense. Domestic output remains small relative to national demand, but it supports Ankara's argument that it is building a more balanced portfolio.

Eastern Mediterranean and Black Sea Prospects

The Eastern Mediterranean contains major discoveries such as Zohr (Egypt), Leviathan and Tamar (Israel) and Aphrodite (Cyprus). The proposed EastMed pipeline from Israel and Cyprus to Greece and Italy was backed by an intergovernmental agreement signed in 2020, but it faced cost and commercial questions, and reports in early 2022 indicated that the United States no longer supported it. Egypt's LNG plants have become the main export route for regional gas.

Because Türkiye has the longest Mediterranean coastline in the region, many analysts consider a Türkiye-linked route technically the shortest for some Israeli volumes. Political questions on maritime jurisdiction and Cyprus have kept such options theoretical. For the legal arguments, see Eastern Mediterranean Maritime Jurisdiction: Continental Shelf, EEZ and the Blue Homeland and Cyprus and the 1960 Treaty of Guarantee: What It Says and Why It Matters.

In the Black Sea, besides Sakarya, Bulgaria, Romania and other littoral states have offshore projects. Security conditions after Russia's invasion of Ukraine have affected insurance, shipping and investment. Energy and trade corridors also intersect with the Eurasian transport network discussed in The Middle Corridor Explained: Türkiye, Central Asia and Eurasian Trade Routes.

Key Players & Positions

European Union

The European Commission treats the Southern Gas Corridor as a strategic route for diversification and has included gas interconnections in its priority infrastructure policy. Since the 2022 REPowerEU plan, Brussels has aimed to end dependence on Russian fossil fuels and has set out a roadmap to phase out Russian gas imports by the end of 2027. At the same time, EU institutions have criticized Turkish drilling in disputed Eastern Mediterranean areas, notably in European Council conclusions in 2019 and 2020, while keeping energy cooperation with Ankara on the agenda. Member states differ: Hungary and Slovakia continue to rely on Russian pipeline gas, while others push for faster phase-out.

Russia

Moscow presents TurkStream and Blue Stream as commercial projects with a reliable NATO-member partner and has pitched Türkiye as a distribution centre for Russian gas to third markets. Russian officials, including President Putin in October 2022, have publicly proposed a hub in Türkiye. Russian exporters face EU phase-out plans and Western sanctions, so Türkiye and southeastern Europe are central to their remaining pipeline strategy.

Azerbaijan

Azerbaijan and SOCAR describe the Southern Gas Corridor as a long-term strategic project and a pillar of the country's economy and foreign policy. President Ilham Aliyev has repeatedly underlined that the project depends on cooperation with Türkiye and Georgia and on EU demand. Analysts note that Azerbaijan's export capacity is limited by upstream production and domestic demand, which restricts how far it can replace Russian volumes.

Greece, Cyprus, Israel and Egypt

Greece and the Republic of Cyprus argue that Türkiye's exploration activities in areas they claim as their exclusive economic zones violate international law, and they support routes that bypass Türkiye. Israel and Egypt prioritize commercially workable export routes, with Egypt's LNG plants currently the main option. These parties formed the East Mediterranean Gas Forum in 2019, which Türkiye is not part of.

Iraq, the KRG, Iran and Central Asia

Baghdad holds that oil exports must go through the federal government, a position underpinned by the ICC ruling in its favour. The KRG argues that its constitutional rights include managing resources in its region. Iran remains a long-term gas supplier to Türkiye despite periodic disputes on pricing and volumes, and Turkmenistan and Kazakhstan look to Türkiye and the Caspian–Caucasus routes to reach new markets.

United States

Washington has historically supported the Southern Gas Corridor and BTC as ways to diversify European supply, and is today also a major LNG supplier to Europe and Türkiye. US energy policy toward Eastern Mediterranean projects has shifted over time, as the EastMed episode shows.

Türkiye's Strategic Position

The following points summarize Ankara's stated policy as expressed by Turkish government sources. They are Ankara's own assessments, and the previous sections should be read as the neutral factual baseline.

• Türkiye describes itself as a reliable energy corridor and terminal that benefits both producers and consumers. According to the Turkish Ministry of Foreign Affairs, energy security is a core element of Türkiye's foreign policy, and Ankara argues that diversifying routes, sources and suppliers is good for Türkiye, Europe and producers. President Erdoğan expressed the same line at the 2018 TANAP inauguration and the 2020 TurkStream opening, calling both projects contributions to regional energy security. The legal basis is a set of intergovernmental agreements, for example the 1999 BTC agreements, the 2012 TANAP agreement and the 2016 TurkStream agreement.
• Ankara seeks to move from transit to trading. Energy and Natural Resources Minister Alparslan Bayraktar and his predecessors have repeatedly said that Türkiye wants to become a regional gas trading centre, supported by LNG capacity, storage expansion and Gas Exchange Istanbul (GİAŞ), which operates under the national energy regulator, EPDK. Turkish officials link the hub concept to the Russian proposal of 2022 but also to Azerbaijani, Turkmen, Iraqi and Eastern Mediterranean supply.
• Türkiye argues that the Straits require bypass solutions and safe navigation. Ankara holds that the Bosphorus is a densely populated urban strait and that pipelines to the Mediterranean reduce risks. It stresses that it implements the 1936 Montreux Convention, which guarantees freedom of commercial passage, together with national safety regulations, and presents pipelines as complementary to that regime.
• Ankara defends its offshore activity as lawful and as protecting Turkish and Turkish Cypriot rights. According to the Turkish Foreign Ministry, Türkiye's continental shelf is defined by the principle of equity, islands cannot generate full maritime zones that cut off the coast of a longer-coastline state, and the Turkish Cypriots have equal rights to hydrocarbons around Cyprus. Ankara says that no Eastern Mediterranean gas export scheme can be sustainable without Türkiye and that cooperation, not exclusion, would be cheaper and faster.
• Energy policy is tied to climate goals. Türkiye ratified the Paris Agreement in 2021 and set a net-zero target for 2053, announced by the Presidency. It presents gas as a transition fuel alongside renewables, nuclear power (the Akkuyu project) and energy efficiency, and it will host COP31 in Antalya in November 2026, with Australia leading the negotiations. See COP31 and Türkiye's Climate Diplomacy: What to Know.

On Kirkuk–Ceyhan, Turkish officials have said that the 1973 agreement is outdated and that Türkiye wants a new framework with Iraq, while also stating that it has acted in accordance with its commitments. Iraqi officials dispute this reading with reference to the arbitration award. Readers should consult both sides' primary statements.

Source Comparison

Different sources emphasize different aspects of the same facts. Neither framing is a substitute for checking primary data from operators, regulators and customs or energy agencies.

Question	Frequent framing in Western/international media	Frequent framing in Turkish official sources	Editorial note
Is Türkiye an energy hub?	A transit state with ambitions; a true hub needs liquidity, transparent pricing and regulatory reform	An energy corridor and terminal now, a trading hub in progress	Both agree on the physical infrastructure; they differ on market maturity
TurkStream	A leverage question for Russia and a challenge to EU phase-out	A commercial project that supports Türkiye's and southeastern Europe's supply security	The pipeline is operating; its future use depends on EU law and sanctions
Southern Gas Corridor	A diversification success of limited scale	A strategic project that proves Türkiye's reliability	The corridor's volumes are meaningful but smaller than historical Russian volumes to the EU
Eastern Mediterranean	Türkiye as a disruptor of regional projects	A country excluded from regional frameworks despite its coastline and Turkish Cypriot rights	The dispute is legal as well as political; see the maritime jurisdiction guide
Kirkuk–Ceyhan	Türkiye bound by an arbitration ruling; Baghdad–Erbil dispute	A bilateral agreement that needs updating; the ruling is not the whole story	Status is changing; check dates

For a wider discussion of how this site separates facts from positions, see Editorial Principles and Primary Source Standards, and for common misleading claims about Türkiye in international coverage see Fact Check: Common Claims About Türkiye in International Media.

What to Watch

• Russian gas phase-out in the EU: how far EU rules reduce TurkStream deliveries to southeastern Europe, and whether Türkiye picks up volumes.
• Azerbaijani export growth: progress on Shah Deniz and new fields, and whether TANAP and TAP capacity expansions are sanctioned.
• Iran contract expiry in 2026: renewal, change or substitution with other sources such as LNG or Turkmen swaps.
• Iraq–Türkiye oil arrangements: the replacement or revival of Kirkuk–Ceyhan after the notice period.
• Sakarya Phase 2 and storage expansion: increased domestic output and storage would improve Türkiye's position as a trading hub.
• Eastern Mediterranean diplomacy: whether energy cooperation emerges despite unresolved maritime and Cyprus questions.

Key Terms & Related Guides

• Energy hub: a place where multiple supply sources and markets meet and where gas or oil is priced and traded, not only moved. Physical transit is necessary but not sufficient.
• Transit country: a state that carries energy across its territory for others, usually under intergovernmental agreements and tariffs.
• Southern Gas Corridor: the chain of pipelines (SCP, TANAP, TAP) bringing Azerbaijani gas to Europe.
• TANAP / TAP: the Trans-Anatolian Natural Gas Pipeline across Türkiye and the Trans Adriatic Pipeline across Greece, Albania and the Adriatic to Italy.
• BOTAŞ: Türkiye's state-owned petroleum pipeline corporation, the dominant gas wholesaler. EPDK is the Energy Market Regulatory Authority.
• BTC: the Baku–Tbilisi–Ceyhan crude oil pipeline.
• LNG / FSRU: liquefied natural gas and the floating storage and regasification units that convert it back to gas.
• bcm: billion cubic metres of gas; 1 bcm is about 35 billion cubic feet.
• EEZ / continental shelf: maritime zones defined under the law of the sea, whose delimitation is contested in the Eastern Mediterranean.

Related guides:

• TurkStream and TANAP Explained: How Gas Reaches Europe Through Türkiye
• The Middle Corridor Explained: Türkiye, Central Asia and Eurasian Trade Routes
• Eastern Mediterranean Maritime Jurisdiction: Continental Shelf, EEZ and the Blue Homeland
• The Montreux Convention Explained: Turkish Straits and Black Sea Security
• COP31 and Türkiye's Climate Diplomacy: What to Know
• About Doctrinereview: Mission, Transparency and Editorial Team and Doctrinereview FAQ: Sources, Methodology and Perspective

Perspective Note

Doctrinereview presents global and regional affairs with a dedicated perspective from Türkiye. Sections marked 'Türkiye's Strategic Position' reflect official Turkish policy as stated by Turkish government sources. This article was prepared by the Doctrinereview Editorial Team; figures are approximate and should be verified against operator and ministry data.

Cross-Publication Dossiers & Sister Desk Perspectives

For complementary primary-source analysis across our specialist editorial network, consult:

• Region Scope: The 2019 Türkiye–Libya Maritime Memorandum Explained: Legal Basis, Objections and Impact — What the 27 November 2019 Türkiye–Libya maritime memorandum says, the equity and coastline argument, and objections from Greece, Cyprus, Egypt and the EU.
• The Political Axis: The 2019 Türkiye–Libya Maritime Memorandum: What It Says and Why It Matters — Türkiye Libya maritime memorandum 2019 explained: what the 27 Nov 2019 MoU delimits, its legal basis, and why Greece, Egypt, Cyprus and the EU object.
• The Nations Dialogue: The Seville Map Explained: Why Türkiye Rejects This Maximalist Maritime Claim — What is the Seville Map? Learn how the EU-commissioned study treats islands, why Türkiye rejects it, and what Greece, Cyprus and the EU argue.