Finn
EC Oil and Gas · Colombia · Integrated energy · State-linked · Thesis updated August 11, 2026

Better wells and new gas, but tax clouds remain

01 Running thesis

Good execution, hard local questions

The bull case starts with operations. Ecopetrol is finding more gas and oil. The new Sandia-1 discovery confirms Caribbean offshore gas potential, and Copa Sul-1 tested at strong rates. In the United States, an accelerated seven-well campaign in the Permian basin is expected to add 4,000 to 5,000 barrels per day.

The growth plan looks outside Colombia as well. Ecopetrol is nearing the close of its Brava Energia acquisition in Brazil. If the deal finalizes in the third quarter of 2026, it should immediately add about 42,000 barrels of oil equivalent per day to the company.

The bear case remains serious. DIAN, Colombia’s tax authority, is seeking COP 9.4-9.6 trillion for 2022-2024 fuel import VAT, penalties, and interest. Ecopetrol says the risk of losing is very low, but the court phase may take 3 to 6 years. Operations are also exposed to local disruptions. A recent 76-day blockade in the Meta department deferred up to 23,000 barrels per day of production before lifting.

Finn’s overall view is middle of the road. Ecopetrol is performing well operationally, but the stock still has to carry oil price swings, political and tax risks, physical blockades, and a valuation that reflects these ongoing challenges.

Aug 2026Q2 2026 results confirmed a new offshore gas discovery at Sandia-1 and a pending close for the Brava Energia deal. A recent 76-day blockade in the Meta department also lifted.
May 2026Q1 2026 added two growth vectors: Copoazú-1 confirmed new offshore gas accumulations separate from Sirius, and Ecopetrol kept moving toward a controlling Brava Energia stake.
Apr 2026The 2025 Form 20-F confirmed the four main revenue sources and the four reportable segments. The business mix stayed intact.
Mar 2026Ecopetrol reported 121% reserve replacement, its best level in four years, and moved Lorito and Orca forward. The DIAN case shifted to a 3 to 6 year court path, reducing near-term liquidity fear.
Nov 2025Management said it had no interest in selling the Permian assets, while still reviewing the joint venture structure. The Statkraft solar portfolio closed, adding to smaller transition options.
Aug 2025Production reached 751,000 barrels of oil equivalent per day for the semester, the highest level in a decade. Lorito was declared commercially viable with about 250 million barrels of recoverable resources.
May 2025The COP 9.4 trillion DIAN claim raised the risk profile. Ecopetrol also flagged partner uncertainty in South Caribbean offshore blocks and kept $500 million of capital flexibility.
Apr 2025The 2024 Form 20-F did not change the main thesis. It did remind investors that reserve estimates can move with regulation and market assumptions.
02 Business model

Barrels, pipes, refineries, and wires

Ecopetrol is an integrated energy company. It finds and produces crude oil and natural gas, moves hydrocarbons through pipelines, turns crude into fuels and petrochemicals, and owns ISA, which runs power transmission and toll road concessions in Latin America.

The group has four main revenue sources: sales of crude oil and natural gas, hydrocarbon transport services, sales of refined products and biofuels, and energy transmission plus toll road concessions. That matters because oil still drives the cycle, while ISA helps smooth the ride.

The model works when Ecopetrol keeps fields producing, replaces reserves, runs refineries well, and earns regulated or contracted fees from transport and transmission assets. It breaks when Brent falls, local taxes rise, courts freeze cash, pipelines are blocked, or weather cuts production and demand patterns.

03 Product portfolio

What Ecopetrol sells

Cash cow

Crude oil

Crude oil is the core profit engine. It also makes Ecopetrol highly exposed to Brent prices and export taxes.

Growth engine

Natural gas

Gas is the main transition fuel and supply gap answer. Sirius, Orca, Sandia-1, Copoazú-1, and imported LNG plans are central to this push.

Steady

Refined fuels

Gasoline, diesel, jet fuel, LPG, and other products come mainly from Barrancabermeja and Cartagena. Refining margins recently hit a record $29.8 per barrel.

Cash cow

Hydrocarbon transport

Pipelines and logistics move crude and products for Ecopetrol and third parties. This segment earns fees, but it is exposed to attacks, blockades, and volume changes.

Steady

Power transmission and toll roads

ISA gives Ecopetrol regulated infrastructure cash flow across Latin America. It helps diversify the group, but regulation in Brazil can still hit earnings.

Option

Renewables and low-carbon fuels

Solar projects, wind developments, and sustainable aviation fuels are smaller today. They give Ecopetrol options if the energy mix shifts faster.

04 Business segments

Oil still pays most bills

Exploration and Production51%modest
Transport and Logistics24%flat
Refining and Petrochemicals6%flat
Energy Transmission and Toll Roads Concessions19%modest

The mix uses 2025 EBITDA contribution from Ecopetrol’s 2025 results release. Exploration and Production led the group, while ISA made the company less dependent on oil but did not remove oil price risk.

05 Risk factors

What could go wrong

DIAN tax case

High impact · Medium odds

DIAN is seeking COP 9.4-9.6 trillion for 2022-2024 fuel import VAT, penalties, and interest. Ecopetrol says the risk of loss is very low, and the administrative phase is complete. The court phase may take 3 to 6 years, so the overhang can last even without a cash hit soon.

We watchAny court ruling, settlement talk, provision change, or cash restriction tied to the DIAN claim.

Oil price drops

High impact · Medium odds

Ecopetrol’s highest-profit segment is still exploration and production. Lower Brent prices can cut revenue, earnings, and cash available for dividends and investment. Management has already discussed capital flexibility to protect production when prices weaken.

We watchBrent price trends, Ecopetrol earnings breakeven comments, and any cut to the annual investment plan.

Colombia policy and fuel rules

High impact · Medium odds

New export and stamp taxes can raise costs. Regulated fuel prices can change reported sales, receivables, and working capital. The fuel price stabilization fund (FEPC) remains a working capital drag pending policy action from the new government.

We watchChanges to export taxes, stamp taxes, fuel price rules, VAT rulings, and FEPC receivable balances.

Blockades and infrastructure attacks

Medium impact · High odds

Ecopetrol depends on fields, roads, power, ports, and pipelines staying open. A recent 76-day blockade in the Meta department deferred up to 23,000 barrels per day. These events cut production, lift logistics costs, and delay projects.

We watchReported production outages, pipeline incidents, field blockades, and rising freight or logistics costs.

Gas project delays

Medium impact · Medium odds

The long-term growth story leans on Sirius, Sandia-1, Copoazú-1, LNG import projects, and other gas supply plans. Offshore projects need permits, civil works, partners, contracts, and large capital budgets. A delay would make Colombia’s gas shortfall harder to solve.

We watchSandia-1 test results, Orca development approvals, Sirius civil works, LNG import milestones, and partner changes.
06 Quick answers

In one breath

What does Ecopetrol do?

Ecopetrol produces oil and gas, transports hydrocarbons, refines crude into fuels, and owns ISA, a power transmission and toll road business. Most profit still comes from hydrocarbons.

Why is the DIAN tax claim important?

The claim is large, at COP 9.4-9.6 trillion, and covers fuel import VAT for 2022-2024. Ecopetrol says it has a very low risk of losing, but the court process may last 3 to 6 years.

Is Ecopetrol becoming a clean energy company?

Not yet. Renewables, wind, solar, LNG, and sustainable fuels are growing options, but oil, gas, pipelines, and refineries still drive the company.

What are the next catalysts for EC stock?

Watch the Brava Energia tender offer closing, Sandia-1 and Copoazú-1 testing, Sirius project progress, policy signals from the new Colombian government, and any DIAN court updates.

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