The Coca Codo Sinclair (CCS) hydroelectric plant, built by the Chinese firm Sinohydro, is Ecuador’s largest infrastructure project and arguably its most controversial. As of April 2026, the project has reached a critical legal and technical crossroads.
🏗️ The Infrastructure at a Glance
Located between the Napo and Sucumbíos provinces, the dam was designed to generate 1,500 MW, theoretically covering 30% of Ecuador’s electricity demand. Unlike traditional dams, it is a “run-of-river” project that diverts water through a 24-kilometer tunnel to turn turbines.
⚠️ Current Technical Problems
The dam has been plagued by defects since its inauguration in 2016. The primary issues today include:
- Thousands of Micro-cracks: Over 17,000 cracks have been identified in the eight “distributors” (the massive steel caracol-shaped structures that feed water into the turbines). These structures operate under immense pressure, and the cracks threaten the long-term integrity of the plant.
- Equipment Replacement: The Ecuadorian government recently announced that “critical equipment” with technical failures—specifically these water distributors—will finally be replaced as part of a new maintenance agreement with Power China (Sinohydro’s parent company).
- Operational Limitations: Due to these structural risks, the plant rarely operates at its full 1,500 MW capacity, often restricted to lower outputs to prevent catastrophic failure.
⛈️ The Geographical Threat: Regressive Erosion
The dam sits in a geologically volatile region near the Reventador Volcano.
- The Coca River Crisis: Following the collapse of the San Rafael Waterfall in 2020, a phenomenon known as regressive erosion began moving upstream.
- “Hungry Waters”: Experts argue that the dam traps sediments, making the downstream water “sediment-hungry” and more erosive. This erosion has already destroyed segments of major oil pipelines (SOTE and OCP) and a highway.
- Threat to the Intake: The erosion is currently migrating toward the dam’s water intake structure. If the riverbed collapses near the intake, the entire $3.2 billion project could become a “stranded asset,” unable to capture water.
⚖️ Where it Sits Now (April 2026)
Ecuador and Sinohydro have recently moved to settle their long-standing legal battle:
- Arbitration Settlement: In early 2026, Ecuador’s state electricity company (CELEC) agreed to drop a $580 million international arbitration claim against Sinohydro.
- The Handover: Sinohydro has formally requested the definitive reception of the project by April 17, 2026.
- Operation Shift: The current plan is for Power China to take over the total operation and maintenance of the plant. This shift is seen as a way for the Chinese firm to “fix their own mistakes” while ensuring the plant stays online, though critics argue it grants too much control to the firm that built the faulty structure.
Ecuador negotiates handover of Coca Codo Sinclair
This news report explores the high-stakes negotiations and the structural “time bomb” facing the dam as the government seeks to settle its disputes with Sinohydro.
https://youtu.be/O_uofAqdE1M?si=izNCct-YlXuAICzu
