Celec's Sopladora Plant Returns to Full 487 MW Capacity — Three Units Online Since April 5

Operational Summary

Metric	Value
Installed capacity	487 MW
Units	3 (Unit 1, Unit 2, Unit 3)
Unit 2 nominal output	162.3 MW
Full capacity restoration date	5 April 2026
Operator	Celec Sur (unit of Corporación Eléctrica del Ecuador — Celec EP)
Paute Integral complex share of national demand	~40%

Sources: Expreso (link) and Teleamazonas (link).

The Outage

Incident: 21 July 2023 — "durante el arranque de la unidad 2 se presentó un evento técnico" (Expreso). Unit 2 suffered a technical event during startup.

Component damaged: Turbine shaft ("el eje de la turbina").

Shaft specifications: 40 toneladas, 8.23 metros de largo (Expreso) / "40 toneladas y más de ocho metros de longitud" (Teleamazonas). ~40 metric tonnes, 8+ meters long.

Interim operations: Teleamazonas: plant operated at "80%" capacity from April 2024 onward until shaft replacement.

Restoration

Action taken: Full shaft replacement — "reemplazo del eje de la turbina" (Teleamazonas).

Return to grid: Per Teleamazonas, Unit 2 was "sincronizada nuevamente al Sistema Nacional Interconectado" after reaching "su potencia nominal de 162,3 MW." Per Expreso: "Sopladora empezó a operar con sus tres unidades a partir del 5 de abril de 2026."

Repair cost: Not disclosed in source reporting.

System Implications

Generation additions: Restoration adds ~97 MW of incremental baseload capacity to the Sistema Nacional Interconectado (SNI) — reflecting the 20% gap between prior 80% operation and current 100% nominal output.

Paute Integral context: The complex — comprising Mazar, Molino, Sopladora, and related components — represents "alrededor del 40 % de la demanda nacional" (Expreso). Full Sopladora availability firms the complex's output profile.

Blackout context: Coastal and national blackouts have been a recurring 2024-2026 theme, driven largely by distribution-side constraints (CNEL), Mazar reservoir levels during dry season, and transmission bottlenecks. Sopladora restoration addresses a generation-side gap specifically; it does not resolve the distribution or reservoir-cycle constraints.

Dry season exposure: Q3/Q4 2026 dry season remains the critical stress test. Full Sopladora availability improves hydroelectric dispatch flexibility but does not eliminate thermal-generation dependency during low hydrology periods.

Technical Notes

Turbine shaft failures at scale (40-tonne, 8+ meter components) are unusual operationally and require specialized fabrication. The ~33-month outage window (July 2023 → April 2026) reflects component-manufacturing lead times — large hydroelectric shafts typically have 18-24 month lead times from specification to installation readiness.

The outage is the second major Paute-complex incident in recent years. Prior Mazar sediment-management issues constrained throughput; Unit 2 Sopladora shaft failure removed 162.3 MW of capacity across two consecutive dry seasons.

What to Watch

• Dry season (Q3/Q4 2026) dispatch: Whether full Sopladora availability reduces thermal generation requirements vs. 2024/2025 baselines
• CNEL distribution investments: Generation-side recovery highlights distribution as the binding constraint; infrastructure spending to watch
• Next Paute complex maintenance window: Scheduled major overhauls for other units
• Tariff-recovery analysis: Whether Sopladora restoration enables tariff reductions or rolls through to system-wide pricing neutrality
• Generation mix reporting: CENACE monthly dispatch reports will show Sopladora's incremental contribution
• Coastal blackout recurrence: Distribution-side failures now the primary demand-loss risk; test of how much generation recovery alone can mitigate

Sources: Expreso, Teleamazonas