Why conventional maintenance is no longer enough.

For decades, hydropower maintenance followed a straightforward principle: perform inspections and servicing at predefined intervals. While this preventive approach helped ensure reliability, it often led to unnecessary shutdowns and maintenance activities that provided little operational benefit.

The real cost for plant operators is rarely the maintenance itself. The greater impact comes from production losses caused by planned and unplanned outages. As electricity markets become more dynamic and revenue increasingly depends on plant availability, maintenance has evolved from a technical necessity into a strategic business factor.

HybridService addresses this shift by continuously evaluating the actual condition of critical components and systems. Maintenance activities are triggered when they are technically required – not simply because a predefined date has arrived.

From preventive to condition-based maintenance.

One of the most significant advantages of HybridService is the transition from preventive maintenance to true condition-based maintenance.

A practical example is hydraulic oil management. Traditionally, oil changes are performed after a fixed number of operating hours or after a predetermined period. HybridService replaces this approach with continuous monitoring of oil quality parameters such as conductivity and water content. Instead of changing oil according to a schedule, maintenance is only initiated when measured conditions indicate a genuine need. This increases planning accuracy, avoids unnecessary interventions, and reduces maintenance costs without compromising reliability.

Beyond reducing maintenance effort, HybridService helps maximize long-term asset value. Early detection of developing issues and optimized intervention planning extend component lifetime, reduce lifecycle costs, and support more predictable investment decisions.

Detecting problems before they become failures.

The true value of continuous monitoring becomes evident when it identifies developing issues long before they lead to downtime.
HybridService continuously evaluates a wide range of operating parameters, including:

🔹   Vibrations
🔹   Pressures
🔹   Electrical performance data
🔹   Water levels and net heads
🔹   Temperatures
🔹   Guide vane and nozzle positions
🔹   Oil quality
🔹   Sealing system behavior

Rather than evaluating individual measurements in isolation, HybridService correlates multiple data sources to identify meaningful trends and anomalies. This creates a comprehensive picture of plant health and enables early intervention when required.
 

Real-world results: Fewer outages, greater reliability.

Operational experience has already demonstrated measurable benefits.

In one Pelton power plant, continuous monitoring detected bearing degradation long before it would have been identified during a conventional inspection. This provided the operator with sufficient time to order spare parts and schedule maintenance during a period of lower production, avoiding costly unplanned downtime.

In another application, HybridService was used to monitor wear on labyrinth sealing systems in high-sediment environments. By analyzing pressure changes, axial forces, bearing temperatures, and efficiency losses, Global Hydro developed accurate predictions for the optimal replacement timing of critical sealing components.

The result: Maintenance can be planned proactively, components can be utilized more effectively, and risks are significantly reduced.

Suitable for both new and existing hydropower plants.

HybridService is not limited to new installations or Global Hydro equipment. The system can be integrated into existing power plants regardless of manufacturer or control technology. Using open industrial communication protocols, relevant operational data can be collected and analyzed even in older facilities. This enables operators of aging hydropower assets to gradually transition from traditional maintenance concepts toward modern, condition-based asset management without requiring extensive plant modifications.

Continuous development for future requirements.

HybridService is designed as a continuously evolving system.

Global Hydro is constantly expanding analytical models, improving prediction accuracy, and integrating additional external factors into maintenance planning. Future developments include the incorporation of electricity market forecasts and inflow predictions, allowing maintenance windows to be optimized not only from a technical perspective but also from an economic one.

This creates a maintenance strategy that aligns operational reliability with market opportunities and revenue optimization.

A new benchmark for hydropower service.

The hydropower industry is moving away from rigid maintenance schedules toward intelligent, data-driven decision-making. HybridService represents this transformation by combining continuous monitoring, AI-supported analytics, and expert engineering support within a single integrated service concept.

For operators, asset owners and investors, the benefits are clear:

🔹   Higher plant availability
🔹   Reduced downtime
🔹   Lower maintenance costs and lifecycle costs
🔹   Earlier fault detection
🔹   Increased operational reliability
🔹   Improved maintenance planning
🔹   Greater predictability for investment and operational decisions

HybridService is more than a digital tool. It is a next-generation asset management and service philosophy that combines technology, expertise and real-world operational knowledge to maximize hydropower performance, protect asset value and support long-term investment security throughout the entire plant lifecycle.