See Every Curve: Uncover Hidden Solar Performance Losses with In-Situ IV Curve Monitoring

Real-Time Insight into Your Solar Plant's True Performance

Across Spain, solar asset owners are under increasing pressure to maximise energy production from existing plants. As portfolios age, even small losses from soiling, module degradation, mismatch, or hidden underperformance can significantly impact revenue over the lifetime of an asset.

The challenge is that these losses rarely appear all at once. They develop gradually and often remain hidden within string or plant-level performance data. As a result, many operational decisions, from cleaning schedules to performance guarantee claims, continue to rely on assumptions rather than measured evidence.

The RDE300i changes that.

By continuously measuring the IV curve of a module directly within the string, the RDE300i provides real-world performance data from the field, revealing where energy is being lost and helping teams understand why. This level of insight enables asset owners and O&M providers to move from reactive troubleshooting to data-driven optimisation.

For existing solar plants, this enables asset owners and O&M providers to move from reactive troubleshooting to data-driven optimisation, improving confidence in operational decisions

For Asset Owners: Make Better Investment Decisions with Measured Data

When margins are under pressure, visibility matters.

Real-time IV curve monitoring helps asset owners understand the true health of their solar assets and identify opportunities to recover lost performance before losses accumulate.

With continuous IV curve data, asset owners can:

• Increase energy yield by identifying hidden losses that traditional monitoring systems often miss.
• Establish a measurable performance baseline to quantify improvements before and after corrective actions.
• Support warranty, insurance, and performance guarantee claims with objective field measurements.
• Achieve higher confidence in IEC 61724-1 performance assessments by comparing Pmax against Isc rather than relying solely on irradiance-based indicators.
• Evaluate repowering and life-extension opportunities using real operating data instead of assumptions.

Over time, this creates a documented performance history that supports portfolio valuation, refinancing discussions, acquisition due diligence, and long-term asset management strategies.

The result is clearer visibility into where value is being lost and where it can be recovered.

For O&M Providers: Deliver Measurable Value to Your Customers

For O&M providers, proving performance improvements is becoming just as important as achieving them.

The RDE300i helps operators identify issues faster, optimise maintenance activities, and demonstrate the impact of their work with data-backed evidence.

Benefits include:

• Resolve performance disputes with confidence using measured IV curve data instead of estimated loss calculations.
• Reduce unnecessary site visits by remotely identifying whether losses are caused by soiling, degradation, mismatch, or other issues.
• Optimise cleaning schedules based on actual energy losses rather than fixed maintenance intervals.
• Create higher-value service offerings through degradation assessments and performance optimisation reporting.
• Detect non-uniform soiling and underperforming strings that can remain hidden in plant-level monitoring systems.

For organisations managing multiple sites across Spain and Europe, this approach enables a more standardised and scalable maintenance strategy, helping transform operational experience into repeatable best practices.

Why In-Situ IV Curve Monitoring Matters for Existing Solar Assets

Many plants already collect vast amounts of operational data. The challenge is knowing whether that data accurately reflects the condition of the modules generating revenue.

In-situ IV curve monitoring adds a layer of performance intelligence that traditional monitoring systems cannot provide on their own. By continuously measuring real module behaviour in operating conditions, teams gain a clearer understanding of:

• Actual degradation rates
• Soiling-related losses
• Module mismatch
• Performance drift over time
• The effectiveness of corrective actions

This allows decisions to be based on evidence rather than assumptions, helping maximise energy production while reducing operational uncertainty.

Turn Hidden Losses into Measurable Opportunities

 The most costly performance losses are often the ones you cannot see.

The RDE300i enables solar asset owners and O&M providers to uncover hidden underperformance, quantify losses, validate corrective actions, and make data-driven decisions.

As Spain’s solar fleet matures, continuous in-situ IV curve monitoring provides the insight needed to identify the true causes of energy losses, optimise O&M strategies, evaluate repowering opportunities, and maximise the long-term value of every asset. Understanding your modules’ real performance is the first step towards improving yield and profitability.