January 6, 2026 | by Leon Hailstones | Engineering + Technology, Solar Resource Measurement,
In our previous blog post, we explored how NRG’s next-generation LOGR | Met Data Logger supports bankable wind and solar resource assessment campaigns. In this installment, we dive into the next phase in a solar project’s lifecycle – operation – and unpack how LOGR | Met delivers accurate, reliable post-construction measurements that maximize plant production, inform O&M decisions, and set projects up for lasting success.
Why Bankability Doesn’t End at Operation
Once a solar project becomes operational, the focus of measurement campaigns shifts from “how much energy could we produce?” to “how much are we producing and why?”. Data precision, completeness, and accessibility remain just as critical post-construction as they were during development.
Lenders, investors, and operators rely on this data to verify energy yield, calculate availability, and support O&M decisions. Incomplete or inconsistent data can erode stakeholder confidence and with it, a project’s financial value.
That is why NRG designed LOGR | Met to serve as the most trustworthy foundation for post-construction measurement campaigns, providing the high-quality data needed to drive optimal performance and project bankability for the long-term.
Strengthening the Data Quality Chain
High-quality data is the result of a strong data quality chain designed to preserve accuracy, integrity, and traceability from fielded sensors to the SCADA platform for performance monitoring. LOGR | Met bolsters the strength of this chain:
- Capturing the right data, the right way: LOGR | Met supports IEC 61724-1-compliant minute-level logging to measure plane-of-array irradiance, back-of-module temperature, ambient conditions, and wind. High-resolution inputs ensure that signals remain accurate and precise, even in complex solar station configurations.
- Maintaining continuous data coverage: Reliable uptime is essential for solar plant performance optimization and reporting. LOGR | Met is designed to support continuous data capture through flexible power options, including AC, solar, and battery, and robust local data storage that safeguards measurements during power or communication interruptions. Redundant data delivery pathways, including Modbus RTU, Modbus TCP, and SFTP, help ensure > 90% data completeness for consistent data availability across SCADA and downstream systems.
- Protecting data integrity: Bankable data must be verifiable and secure. LOGR | Met backs up local storage (on-device or on a SCADA server) with automatic uploads to NRG Cloud, where data can be stored for up to three years. The user interface is password protected to avoid on-site tampering and safeguard critical information. NRG continues to develop solutions that ensure your data is bankable, protected, and readily accessible – on device, across the SCADA network, and on NRG Cloud.
- Making data easy to verify and post-process: LOGR | Met data files are fully self-describing, embedding site details, sensor metadata, calibration coefficients, and configuration settings directly within each file. Built on metadata concepts from the IEA Task 43 data model, this structure enables independent engineers (IEs) to validate datasets without searching for supplementary documentation. For those who want to verify calibration information, NRG can also provide digital calibration reports to cross-check against the embedded data.
Putting Better Data to Work
Once a project is operational, the data captured by LOGR | Met becomes a critical asset. Minute-by-minute logging enables precise performance ratio calculations, helping teams track production trends and pinpoint deviations before they escalate into lost revenue.
For owners and operators preparing for audits or independent engineer reviews, LOGR | Met simplifies the process. Because its data is standards-compliant and self-describing, reviewers can verify measurements quickly and confidently, reducing requests for clarification or custom exports.
Finally, LOGR | Met protects the long-term value of every project through open, human-readable archives, ensuring that critical data remains usable well into the future. Whether used in refinancing, M&A due diligence, or repowering assessments, these verified datasets ensure that today’s measurements continue to protect a project’s long-term value.
To learn more about LOGR | Met, visit the product page and subscribe to our email list HERE to stay informed about the latest updates and innovations.
