**From:** Katrine Moller <katrine.moller@vindkraft-analytics.dk> **Subject:** Performance data infrastructure project Hi, I run performance analytics at VindKraft Analytics -- we monitor 14 onshore wind farms, about 340 turbines, across Denmark and northern Germany. Every turbine sends SCADA data every 10 minutes. We have years of this data. The problem is that we can't use it properly because turbines change over time -- gearbox replacements, blade upgrades, software updates -- and our data doesn't track what configuration a turbine had when it generated each data point. When a farm owner asks "did that 2 million DKK blade upgrade actually improve power output?" I should be able to answer that definitively. Right now I can't, because I'm comparing post-upgrade data to a baseline that includes a mix of configurations. The second problem is metrics. We report "availability" and "capacity factor" to farm owners, but they don't all agree on what those terms mean. One client counts scheduled maintenance as downtime, another doesn't. We need standardized definitions. I have: - SCADA data via API from each farm's monitoring system (10-minute intervals) - A spreadsheet tracking major component changes (manually maintained, not always up to date) - Maintenance logs that include technician names (these need to be handled with some care) I need a proper data infrastructure that tracks turbine configurations over time, links every performance reading to the right configuration, and standardizes our metric calculations. Happy to walk you through the SCADA data format and our current process. Best, Katrine **Suggested message buttons:** 1. "Hi Katrine, I've read through your email. Before I start planning, I have a few questions about the data sources and how your farms are set up." 2. "Thanks for the overview. I'd like to start by looking at the SCADA data and the component change log -- can you walk me through the formats?"