It happened to me several times. Talking to a project owner. Some lousy products are on the BOM. I advise the owner to re-consider replacing some of the components. Reaction? Nah, I don´t want to add more money into the project. If something goes wrong, I am covered with insurance. My question is obvious: Are the insurance companies aware of the risk which are they taking? And what they do to minimize it? Does anyone here have any practical experience with insurance companies? And how do the insurance companies react for the exponentially growing risk?

When you’re chasing low PR or unstable output, what’s the first thing you check before diving into data and controls? We recently saw a big improvement just by fixing some very basic issues (thermal management and grounding in a hot climate), which reminded me how often fundamentals get missed. Curious how others here approach early-stage troubleshooting in the field.

The way from 56 towards 80,5% PR in only 3-5 working days ...... Here a design flaw with inverters kept in a Container 55degrees C and a not functioning Earthing System in Hot Climate - solved UAE

Is there a simple way to weather adjust data (roughly) to be used for 1,000s of Residential assets clustered in a very small Region? We have monthly performance reviews and the same question comes up? Why was last year batter than this year? Etc… and the answer to all these questions is likely a column with some basic weather adjustment/month. Wanted to get thoughts as this would change my life! Cheers!

Hello Guys I’m currently dealing with an issue where one of our solar parks is causing continuous power fluctuations to the grid, which has led the grid operator to shut down the plant when this occurs. The plant has a total installed capacity of 14 MW. At the time of commissioning, the grid infrastructure was not fully ready, so the plant was limited to 50% capacity. This limitation was applied directly at inverter level, where all Sungrow SG250HX inverters were capped at 50% output. In addition, the plant is controlled by a PPC (Power Plant Controller), which performs curtailment based on market signals (e.g., negative pricing). After approximately one year, maintenance was completed on the grid export infrastructure, and the plant was allowed to operate at 100% capacity. Following this change, we started to observe serious instability whenever the plant was actively curtailed by the PPC. We noticed that the inverters were generating large amounts of reactive power, and the cause was initially unclear. This issue persisted for several months. In summary, the inverters receive curtailment and control signals from the PPC, and we strongly suspect that the PPC control parameters (active and reactive power setpoints, control gains, ramps, or droop settings) were tuned when the plant was operating at 50% and were never updated after the plant increased to full capacity. This appears to be causing unstable inverter behavior and oscillations seen by the grid. A key observation is that when we disable the PPC/loggers and turn off both active and reactive power control, the fluctuations stop immediately. This strongly suggests the issue is related to PPC control logic and configuration rather than the inverters or the grid itself. I’d appreciate your thoughts on this.