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How to Accurately Calculate the Performance Impact of Module Cleaning
No-one can look at a dirty module and say accurately how much production is being lost from soiling. In today's blog we look at how to..

Willow Energies
Jan 134 min read
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Solar PV Performance Analysis: 4. Action Plan & Tracking
Putting together an action plan is arguably the hardest part of the performance analysis, the action needs to be specific enough to avoid...

Willow Energies
Jan 32 min read
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Solar PV Performance Analysis: 3.5. Case Study
Today we'll take a concrete real-life solar PV plant and analyse it to assess the performance and corrective actions. This example is...

Willow Energies
Dec 3, 20244 min read
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Solar PV Performance Analysis: 3.4. Soiling
The best method to calculate the soiling losses is to perform a module level test on a sample of modules, where some modules are cleaned...

Willow Energies
Nov 8, 20242 min read
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Solar PV Performance Analysis: 3.3. Clipping
Clipping refers to the scenario where inverter output is maxed out and flatlines even though irradiance continues to increase. This causes..

Willow Energies
Oct 25, 20243 min read
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Solar PV Performance Analysis: 3.2 Shading
At some stage during the year almost all solar projects will have shading, either from nearby objects (e.g. buildings, antenna, trees),...

Willow Energies
Oct 18, 20243 min read
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Solar PV Performance Analysis: 3.1. Meter vs Sum of Inverters
In this example, there are no alerts indicating any issue with the DC field. But somehow the PR is 55% and causing a major headache. What...

Willow Energies
Oct 4, 20242 min read
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Solar PV Performance Analysis: Step by Step Guide
Your phone rings and it’s the CEO… “George… why is solar site XYZ 10% below expected PR (performance ratio) last month and 8% below...

Willow Energies
Aug 22, 20241 min read
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