We analyzed 4,669 California-based solar assets, totaling ~125MW, to determine the impact of average soiling losses. Using historical data from these Omnidian-managed sites and external weather data, these projections revealed the typical energy output losses due to soiling per month in the state of California. (Image 1)

In some regions, soiling reduced the energy output of assets by nearly 30%. In August and September 2024, in particular, large areas of California regularly experienced soiling losses exceeding 15% of energy output, leading to significant financial losses for solar assets in these areas. (Image 2)

Case Study Stats

Asset Count: 4,669 systems
Total Size: ~125 MW

Soiling Detection and Remediation

Omnidian’s proprietary technology detects when solar assets are underperforming. 

If soiling is the root cause, our team can coordinate module washing through our service network.

For assets in areas prone to seasonal soiling due to wildfire smoke, agricultural dust, or pollen, annual or semi-annual module washing is recommended.