DASI — Dust Accumulation & Soiling Index
AI-powered soiling analytics that tells you exactly how fast your modules are losing generation to dust — and when to clean for maximum ROI.
2.86DASI/day
Typical Urban Soiling Rate
4–8%
Avg. Generation Loss at 7 Days
12–22%
MCE Recovery After Cleaning
7 States
DASI Data Coverage
From Guesswork to Data-Driven Cleaning
DASI (Dust Accumulation & Soiling Index) is the analytics layer inside Helios™ that tracks how quickly solar modules accumulate dust and quantifies the generation loss caused by soiling. By combining environmental data, cleaning history and real-time generation readings, DASI gives asset owners and O&M managers a precise, location-specific soiling profile — so cleaning decisions are driven by data, not habit.
- Daily soiling rate calculated per plant location
- Generation loss attributed to dust accumulation
- Cleaning frequency recommendations based on soiling rate
- Trend analysis across weeks, months and seasons
- Integrated with MCE reports for full service intelligence
- Accessible through the Helios™ customer dashboard
Turn monthly soiling patterns into a smarter cleaning cycle
This customer example connects the cleaning-efficiency report with the month-wise DASI trend. Helios™ shows how quickly soiling builds between visits, so cleaning schedules can be tuned to protect generation and avoid unnecessary service calls.
See the trend
Track month-to-month DASI movement instead of relying on a fixed calendar interval.
Validate each visit
Use MCE evidence to understand the soiling removed and generation recovered after cleaning.
Tune the cycle
Set a cleaning cadence that responds to actual asset conditions for better long-term care.
Continuous Soiling Intelligence
Environmental Data Collection
Helios™ continuously ingests irradiance, temperature, humidity and wind data for each plant location — the environmental inputs that drive dust accumulation rates.
Generation Baseline Tracking
Post-clean generation output is recorded as the clean baseline. As days pass, Helios™ tracks the deviation from this baseline to measure soiling-driven generation loss.
DASI Score Calculation
The AI engine calculates a daily soiling index — DASI/day — that quantifies how fast the plant is losing generation to dust under current environmental conditions.
Cleaning Trigger Recommendation
When the cumulative generation loss crosses a threshold that makes cleaning economically optimal, DASI flags the plant for a service visit — before the loss compounds further.
Post-Clean Reset & Trend Update
After each cleaning visit, the MCE score is fed back into DASI to update the soiling model — making recommendations progressively more accurate over time.
Who Benefits from DASI
Utility & Large-Scale IPPs
Optimise cleaning schedules across multi-MW portfolios. DASI identifies which plants need cleaning now versus which can wait — reducing unnecessary service costs.
Commercial & Industrial Rooftops
Understand the true generation impact of dust on your rooftop system and justify cleaning investments with data rather than estimates.
O&M Service Providers
Use DASI data to schedule field teams efficiently, prioritise high-loss plants and demonstrate cleaning ROI to clients with MCE-backed evidence.
EPC Contractors
Include DASI-backed cleaning schedules in your O&M handover packages — giving clients a data-driven maintenance plan from day one.
DASI is Built Into Every PlasmaBerry Service
DASI is not a standalone product — it is the analytics intelligence layer inside Helios™, activated automatically for every PlasmaBerry service engagement. From your first cleaning visit, DASI begins building your plant's soiling profile. No separate setup, no additional cost.
Learn About Helios™Get DASI Analytics for Your Plant
Every PlasmaBerry AMC and service engagement includes DASI analytics through Helios™. Request an assessment to get started.