Purple Soil Technology Ventures
WindCheck
ERA5 · Open-Meteo · Hourly data
📍 Location name
🗺 Coordinates paste to auto-fill name
📅 Current period
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🔀 Comparison
ⓘ Data accuracy & disclaimer ▾
This analysis is calculated strictly using ERA5 reanalysis data fetched from Open-Meteo (open-source, free tier). ERA5 represents a ~9 km grid cell average and may not capture localised wind effects such as terrain channelling, coastal acceleration, or urban obstruction.

Results are intended for initial feasibility planning only — not a substitute for on-site anemometer measurement. Accuracy may vary depending on terrain, elevation, and proximity to coast or urban structures.

Purple Soil Technology Ventures and OneRoof Technologies LLP accept no liability for investment or planning decisions made solely on the basis of this tool's output.
Product by OneRoof Technologies LLP
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Verifying location
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Fetching Period 1 data
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Fetching Period 2 data
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Air density correction (ρ)
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Weibull distribution (k & λ)
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Wind Power Density & shear
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Turbine outputs & capacity factor
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P50 / P90 energy estimates
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Product by OneRoof Technologies LLP
WindCheck — Wind Turbine Feasibility

Rooftop wind analysis —
Location

Hourly ERA5 wind data analysis for rooftop micro-turbine feasibility on a residential or commercial building.

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Wind resource summary
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Turbine match selector

Which turbine suits this wind profile?

Select a model to see estimated annual output at this exact location.

Model
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Productive hrs/yr
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Est. annual energy
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Capacity factor
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% of rated power
P50 / P90
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Payback est.
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at ₹8/kWh
03
Data explorer
Daily wind speed
Amber dashed = 2.0 m/s VAWT cut-in reference
Mean
Max
Gust
Average wind by hour of day
Mean wind speed at each hour — reveals the daily sea-breeze pattern
Weibull distribution fit
Industry-standard wind speed probability model — k=shape, λ=scale
Observed frequency
Weibull fit
Wind speed distribution
Hours per 0.5 m/s bin — teal = productive, dim = below cut-in
Monthly wind & Wind Power Density
Mean wind (bars) and WPD in W/m² (line) per month
Mean wind (m/s)
WPD (W/m²)
Wind direction rose
Frequency of wind from each compass direction
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Recommendations
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Wind resource summary
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Turbine match selector

Which turbine suits this wind profile?

Full previous year data including all seasons.

Model
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Productive hrs/yr
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Est. annual energy
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Capacity factor
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% of rated power
P50 / P90
—
—
Payback est.
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at ₹8/kWh
03
Data explorer
Daily wind speed
Full previous year — includes all seasonal variation
Mean
Max
Gust
Average wind by hour of day
Full-year diurnal pattern
Weibull distribution fit
Full-year Weibull k & λ parameters
Observed
Weibull fit
Wind speed distribution
Full-year distribution
Monthly wind & Wind Power Density
Full 12-month cycle
Mean wind (m/s)
WPD (W/m²)
Wind direction rose
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Recommendations
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Year overview
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Monthly comparison
Monthly mean wind — both years
Overlaid monthly averages to spot seasonal differences
Current year (Y1)
Previous year (Y2)
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Daily overlay — shared months
Daily mean wind — Y1 vs Y2
Same calendar days, both years side by side
Y1
Y2
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Key takeaways
Report
📄
Word Report (.doc)
Tables, stats & findings with charts as images where possible — add your branding, edit freely, export to PDF.
Editable in Word · Brand-ready
🌐
HTML Report
Fully interactive dark-theme report with all charts, filters and turbine selector — opens in any browser, share as-is.
Interactive · Self-contained
Analysis complete in — · —
Product by OneRoof Technologies LLP