What is OWview?

OWview turns the Excel report written by a UL OpenWind energy capture run into an interactive dashboard: project totals and the loss cascade, per-site and per-turbine yields, the layout map, power and thrust curves, and the met-mast wind climates used in the run. Load the .xlsx to view it.

Your data never leaves your machine

The file is parsed and plotted entirely in the browser. Nothing is uploaded and no server receives the file. The layout map plots turbines in the report's own projected coordinates, so no map-tile requests are made that could reveal the site location. OWview is open source on GitHub.

Getting the report out of OpenWind

Run an energy capture in OpenWind and save the report it writes as an Excel workbook. Drop that file anywhere on the OWview page, or use Load file. If the workbook contains several sheets (one per scenario or layout), a scenario picker appears in the navigation bar.

What OWview reads

• Report header: OpenWind version, projection and EPSG code, time zone, and report date.
• Project totals: ideal, theoretical gross, gross, and net energy, plus capacity factor and topographic and array efficiency. The energy cascade chart is derived from these values; the wake-loss step is reconstructed from the per-turbine Array Yield column.
• Settings & losses: the energy capture parameters, the global loss list, and the wake and induction model settings. Values of 0 or Off are dimmed so active settings are easier to find.
• Sites: the per-site summary blocks, plus any enabled external site layers (neighbouring farms) included in the run.
• Turbines: the full per-turbine table, including coordinates, yields, efficiencies, turbulence intensity, and per-turbine losses. The on-screen table shows a selected set of columns; the CSV export contains every column OpenWind wrote.
• Turbine types: specifications and the power and thrust curves. Where a curve is tabulated for several air densities, the column closest to 1.225 kg/m³ is plotted.
• Met masts: the frequency (TAB-style) tables shown as a wind rose and joint-probability heatmap, turbulence intensity versus wind speed, and the per-sector Weibull fits.

The parser is tolerant of malformed input: unrecognised blocks are skipped, and OpenWind's placeholder values (-999, N/A, and overflow values such as 3.3e+36) are treated as blanks rather than plotted.

Exports

• Turbines CSV: every column of the per-turbine table, for all sites.
• Full JSON: the complete parsed model (totals, settings, sites, turbines, curves, and mast tables), suitable for scripting.
• Layout PNG: the turbine map on a white background, for use in reports or slides.

Sibling tool

For WAsP observed wind climates, windtab provides the same analysis for .tab files: wind rose, Weibull fits, and joint-probability heatmap, in the browser.