Greenbyte Documentation

Loss Analysis waterfall

This chart helps asset managers find the energy losses that could have been affected by O&M. It also helps you to find the sites and devices that contributed the most to energy losses during the selected period.

The chart works for both wind and solar assets and compares the actual energy of a portfolio, site, or device, to its theoretical energy – how much energy it could have produced if it were running optimally in perfect conditions.

Tip

This widget works best on dashboards with one column.

loss_analysis_waterfall.jpg

The chart looks at the gap between energy theoretical and energy actual. You can read more about those signals here:

For solar: See Energy Theoretical (Inverter). Energy Actual is calculated using Energy With Fallback.

For wind: See Energy Theoretical. Energy Actual is the energy export from the turbine (a pure signal).

The losses are divided into four categories, which are listed below with the signals used to calculate them.

Category

Solar Signal

Wind Signal

Performance

Lost production to Performance (Inverter)

Lost Production to Performance (Turbine)

Curtailment

Lost Production to Curtailment (Total)

Lost Production to Curtailment

Downtime

Lost Production to Downtime (Inverter)

Lost Production to Downtime (Turbine)

Residual

Any remaining difference between the theoretical and actual energy, which can't be attributed to the other categories.

For each category, you can see both the energy figure and the percentage of Energy Theoretical that it represents.

Tip

The Budget Deviation Waterfall (BDW) is designed to be a companion widget to the Loss Analysis Waterfall (LAW) - so we recommend displaying them both together on the same dashboard.

This allows you to compare and contrast losses in a meaningful way. For example: “Aaargh - I have big losses on Performance! But when I look at the BDW I see that the Performance Ratio Deviation is pretty small, so actually most of these losses were already budgeted for. Hooray!”

Drill down to find the WHY behind your losses

On the right side of the chart you can see the 5 top offenders on the next asset level.

  • For the portfolio you'll see the sites losing the most energy and the size of their losses.

  • For a site you see the devices losing the most energy and the size of their losses.

The top offenders list normally shows the top offenders for all categories, but you can click a category to see the top offenders for only that category.

  • Click the close button in the category losses popup to show the total losses again.

  • To drill down to the next asset level, click on one of the top offenders. The widget will switch to show the chart for that asset instead. Click on a site name in a portfolio chart to see the chart for the selected site.

  • Click a device in a site chart to see the chart for that device.

  • The breadcrumbs at the top, e g Portfolio > Site 1 > Device 3, show which asset is presented in the chart and enables you to navigate back to higher levels.

Tip

This widget relies on a number of signals. In order to ensure that they all work, the following settings need to be made:

For Inverters:

  • Go to Administrate > Devices and click the inverter's row or select Edit from the three-dot menu to edit the device.

  • Click the Devices tab and add a Potential Power Order.

  • Click the Metadata tab and add the Performance Irradiance Cut-in.

  • Add the Availability Irradiance Cut-in on the Metadata tab.

For turbines:

  • Go to Administrate > Wind Turbines and click the turbine's row or select Edit from the three-dot menu to edit the turbine.

  • On the Wind turbine tab, add a Potential Power Order.

  • Click the Power C. tab and add a default power curve.

  • Go to Administrate > Wind Farm and click the row of the turbine's site or click Edit.

  • On the Wind Farm tab, add a curtailment scheme in the Curtailment section.

Type

Chart

Context

Analyze, Reports

Scope

Portfolio, Wind Farm/Site, Wind Turbine/Inverter