Alliant Energy EPRI: Electric Power Research Institute
Madison Solar Demonstration Project
Madison Solar Demonstration Project

Site Settings

PV Module Temperature
Outdoor Air Temperature
Wind Speed
Cumulative Precipitation
Precipitation Rate
Feels Like Temperature
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About this website

This website was designed and developed by EPRI in collaboration with Alliant Energy, EPRI's Integration of Distributed Energy Resources and Solar programs, and EPRI's Power Delivery and Generation sectors.

Help: information about this page...

Component View

After reading the overview, try interacting with the comparison chart(s) to learn more about the data's characteristics and trends.

Panels

This page contains several panels: Performance Snapshot, Overview, etc. Tap or click the "?" button in the upper right corner of a panel to see more information about its content.

Apparent Temperature (Feels Like)

Performance Snapshot
Performance Snapshot

This panel may show a sampled measurement (e.g., power) and/or a cumulative measurement (e.g., energy generated).

When the sampled measurement is available, a gauge and trend chart will appear.

When the cumulative measurement is available, its value will be shown over the date range indicated.

Sampled Value (Gauge and Chart)

Feels like (apparent) temperature represents wind chill or heat index; depends on air temperature, relative humidity, and wind speed

Feels Like Temperature
Feels Like Temperature (°F)
Overview

Apparent temperature provides the "feels like" temperature. These values can be higher or lower than air temperatures and provide further insight into the conditions under which the technologies are operating.

Measurement Source

Apparent temperature is calculated based on the measured air temperature and measured humidity at the site.

Time Series Profile
Time Series Profile

Chart (or charts) shows trends for a specific component. Each data point represents an aggregated value for the time interval indicated (e.g., 15-minute average).

Chart Navigation

Tap or click on the chart titles (if more than one shown) to switch the view between charts. The title of the displayed chart is highlighted in orange.

Zoom and Pan

To zoom in on and get a closer view of a plot area in a chart:

  • On a touchscreen: Use two fingers to spread apart (expand) the plot area, then use one finger to slide the plot area left and right.
  • Using a mouse: Click and drag to select a section of the plot area, then hold down the Shift key while dragging left and right.
  • Tap or click on the "Reset zoom" button to return the chart to its original size.

Toggle Legend Items

Tap or click on a legend item (if more than one shown) to hide or show its data in the plot area.

Measurements Plotted

Chart (or charts) includes one or more of the following measurements (indicated in the legend or title):

  • Feels like (apparent) temperature represents wind chill or heat index; depends on air temperature, relative humidity, and wind speed
  • Outdoor ambient air temperature

Preset Date Ranges


Custom Date Range

to
Data are available beginning 4/1/2016. Tip: clear the end date to view the most recent data available.

Download Chart Data

Save chart data as a comma-separated values (CSV) file:
Note: timestamps (first column in the CSV file) are adjusted to your computer's timezone and represent the beginning of each interval.
Warning: downloading data is intended for desktop and laptop computers. This feature may not work for smartphones or tablets.
TEMPERATURE
Daily Performance
Daily Performance

Chart (or charts) shows trends for a specific component. Each data point represents an aggregated value for the date indicated.

Chart Navigation

Tap or click on the chart titles (if more than one shown) to switch the view between charts. The title of the displayed chart is highlighted in orange.

Zoom and Pan

To zoom in on and get a closer view of a plot area in a chart:

  • On a touchscreen: Use two fingers to spread apart (expand) the plot area, then use one finger to slide the plot area left and right.
  • Using a mouse: Click and drag to select a section of the plot area, then hold down the Shift key while dragging left and right.
  • Tap or click on the "Reset zoom" button to return the chart to its original size.

Toggle Legend Items

Tap or click on a legend item (if more than one shown) to hide or show its data in the plot area.

Measurements Plotted

Chart (or charts) includes one or more of the following measurements (indicated in the legend or title):

  • Feels like (apparent) temperature represents wind chill or heat index; depends on air temperature, relative humidity, and wind speed
  • Outdoor ambient air temperature

Preset Date Ranges


Custom Date Range

to
Data are available beginning 4/1/2016. Tip: clear the end date to view the most recent data available.

Download Chart Data

Save chart data as a comma-separated values (CSV) file:
Warning: downloading data is intended for desktop and laptop computers. This feature may not work for smartphones or tablets.
TEMPERATURE
Monthly Performance
Monthly Performance

Chart (or charts) shows trends for a specific component. Each data point represents an aggregated value for the month indicated.

Chart Navigation

Tap or click on the chart titles (if more than one shown) to switch the view between charts. The title of the displayed chart is highlighted in orange.

Zoom and Pan

To zoom in on and get a closer view of a plot area in a chart:

  • On a touchscreen: Use two fingers to spread apart (expand) the plot area, then use one finger to slide the plot area left and right.
  • Using a mouse: Click and drag to select a section of the plot area, then hold down the Shift key while dragging left and right.
  • Tap or click on the "Reset zoom" button to return the chart to its original size.

Toggle Legend Items

Tap or click on a legend item (if more than one shown) to hide or show its data in the plot area.

Measurements Plotted

Chart (or charts) includes one or more of the following measurements (indicated in the legend or title):

  • Feels like (apparent) temperature represents wind chill or heat index; depends on air temperature, relative humidity, and wind speed
  • Outdoor ambient air temperature

Preset Date Ranges


Custom Date Range

to
Data are available beginning 4/1/2016. Tip: clear the end date to view the most recent data available.

Download Chart Data

Save chart data as a comma-separated values (CSV) file:
Warning: downloading data is intended for desktop and laptop computers. This feature may not work for smartphones or tablets.
TEMPERATURE
Cumulative Performance
Cumulative Performance

Chart (or charts) shows aggregated values for the date range indicated.

Chart Navigation

Tap or click on the chart titles (if more than one shown) to switch the view between charts. The title of the displayed chart is highlighted in orange.

Toggle Legend Items

Tap or click on a legend item (if more than one shown) to hide or show its data in the plot area.

Components Defined

These components appear in at least one chart (indicated in the legend):

    Measurements Plotted

    Chart (or charts) includes one or more of the following measurements (indicated in the legend or title):

      Image for Apparent Temperature (Feels Like)