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Thermostat Energy History

Your Google Nest thermostat’s Energy History records how often and for how long your system has run over the last 10 days. Energy History shows you how to make smart choices about your schedule and temperature preferences.

You can view your Energy History with the app or on your thermostat.

Home app

  1. Open the Home app Google Home app.
  2. Touch and hold your device's tile.
  3. Tap Energy dashboard Energy dashboard.
  4. Select Day, Week or Month.

The chart shows you how long your heating or cooling ran during the time period you’ve selected.

  • Orange bars represent heating while blue ones represent cooling. 
  • If your thermostat was in Heat•Cool mode or if you recently switched between modes, both orange and blue bars should appear.
  • Tap on one of the data bars to learn more details about your heating or cooling usage. 

Note: Since your thermostat needs time to learn about how you use energy, it usually takes at least a day after installation for Energy History information to appear.

Energy History details

At the bottom of the screen, you can learn more about Leafs earned, total Heat and Cool time, energy Rush hours, and compare use times between weeks or months. 

To review other time ranges, tap Back Back or Forward Forward. To return to the current time, press Quick jump Quick jump.

Energy History explained

The following are the icons found in your Energy History and what each one ​means:

Nest Thermostat energy history blue orange bars

The bars show when your system was heating or cooling.

  • Orange for heating
  • Blue for cooling

When you tap on one of the days on the chart, the number next to the bar is the total time your system was on during that time frame.

Leaf

The Leaf icon appears for the days when you saved energy and earned a Nest Leaf.

Save energy

After some time, your Energy Dashboard should display insights under your dashboard chart to help you save energy. For more ways to save, refer to the Explaining Nest thermostat savings article.

Insights

Cards notify you if weather changes affect your energy usage. You can check how long you saved energy when you enable Home & Away. You may also get notifications here if your adjustments in temperature caused a change in your average energy usage.

Change your Eco Temperatures

Set your thermostat’s Eco Temperatures

Note: Energy-efficient Eco Temperatures can help save energy when you set them lower (for heating) and higher (for cooling) than your comfort temperatures. If you set your heating Eco Temperature too high or your cooling Eco Temperature too low to make an impact on your energy savings, you may find an alert in your Home Report.

Nest app

  1. Open the Nest app Nest app and tap the Nest thermostat icon on the home screen.
  2. Tap History Thermostat history icon.
  3. Your 10-day summary should show. Tap on any day to learn more details about your heating system's energy use.

Thermostat

  • To review your Energy History, in the Nest thermostat's Quick View menu, select History Thermostat history icon.
  • If you’re using a Nest Thermostat E, your Energy History should be in the Settings Nest settings icon and then History.

Your Energy History at a glance

When you select History, a simple graphic that shows how long your heating or cooling ran for the day. 

  • An orange bar represents heating and a blue one represents cooling. 
  • If your thermostat was in Heat•Cool mode or you recently switched between modes, both orange and blue bars should appear.
  • Turn the thermostat’s ring to find the Energy History for other days. You can review as far back as 10 days ago.

Note: Since your thermostat needs time to learn about how you use energy, it usually takes at least a day after installation for Energy History information to appear.

Daily Energy History details

Press the thermostat’s ring to learn more details about a particular day. 

Turn the ring to scroll down and to find more information, like if your energy use was significantly higher or lower than the average over the last week. If it was, the thermostat should show you the main contributor, like your manual temperature changes, automatic switching to Eco Temperatures, your thermostat's temperature schedule, or the weather. 

To go back to the main Energy History screen, press the thermostat ring. To exit and return to the thermostat temperature screen, hold down the ring.

Energy History explained

energy history orange bar icon

energy history blue bar

The bars show when your system was heating or cooling.

  • Orange for heating
  • Blue for cooling

The number next to the bar is the total time your system was on during the day.

leaf icon

On the left of the screen, the Leaf icon appears for the days when you saved energy and earned a Nest Leaf.

energy history set icon

On the right, it shows main reason why your energy usage went up or down (compared to the average of the 7 previous days).

Energy history view

 For more information about your energy usage on a particular day, tap that day for an expanded view.

You can tap or click on multiple days to compare Energy History details and learn how your temperature choices affect your heating or cooling times.

Tip: Turn your phone to landscape for a better view.

energy history expanded image

energy history cool energy history heat

At the top are your target temperatures. These represent the temperatures in your schedule and any manual adjustments you made on your thermostat or with the Nest app.

Away icon image

If you manually set your thermostat to Eco Temperatures, or if your thermostat automatically switched to Eco Temperatures when your home was empty, this icon should appear at the beginning of the time your thermostat went into Eco Temperatures.

Nest app energy history more details

Tap on any icon to find more information.

If you’re on a computer, just hover your mouse over any icon to find more information.

Nest app energy history heat

Each orange bar represents the time that your heating was on, while blue bars show when your cooling was on.

Note: If there are 2 shades of orange or blue, it means you have a 2-stage system. The lighter shade is the 1st stage, and the darker shade is the 2nd stage. If there are 3 shades, it means you have a 3-stage system. The darkest shade shows the 3rd stage.

energy history timeline start

At the beginning of each day, you can check what the target temperature in your home was at midnight the previous day.

Download button

When your Nest thermostat is updated with a new software, an icon should appear in the Energy History on the day that it was updated. To check the time of the update, tap or click the icon. 

Note: Nest app version 4.1 or later is required.

Off button

If you turn your thermostat off, this icon should appear.

Energy History can help save energy

Here are a couple of examples of how to use Energy History to help you save energy when you use heating in cool weather. For more ways to save, refer to Explaining Nest thermostat savings article.

Lower your night temperature

Try to turn down the temperature by a couple of degrees during the night. You might not notice any difference since you're asleep.

Nest app energy history away example

On this day, your thermostat was set at 68°F from midnight to 7 AM. Each orange bar indicates when the heat came on.

Nest app energy history away example

On the next day when your thermostat was set at 64°F for the same time period, the heat came on less frequently to help save energy.

Change your Eco Temperatures

Set your thermostat’s Eco Temperatures

Note: Energy-efficient Eco Temperatures can help save energy when you set it lower (for heating) and higher (for cooling) than your comfort temperatures. If you set your heating Eco Temperature too high or your cooling Eco Temperature too low to make an impact on your energy savings, an alert may appear in your Home Report.

Nest app energy history away example

On this day, the thermostat automatically switched to Eco Temperatures (set to 60°F) shortly after 8 AM.

Nest app energy history away example

The next day, after you change the Eco Temperature heating setting to 53°F, notice how the heat didn’t come on at all during the same period. A lower heating setting, or higher cooling setting for Eco Temperatures can help reduce your energy use.

 
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