Thermostat Energy History

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

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

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

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

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