How to read my Energy History on the Nest Learning Thermostat
Nest Energy History on the Nest Learning Thermostat shows you how often, and for how long, your heating and cooling system was on. This can help you make smart choices about your schedule or your temperature preferences in order to save more energy.
Nest's Energy History shows how much energy the Nest Thermostat uses to heat or cool your home each day. You can find your Energy History by selecting ENERGY in the Nest Thermostat menu.
Since the Nest Thermostat needs time to learn about how you use energy, it will usually take at least a day for information to appear. After a week, the Energy History display becomes richer and more accurate.
When you first scroll through your Energy History on your Nest Learning Thermostat, you’ll see a circle representing your heating usage or your cooling usage. The size of the circle represents how much time during the day heating or cooling was running. If you have selected Range mode to have heat and cool at the same time, you will see two circles next to each other.
Press the ring to see more detail about your usage on a particular day, including if your heating and cooling were running more or less often compared to the previous day. If your energy consumption was significantly higher or lower than the average over the last week, your Nest Thermostat will show you the main contributor: your adjustments, Away or Auto-Away, or the weather.
Even if you aren't connected to Wi-Fi, your Nest Thermostat will assume that any dramatic changes in energy use that aren't accounted for by your adjustments or Away are caused by the weather. Sometimes, there are multiple reasons - the weather changed but you also made an adjustment. The Nest Learning Thermostat tells you the most significant one.
You can use the Energy History display to check that your choices are saving energy. Try turning your usual temperatures down a degree or two and see the next day what effect it has on your daily energy use. Over time, you can learn what choices help you save the most energy.
A more detailed view into your energy history is available on the Nest apps.