Power Outage Sensor

Did you see this thread ?

The device is pretty cheap - thin I will order one too.
https://www.amazon.com/Aeon-Labs-AEDSB09104ZWUS-Aeotec-Monitor/dp/B00DIBSKFU/ref=sr_1_2?ie=UTF8&qid=1515615765&sr=8-2&keywords=aeon+labs+home+energy+meter