I purchased my Sense in early January 2017 with high hopes. It's an easy install for anyone with a little experience behind their circuit breaker door.
It is a nice looking iPhone app. I hooked it up and waited to see what was using what. It's almost the end of August, and I'm still waiting.
Yes, I've been through the mill with what passes for their tech support, which is basically re-initiating the database on their side to accommodate their "new" code. It can easily find a garage door opener, a microwave, and even your fridge, but that's about where it stops. It finds many "components" of larger or more complex units (like a heat pump), but it's essentially useless information that is not summarized or presented in any way you can make "sense" of. You can track the impact of devices turning on or off, but you can't assign that "signature" to a device name. If you could, it might be possible to create useful information.
Right now I'm stuck with essentially a $300 app on my phone that I can get a few minor bits of info from, but it's impossible to use it or analyze it to save money by tracking down energy hogs.
Unfortunately, Sense makes no sense to buy. Great idea, great marketing, but no execution. If you want to spend $300 to know when your fridge light comes on, by all means, go for it.
I'm fed up with it and their excuses.
Bottom Line: No, I would not recommend this to a friend