The only drawback, really, is that sometimes you _want_ the charge in the battery for yourself. If you take out a loan with a ConnectedSolutions clause (e.g., a MassSave loan), you are obligated to make your home battery available as a VPP under the terms of the loan.
Fortunately, one of the valid reasons for opting out from a "VPP event" (which is what my battery mfgr's app calls it) is a coming storm. In fact, in my system a "storm hedge" (where the battery tops itself up before a storm) trumps a VPP event, so for all practical purposes, there is little inconvenience. So there aren't really any drawbacks. And when you are done paying your loan you can either stay enrolled in ConnectedSolutions or not.
I say go for it. A 0% loan is great, and it was the deciding factor for us to buy the battery. Honestly, I wish I had bought a bigger battery! 15kWh is good for an evening, but not quite enough if the following day is rainy.
Fortunately, one of the valid reasons for opting out from a "VPP event" (which is what my battery mfgr's app calls it) is a coming storm. In fact, in my system a "storm hedge" (where the battery tops itself up before a storm) trumps a VPP event, so for all practical purposes, there is little inconvenience. So there aren't really any drawbacks. And when you are done paying your loan you can either stay enrolled in ConnectedSolutions or not.
I say go for it. A 0% loan is great, and it was the deciding factor for us to buy the battery. Honestly, I wish I had bought a bigger battery! 15kWh is good for an evening, but not quite enough if the following day is rainy.