It’s not worth the risk.

    two people familiar with the matter said...rogue communication devices
    not listed in product documents have been found in some Chinese solar power
    inverters by U.S experts who strip down equipment hooked up to grids
    to check for security issues, the two people said.

    The two people declined to name the Chinese manufacturers of the inverters
    and batteries with extra communication devices, nor say how many they had
    found in total.

    Both declined to be named because they did not have permission
    to speak to the media.