The plan's really a no brainer. The V3 plan gives you all the benefits of having a system and backup battery without the responsibility of owning the system (upkeep, monitoring, maintenance).
V3 covers the cost of designing the system, installing, and all the steps to get your system operable. After that, all you pay for is the electricity the system makes. They even take care of the maintenance so you pay nothing should there be any issues with your system or backup battery.
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