Why it matters
myenergi harvi is best understood as a wireless CT telemetry bridge rather than a standalone meter. It exists to make zappi, eddi, and libbi installs easier when running hardwired current-transformer leads would be messy, expensive, or impractical.
Where it fits best
It makes the most sense in retrofit homes, detached garages, awkward cable routes, and mixed solar-plus-EV setups where clean installation matters almost as much as the monitoring itself. Because harvi can take up to three CT inputs, it can cover single-phase or three-phase sensing tasks inside the broader myenergi ecosystem.
What buyers should check
harvi is not a universal gateway for every monitoring stack. myenergi's own support content says it should be paired to the master myenergi device, uses a proprietary 868 / 915 MHz wireless link, and does not use Wi-Fi on its own. Buyers should also check signal distance, obstacles, and whether their project needs only wireless CT transport or a fuller open-protocol gateway.