Plug-in solar kits and microinverters

Microinverters and kits that turn one or two panels into power for a household outlet.

Read this first. A plug-in kit feeds the circuit it is plugged into. Check your state law and the circuit limit before you plug in, and pick equipment that states a plug-in safety standard such as UL 3700.

Related guides: Plug-in solar laws: where it is legal, and from when, Pennsylvania plug-in solar: where HB 1971 stands, Is plug-in solar safe? What protects you, and what does not

How to buy
Brand
2 products

Products

Hoymiles (model family)

Hoymiles HiFlow Pro

Plug-in microinverter

AC output
360 W to 500 W
UL 3700
Listed by Hoymiles
Not yet available

APsystems

APsystems EZ1-LV

Plug-in microinverter

AC output
900 W
UL 3700
CSA certified (APsystems)
Not yet available

Parts we have not picked a model for yet

Rather than list unnamed products, here is what to check when you shop for these.

Solar panel for a plug-in kit

The panel decides how much power the kit makes, and it has to match the microinverter it plugs into.

Check

  • Check the panel's wattage and voltage against the microinverter's input range (APsystems lists 26 to 60 V and 315 W to 660 W per input for the EZ1-LV).
  • Keep the total within your state's cap and your circuit's headroom: 360 W on a shared 15 A circuit by Bright Saver's math.
  • Match the connectors (usually MC4) or buy the adapter the maker specifies.
  • Measure the space and the weight your railing or mount can carry.
  • Point it south and away from shade where you can; output falls fast in shade.

Avoid

  • Panels whose voltage exceeds the inverter's input range.
  • Mounting that drills into a rental without the landlord's written OK.

Outdoor outlet for a plug-in kit

Plug-in kits connect where you plug them in. Some makers call for a GFCI outlet, and an outdoor outlet needs a weatherproof cover.

Check

  • Use the outlet type the kit's maker specifies, GFCI where called for.
  • Use a weather-resistant outlet with an in-use (bubble) cover outdoors.
  • Know what else is on that circuit; the kit adds power to the same wiring.
  • Plug the kit straight into the outlet: no power strip or extension cord unless the maker allows it.

Avoid

  • Sharing the circuit with large loads such as space heaters.
  • Adding or rewiring an outlet yourself if you are not qualified: hire a licensed electrician.