[RE-wrenches] Strange Question: 1-Panel System

[William Miller]

Glenn:

I asked Enphase if I could run IQ7+ inverters without a gateway and got
conflicting answers. I tried it and the result I got was the inverters
would run briefly without a gateway and then shut down. Apparently we
needed the gateway to load in a grid profile to the inverters.

Once the client bought the gateway and we loaded the profile there was no
reason to remove the gateway. Therefore I don’t know if you need the
gateway to remain in place.

Hope this helps.

William Miller
Miller Solar.com
805-438-5600
www.millersolar.com


On Sat, Oct 25, 2025 at 9:28 AM Glenn via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Have you seen the ads for the new plug in the wall PV panels? Apparently
> they are common in Europe and are working their way here.
>
> Do the new generation of microinverters require a gateway now? I have a
> couple of panels running off m250s for years with no direct monitoring. I
> do have a Sense monitor on my house and can see it's effect on my usage.
>
> If you can use a current micro without the gateway, a company called
> Shelly sells inexpensive DIN rail power monitors with wifi and BT connection
>
> -Glenn
>
> On Oct 25, 2025 12:13, Jason Szumlanski via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> Okay, this is going to be a strange question. I'm looking for the lowest
> cost way to install a single solar panel and inverter that is grid tied. i
> need it to be grid-tied and it needs to be monitored in some way. I'm
> thinking a microinverter is the way to go, but I don't want to buy a $600
> Enphase Gateway to make it happen.
>
> Since someone is probably going to ask, I will go ahead and explain. A
> local utility company has a top marginal residential energy use rate of
> about 15 cents per kWh. The first and second 500 kWh monthly are billed at
> a slightly lower rate. However, when you enter into a netmetering
> agreement, the switch you to a "blended" rate, which is currently 9 cents
> per kWh, regardless of what you net energy use ends up being.
>
> You might see where I'm going here. Installing a single netmetered panel
> reduces a customer's marginal rate by 6 cents a kWh. This could be a
> substantial savings, particularly for heavy energy users.
>
> I have people interested, for obvious reasons.
> --
>
> Jason Szumlanski
> Florida Solar Design Group
>
>
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