Power upgrade for off-grid shack & boathouse

[staylucky]

Hello,

Over the last few weeks I've learned a lot reading this forum. There are a lot of knowledgeable people here who are civil and very helpful. Thank you.

I'm looking to upgrade the power system of an off-grid shack (currently mostly propane and wood burning stove) and boathouse (currently no power). It's on the New England coast and used 9+ months a year, but not full time. There is a 14kw Kohler propane generator, but otherwise starting from scratch. Expect loads to be ~7-10 kwh/day, but would like to have headroom for future expansion.

Here's the basic proposed system:

eg4 12000xp inverter
3 eg4 indoor power pro batteries
~5kw solar panels (that's what should fit on the 2 roofs)

The equipment will be housed in a stand-alone, insulated power shed.

The dedicated smart load terminal of the 12000xp is nice, maybe for future ev utv.

The 12000xp's dedicated generator port is also nice but not sure if the Kohler should be wired directly to the inverter versus use 2 chargeverters? It's a reliable, fairly new generator that I'd like to be able to use without additional devices and complexity, and with full integration into the eg4 remote monitoring website & app.

Any thoughts on the proposed system, and on the best way to incorporate the 14kw Kohler, are greatly appreciated. Thanks!

 

[jimf909]

While I've become a fan of charging batteries using a chargeverter (although I hate the made up name, it's a battery charger) and not using the inverter's charger, it sounds like what you're building will work fine without adding the stand-alone battery chargers. If later you find you need the chargeverters then you can add them in. Overall, what you describe seems well matched to consumption.

 

[Suijkerbuijk]

Hello,

Over the last few weeks I've learned a lot reading this forum. There are a lot of knowledgeable people here who are civil and very helpful. Thank you.

I'm looking to upgrade the power system of an off-grid shack (currently mostly propane and wood burning stove) and boathouse (currently no power). It's on the New England coast and used 9+ months a year, but not full time. There is a 14kw Kohler propane generator, but otherwise starting from scratch. Expect loads to be ~7-10 kwh/day, but would like to have headroom for future expansion.

Here's the basic proposed system:

eg4 12000xp inverter
3 eg4 indoor power pro batteries
~5kw solar panels (that's what should fit on the 2 roofs)

The equipment will be housed in a stand-alone, insulated power shed.

The dedicated smart load terminal of the 12000xp is nice, maybe for future ev utv.

The 12000xp's dedicated generator port is also nice but not sure if the Kohler should be wired directly to the inverter versus use 2 chargeverters? It's a reliable, fairly new generator that I'd like to be able to use without additional devices and complexity, and with full integration into the eg4 remote monitoring website & app.

Any thoughts on the proposed system, and on the best way to incorporate the 14kw Kohler, are greatly appreciated. Thanks!

Go for a Victron.
Reason is that Victron is isolated from dc to ac .
You are on water you do not like that your boat will rot away on the metal.

Same with the earth wire that is not connect on the body from the Victron unit.
So you need the earth wire from the port.

Read this wy
Its dutch so use translate by Google on your phone with camera .

Only see how uk is done .

Book i use see last picture.

 

[Rednecktek]

What are you powering that you need a 12k unit?? 7-10kwh a day is a good chunk of power.

If the Kohler isn't an inverter generator, odds aren't great that the 12k will talk to it.

 

[TM48]

I have a similar system. Two 6000xps (same power as 1 12000xp) 2 all weather and one indoor battery. 12.3 kw of PV. The lowest my batteries have been in the last 5 months is 45%. Of course we not in deep winter yet.
If the generator has 3% THD it could be used directly on the gen port but that would interfere with the smart load function so your chargeverter idea maybe better. I intend to buy one before next hurricane season.
If you are subject to building codes you need to verify what equipment will pass muster.