power monitor controlled grid tie inverter ?

Allan Gilbert

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May 10, 2017
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Hi guys , I'm looking into setting up a portableGrid tie inverter solar system to supplement some of the power to my house , but I don't want to pay for the two way power meter and the $800 dollars for setting it all up (i'm renting the house) . So I was wondering if there was a power meter (amp meter) that i could hook up to the main house input to wirelessly control my MPPT or grid tie inverter so i don't push power back up the line but instead power what needs powering and send the rest to my batteries.
 

daromer

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DISCLAIMER: First of all in MOST countries its ILLEGAL to do that without having full approval of having that kind of system!! This is to protect you and your neighbors and the workers...

With that said:

First of all you need proper disconnects and all that installed for it to be "ok" and then you should look for a 0meter system. Some grid-tie can do that like this Chinese one.
If you go the legal route that I HIGHLY recommend when dealing with lethal stuff then you need to check that above also is approved in your country. If not you need to get some other type instead.

If you plan to go the Hybrid route with batteries then you can add a meter to for instance MPP solar Hybrid series
 

completelycharged

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Option 1. Go Hybrid inverter route and just attach/plug in all your "off grid" appliances to the hybrid unit. That way eliminates the need for any separate metering as the export from the hybrid can be turned off. The unit would then remain relatively portable.
Option 2. Cheap route with issues - buy a used 24/48V UPS, put the solar directly into the batteries and then just run your appliances off the UPS output.
Option 3 - Buy a grid tied export limiter inverter connected to your batteries https://www.aliexpress.com/item/1KW...-DC-22-65V-45-90V-with-inter/32843976783.html and then charge your batteries directly from solar.
 

Allan Gilbert

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May 10, 2017
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11
thx guys. Will probably go the hybrid route since getting generator plugs installed up here in the northern territory is almost a mandatory thing due to the amount of power problems we have. tho that grid tie inverter is so cheap wow. thx again.
 

daromer

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Its cheap and in most countries not even legal :p Like where I live its not legal to have installed :D
 
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