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Sol Ark 8k a hybrid grid tied inverter that supports critical loads.

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  • Sol Ark 8k a hybrid grid tied inverter that supports critical loads.

    I want to be able to use PV during grid outages. The Sol-Ark 8k and their critical load panel looks like a pretty good solution that's "affordable". I'd start without any batteries but with a generator. Later I'll add 200AH of LIFEPO4 batteries. My solar input will be 32ea 305W panels (4 strings of 8) with Tigo rapid shutdown hardware. It appears that this choice will add about $0.40/STC watt to my cost without batteries and another $0.70 /watt for batteries. I'm pretty impressed with the Sol Ark. Has anyone here used one? Should I pay a bit more and use Tigo optimisers to get per panel monitoring?

  • #2
    Originally posted by Jerry Liebler View Post
    .......... I'm pretty impressed with the Sol Ark. Has anyone here used one? Should I pay a bit more and use Tigo optimisers to get per panel monitoring?
    I haven't used a Sol Ark, but I did buy some Tigo Optimizers to use with a Outback Skybox. The Tigos are versatile. I bought them because of potential shading and think I would have to have a different model or at least a hub for panel monitoring.
    Last edited by Ampster; 04-19-2019, 01:53 PM.

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    • #3
      Originally posted by Ampster View Post

      I haven't used a Sol Ark, but I did buy som Tigo Optimizers to use with a Outback Skybox. The Tigos are versatile. I bought them because of potential shading and think I would have to have a different model or at least a hub for panel monitoring.
      The Skybox is certainly similar, in capabilities, to the Sol Ark. I believe the Sol Ark is a newer competitor to the Skybox, I'm curious what you think of it.

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      • #4
        Originally posted by Jerry Liebler View Post

        The Skybox is certainly similar, in capabilities, to the Sol Ark. I believe the Sol Ark is a newer competitor to the Skybox, I'm curious what you think of it.
        I have had two Outback Inverters. The Skybox was just released last Fall and I got one of the early ones. I had a Tesla Powerwall on order to supplement my existing 5.7kW grid tie solar. I got impatient with Tesla and the only vendors with SGIP funding had jacked up the prices.
        I decided to order the Skybox and cancel the Powerwall. I had about 9 to 10kW of Nissan Leaf batteries. The Skybox was disappointing when I ran it only on batteries. I couldn't get the load shifting to operate like my earlier Outback Radian. I bought some used Sunpowee panels and the Skybox did a good job on Grid Zero mode. The Skybox is limited to 5kW of solar which is not a problem for me but based on your system size it would be too small.

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        • #5
          Originally posted by Ampster View Post

          I have had two Outback Inverters. The Skybox was just released last Fall and I got one of the early ones. I had a Tesla Powerwall on order to supplement my existing 5.7kW grid tie solar. I got impatient with Tesla and the only vendors with SGIP funding had jacked up the prices.
          I decided to order the Skybox and cancel the Powerwall. I had about 9 to 10kW of Nissan Leaf batteries. The Skybox was disappointing when I ran it only on batteries. I couldn't get the load shifting to operate like my earlier Outback Radian. I bought some used Sunpowee panels and the Skybox did a good job on Grid Zero mode. The Skybox is limited to 5kW of solar which is not a problem for me but based on your system size it would be too small.
          I'm planning on a total pv of around 20KW. With the Sol Ark I'd have about half battery backed and the rest on a second conventional Solar Edge system. If I get it online this year I'll get grandfathered onto net metering.

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          • #6
            I have a Sol-Ark 8k and it was a breeze to install and set up. I already had the generator panel they use wired. The Sol-Ark is limited to 10kW of solar right now. They've upped it through software updates recently. What do you want to know?

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