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<div id="signature"> You and the client lose the ability to monitor it all in one place do you not?<br />
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<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
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<p id="reply-intro">On 2024-06-29 4:48 pm, Kirk Herander via RE-wrenches wrote:</p>
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<div>All,</div>
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<div>I'm wondering if there are any precautions if charging a Fortress Evault LFP bank using 1 or more OB charge controllers, in tandem with an Envy inverter PV input.</div>
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<div>I know it will have to be programmed differently, and it will be open loop, no CC control from the BMU,.</div>
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<div>This is a net metered system using a Fortress 12 kw inverter. The total PV input of the inverter is 21 kw. Max sell back is 12 kw, while charging batteries at 6 kw.</div>
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<div>My issue is the customer has his heart set on maxing out the roof capacity at 25 kw. And I don't really need to add a second inverter for critical loads, Only to increase integrated DC-coupled PV capacity.</div>
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<div>So I feasibly put part of the array on external charge controller(s) , open-looped, and the remainder on a single 12kw Envy inverter.</div>
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<div>A second inverter also increases the AC capacity, and as a result, involves a more comprehensive review for net metering approval in Vermont (new trigger for additional review is greater than 15 kw AC)..</div>
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