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PV : Power vs Efficiency & Performance
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<blockquote data-quote="Bob Smith" data-source="post: 536924" data-attributes="member: 35176"><p>Hi Binky,</p><p></p><p>I have done some sketches!!!</p><p></p><p>I have tried different layouts. That is I have played with different panels sizes (from the same brand), therefore different power.</p><p></p><p>Using the panels originally quoted:</p><p>1st quote 24 x 400W = 9600W</p><p>2nd quote 20 X 470W = 9400W</p><p></p><p>With trying different sizes based on availability on ITS website for the JA Solar brand (which was used for the 2nd quote)</p><p>15 x 545W + 4 x 405W + 2 x 460W = 9885W</p><p></p><p>As the second quote is already more expensive than the 1st quote, if I propose to use a mix of panels it will be even more expensive. I am talking about between 2 to 3kGBP. I think I better stick with the 24 X 400W scenario.</p><p></p><p>The first quote use a 2 String MPPT inverter + Tigo Optimizer, while the second quote is with micro inverters. I believe micro inverters are significantly more expensive than the Tigo Optimizer but there is no need of an inverter.</p><p></p><p>The drawback you explained about having more connections point with micro inverters is surely the same with Tigo optimizer.</p></blockquote><p></p>
[QUOTE="Bob Smith, post: 536924, member: 35176"] Hi Binky, I have done some sketches!!! I have tried different layouts. That is I have played with different panels sizes (from the same brand), therefore different power. Using the panels originally quoted: 1st quote 24 x 400W = 9600W 2nd quote 20 X 470W = 9400W With trying different sizes based on availability on ITS website for the JA Solar brand (which was used for the 2nd quote) 15 x 545W + 4 x 405W + 2 x 460W = 9885W As the second quote is already more expensive than the 1st quote, if I propose to use a mix of panels it will be even more expensive. I am talking about between 2 to 3kGBP. I think I better stick with the 24 X 400W scenario. The first quote use a 2 String MPPT inverter + Tigo Optimizer, while the second quote is with micro inverters. I believe micro inverters are significantly more expensive than the Tigo Optimizer but there is no need of an inverter. The drawback you explained about having more connections point with micro inverters is surely the same with Tigo optimizer. [/QUOTE]
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