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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>We have a systems with over 200 microinverters installed, and they work great. Enphase has a fair labor reimbursement policy for warranty swaps. While we have swapped a fair number of micros in the past, problems are becoming fewer and farther between, and we are compensated for this work.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I would have no problem recommending a system of 100kW or more, especially if the physical serviceability of the system is good (easy access, ground mount, etc.)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Jason Szumlanski<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Fafco Solar</span><span style='font-size:4.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> re-wrenches-bounces@lists.re-wrenches.org [mailto:re-wrenches-bounces@lists.re-wrenches.org] <b>On Behalf Of </b>Keith Cronin<br><b>Sent:</b> Monday, January 16, 2012 2:35 PM<br><b>To:</b> RE-Wrenches<br><b>Subject:</b> [RE-wrenches] Enphase- How big is too big<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal style='background:white'><span style='color:black'>Recently, I was asked, how big is too big- to use micro inverters vs a string inverter for a small commercial system.<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>With my own experience, we did a 10kW system and the owner was ecstatic with the level of detail and the reporting, as over the last couple of years, we had a few inverters that seemed to not be reporting, which Enphase replaced, regardless of why they weren't functioning.<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>Yes, we had a few trips to the site to swap out and replace, but overall I believe knowing that its working vs guessing that everything is working is better. <o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>As string inverters become smarter- aka, can identify under performance via technology, I'm left to wonder, how many systems are deployed out there that I've done or others over the last 15 years or so and how many are working, as designed, as the likelihood of having access to the data could be non-existent.<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>So, if a prospect wants to have the granularity and is ok with the prospect of micro inverter failures, then how big would you make the system? 10kW, 20kW, 30kW?<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>How many modules? 30, 50, 100? (same question, different approach)<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>Appreciate it.<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'> <o:p></o:p></span></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt;background:white'><span style='color:black'>Aloha,<o:p></o:p></span></p></div><div><p class=MsoNormal style='background:white'><span style='color:black'>Keith<o:p></o:p></span></p></div></div></div></body></html>