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.
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.) Jason Szumlanski Fafco Solar From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Keith Cronin Sent: Monday, January 16, 2012 2:35 PM To: RE-Wrenches Subject: [RE-wrenches] Enphase- How big is too big Recently, I was asked, how big is too big- to use micro inverters vs a string inverter for a small commercial system. 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. 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. 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. 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? How many modules? 30, 50, 100? (same question, different approach) Appreciate it. Aloha, Keith
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