Hi Rebecca, After you posted this I looked at the power production history for several of our Enphase sites with M190s, and the same thing is happening. Inverter output is being clipped at 140W across the board. This seems like a pretty big deal in terms of potential lost production for a lot of users.
Have you brought this up with Enphase? -Luke NABCEP Certified PV Installation Professional™: Certification #031409-25 NABCEP Certified Solar Heating Installer™: Certification #ST032611-03 CoSEIA Certified PV Installer Solar Gain Services, LLC PO Box 531 Monte Vista, CO 81144 sgsrenewab...@gmail.com 719.588.3044 www.sgsrenewables.com > On Jan 31, 2016, at 21:08, Rebecca Lundberg > <rebecca.lundb...@powerfullygreen.com> wrote: > > I just noticed that several of our sites with Enphase M190s are current > limiting at 140 watts. These units used to clip at 199 watts so I feel like > our customers just lost a potential 30% of their power output. It appears to > be related to a firmware update 520-00008-r01-v01.08.00. We've got one site > with just 8 units, 1 of them got this firmware update back in September and > has been limiting to 140w since then, 5 of them got this update in late > January and have been limiting to 140w since then, the other two are at a > previous firmware version and are performing as we would expect up to 199w. > Have any of you noticed this same thing? Do you know what this is about? It > doesn't feel very fair on the user end of things. > > Sincerely, > > Rebecca Lundberg > Powerfully Green > Minnesota >
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