Hello,
Great board. Been reading SO MUCH here and other places about solar. I am going all in for solar here in the Southern NV market.
I have an interesting installer design. Everything identical as for orientation, roof location, panels, both systems rating:
Proposed:
System 1. 44 - Panasonic VMHN340SA18 + 44 - Enphase IQ7X microinverters (MI)
System 2. 44 - Panasonic VMHN340SA18, SE P400 Power Optimizers, 2 - SE7600H-US Inverter
Both rated for 14,960 production
BUT, based on there estimated production (pvwatts.com used and I did some modeling myself)
System 1. 26,559 kWh per year
System 2. 27,963 kWh per year
They are reducing the amount of Enphase MI production due to climate (heat) where the MIs will "stop/under perform" to prevent damage to the MI. Not clip, but actually stop performing or reduce production because of heat here in our market. No where can I find any documentation or claims of this type of performance by Enphase MI products. Based on their experience, they have seen this behaviour here in this market. Claims Enphase knows about this "flaw", but does not officially discuss.
Cost for either system is the same, I need to choose between an Enphase or Solar Edge based solution. (~$2.80 per kW installed)
Questions:
1. Anyone have comments on the Enphase performance claim I mention above, i.e. Enphase will stop or reduce their production in very hot climates (and Solar Edge will not)?
2. Any comments on pros/cons between these two OEMs, e.g. monitoring, good/bad experiences? I understand installer is key
Thanks
Great board. Been reading SO MUCH here and other places about solar. I am going all in for solar here in the Southern NV market.
I have an interesting installer design. Everything identical as for orientation, roof location, panels, both systems rating:
Proposed:
System 1. 44 - Panasonic VMHN340SA18 + 44 - Enphase IQ7X microinverters (MI)
System 2. 44 - Panasonic VMHN340SA18, SE P400 Power Optimizers, 2 - SE7600H-US Inverter
Both rated for 14,960 production
BUT, based on there estimated production (pvwatts.com used and I did some modeling myself)
System 1. 26,559 kWh per year
System 2. 27,963 kWh per year
They are reducing the amount of Enphase MI production due to climate (heat) where the MIs will "stop/under perform" to prevent damage to the MI. Not clip, but actually stop performing or reduce production because of heat here in our market. No where can I find any documentation or claims of this type of performance by Enphase MI products. Based on their experience, they have seen this behaviour here in this market. Claims Enphase knows about this "flaw", but does not officially discuss.
Cost for either system is the same, I need to choose between an Enphase or Solar Edge based solution. (~$2.80 per kW installed)
Questions:
1. Anyone have comments on the Enphase performance claim I mention above, i.e. Enphase will stop or reduce their production in very hot climates (and Solar Edge will not)?
2. Any comments on pros/cons between these two OEMs, e.g. monitoring, good/bad experiences? I understand installer is key
Thanks
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