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Enphase IQ 7+ vs Enphase IQ 6+ : The Difference Between the Micro Inverters

The Enphase IQ 7 and Enphase IQ 7+ microinverters came out in Q1 of 2018 (and now there's talks of the Enphase IQ8 coming in 2019). The 7th generation of Enphase micro inverters are optimized for high-powered 60-cell and 72-cell modules, compatible with modules over 420W.


Here we compare the Enphase IQ7+ vs the Enphase IQ6+:



Enphase IQ 7+


Enphase IQ 6+

System Compatibility

IQ System


System Compatibility

IQ System

Primary Use

Residential / Commercial


Primary Use

Residential

Project Voltage

120/240V or 120/208V (1φ)


Project Voltage

120/240V or 120/208V (1φ)

Commonly Used Module Pairing - Input Power

235 - 420+W


Commonly Used Module Pairing - Input Power

235 - 400+W

MPPT Range

27 - 45 V


MPPT Range

27 - 45 V

Operating range

16 V - 60 V


Operating range

16 V - 62 V

Min/Max start voltage

22 V / 60 V


Min/Max start voltage

22 V / 62 V

Max DC short circuit current

15 A


Max DC short circuit current

15 A

Peak Output Power

295 VA


Peak Output Power

290 VA

Maximum Continuous Output Power

290 VA


Maximum Continuous Output Power

280 VA

Maximum Continuous Output Current

1.21 A @ 240 V / 1.39 A @ 208 V


Maximum Continuous Output Current

1.17 A @ 240 V / 1.35 A @ 208 V

CEC Efficiency

97.0%


CEC Efficiency

97.0%

CEC weighted efficiency

96.5% at 208VAC / 97.0% at 240VAC


CEC weighted efficiency

96.5% at 208VAC / 97.0% at 240VAC

Module Compatibility

60-cell and 72-cell modules


Module Compatibility

60-cell and 72-cell modules

Smart Grid Ready

Yes


Smart Grid Ready

Yes

Dimensions (WxHxD)

212mm x 175mm x 30.2mm (without bracket)


Dimensions (WxHxD)

219mm x 191mm x 37.9mm (without bracket)

Weight

1.08 kg (2.38 lbs)


Weight

1.5 kg (3.3 lbs)


Summary:
The Enphase IQ 7+ has the following main advantages over the Enphase IQ 6+ model:

1. More compact, with over a 38% reduction in weight



2. Compatibility with higher wattage solar panels and an increased power output

3. Along with the reduced weight, there’s a reduction in parts needed for production (338 in the Enphase IQ7 vs 364 in the Enphase IQ6), which should hopefully translate to more competitive pricing


There's a shortage currently of the Enphase IQ models. You can read more about the Enphase shortage here. A popular microinverter alternative to Enphase is APsystems. You can find a comparison of YC600 vs the IQ7 and IQ7+ here.

Note: December 2017 version of the datasheet listed the weight of the IQ7 and IQ7+ as .92 kg (2.03 lbs), but the January 2018 version lists it as 1.08 kg (2.38 lbs).

Originally written 12/27/2018, updated 11/29/2018.