NEP BDM-600X
#7 in Two panelFull review
The cheapest way per watt to run pairs of 300 W class panels, but confirm the warranty with the seller before buying.
Signature Solar $100$100
The NEP BDM-600X rates 3.6 among two panel microinverters; the Enphase IQ8 rates 3.5 among one panel ones. The NEP BDM-600X costs $54.81 less ($100 vs $154.81).
Enphase IQ8
#11 in One panelFull review
For adding to or repairing an existing Enphase system with older 60 cell panels. On a new build with modern panels, an IQ8M or larger costs less per watt.
GoGreenSolar $154.81$154.81
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different panel count classes (two panel and one panel), and each is scored against the reference points for its own class, so a rating says how well each does among its own panel count peers. How we rank explains each factor.
| Factor weight | NEP BDM-600X | Enphase IQ8 |
|---|---|---|
| Overall rating | 3.6/5 | 3.5/5 |
| Value 25% | 90 $0.17 per watt ($100, 580 W) | 0 $0.65 per watt ($154.81, 240 W) |
| Grid listing 20% | 100 UL 1741 listed, meets rapid shutdown | 100 UL 1741 listed, meets rapid shutdown |
| Efficiency 15% | 60 96.5% CEC weighted efficiency | 80 97% CEC weighted efficiency |
| Input current 15% | 50 14 A per input | 0 10 A per input |
| Warranty 25% | 0 warranty not published, scored as none | 100 25-year warranty |
Specifications
| NEP BDM-600X | Enphase IQ8 | |
|---|---|---|
| Output | ||
| Panel inputs | 2 | 1 |
| AC output | 580 W | 240 W |
| Grid voltage | 240 V split phase or 208 V | 240 V split phase |
| CEC efficiency | 96.5% | 97% |
| Peak efficiency | - | 97.7% |
| Panel input | ||
| Largest panel | 450 W | 350 W |
| Current per input | 14 A | 10 A |
| MPPT range | 22 to 55 V | 27 to 37 V |
| Listing and build | ||
| UL 1741 | Yes | Yes |
| Rapid shutdown | Yes | Yes |
| Monitoring | power line to a gateway | gateway (sold separately) |
| Enclosure | IP67 (NEMA 6) | NEMA 6 |
| Weight | 6.4 lb | 2.4 lb |
| Warranty | - | 25 years |
| Released | - | 2021-12 |