APsystems DS3
#1 in Two panelFull review
The two panel pick for big modern panels: the highest input current here and a low price per watt from retailers.
APsystems $295 US Solar Supplier $193.19$193.19
A microinverter mounts on the racking behind one to four solar panels and turns their DC output into AC that feeds straight into the house wiring. Because each panel or small group of panels has its own inverter, shade or a fault on one panel doesn’t pull down the rest, and the array meets rapid shutdown rules without extra roof hardware. These rankings compare what the makers publish on the same terms: what each costs per watt of output, whether it carries the listing a utility asks for, how efficient it is, how much panel current it takes and how long it’s covered.
Panel count is the first choice. A single-panel unit gives each panel its own inverter, which handles shade and mixed roof angles best and is the simplest to expand one panel at a time. Two- and four-panel units cut the number of inverters on the roof and usually the price per watt, but one failure takes more panels offline.
Panel size is the second. Match the inverter’s continuous AC output to the panel’s wattage and its input current to the panel’s current: a 450 W panel puts out around 13 to 14 A, and an inverter rated below that clips the output on bright days.
Grid listing is the third. Most US utilities and inspectors ask for a UL 1741 listing, and many now want the newer UL 1741 SB, so check what yours requires before buying a brand you haven’t seen on their approved list.
Top Picks
Hoymiles HMS-2000-4T-NA
#1 in Four panelFull review
For large arrays of 450 W+ panels where cost per watt matters most. It handles the biggest panels on sale today.
Self2Solar $389$389
Shop by Panel Count
One panel
11 rankedOne inverter per panel: the most shade tolerant layout and the simplest to expand.
Top rated: Duracell D350-M1A $110.38
Two panel
8 rankedOne inverter for a pair of panels: fewer units on the roof and a lower price per watt.
Top rated: APsystems DS3 $193.19
Four panel
5 rankedOne inverter for four panels, for big arrays where cost per watt matters most.
Top rated: Hoymiles HMS-2000-4T-NA $389
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By budget
By feature
Deals
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.
Best Single-Panel Microinverters
- Duracell D350-M1A#1 of 11Full review
A low cost one panel unit for 400 to 450 W panels, with input current to spare and the same 25 year warranty as Enphase.
Signature Solar $110.38$110.38350 W20 A25 years - Enphase IQ8HC#2 of 11Full review
The Enphase choice for today’s 450 W and larger panels. It gets the most output per panel in the line at its lowest price per watt.
altE $161 US Solar Supplier $185.44 Signature Solar $239.75$161384 W14 A25 years - Enphase IQ8MC#3 of 11Full review
The best value in the Enphase line for 350 to 450 W panels. It takes more current than the IQ8M for less money.
US Solar Supplier $149.46 Signature Solar $211$149.46320 W14 A25 years - Hoymiles HMS-500-1T-NA#4 of 11Full review
A single panel inverter for big 500 W+ panels where shade or odd roof planes call for one inverter per panel. For a plain array, a Hoymiles four panel unit costs much less per watt.
Self2Solar $199$199475 W14 A25 years - Enphase IQ8AC#5 of 11Full review
The Enphase pick for 400 to 500 W panels, replacing the IQ8A with a higher input current at a lower price.
US Solar Supplier $173.96 Signature Solar $211 altE $227.44$173.96349 W14 A25 years
Best Dual-Panel Microinverters
- APsystems DS3#1 of 8Full review
The two panel pick for big modern panels: the highest input current here and a low price per watt from retailers.
APsystems $295 US Solar Supplier $193.19$193.19880 W20 A25 years - APsystems DS3-L#2 of 8Full review
A cheap, efficient two panel unit for pairs of 350 to 450 W panels, with input current to spare.
APsystems $245 US Solar Supplier $177.56 Shop Solar Kits $184.98$177.56768 W18 A25 years - Duracell D600-M2A#3 of 8Full review
A two panel unit for smaller 300 to 350 W panels. Pairs of modern 400 W+ panels lose output to clipping.
Signature Solar $197.50$197.50590 W20 A25 years - Hoymiles HMS-1000-2T-NA#4 of 8Full review
A strong value for pairs of 450 to 600 W panels, with enough input current for big modern modules.
Self2Solar $269$269958 W16 A25 years - APsystems DS3-S#5 of 8Full review
A two panel unit for smaller 300 to 350 W panels. Most buyers should get the DS3-L, which costs less.
APsystems $205 US Solar Supplier $195$195640 W16 A25 years
Best Four-Panel Microinverters
- Hoymiles HMS-2000-4T-NA#1 of 5Full review
For large arrays of 450 W+ panels where cost per watt matters most. It handles the biggest panels on sale today.
Self2Solar $389$3891,918 W16 A25 years - Hoymiles HMS-1800-4T-NA#2 of 5Full review
A low cost way to run four 360 to 600 W panels from one inverter, priced below the smaller HMS-1600.
Self2Solar $369$3691,660 W15 A25 years - Hoymiles HMS-1600-4T-NA#3 of 5Full review
For four panels of 320 to 540 W, but the HMS-1800 costs less for more output, so buy this only if it is cheaper where you shop.
Self2Solar $379$3791,440 W14 A25 years - Hoymiles HM-1500NT#4 of 5Full review
An older four panel design for 300 to 450 W panels. The newer HMS-1800 and HMS-2000 cost the same or less and take more current.
Self2Solar $387.50$387.501,438 W11.5 A25 years - APsystems QS1#5 of 5Full review
A four panel unit for 300 to 450 W panels at a low price per watt, but check that your utility accepts UL 1741 SA and price the warranty extension.
APsystems $295$2951,200 W14 A10 years
How We Rank
Each microinverter is ranked against others with the same panel count, and scored on its price per watt of AC output, its UL 1741 listing and rapid shutdown, its CEC efficiency, the current each input takes and its warranty.
| Factor | Measures | Weight |
|---|---|---|
| Value | price per watt of AC output | 25% |
| Grid listing | UL 1741 listing and rapid shutdown, which inspectors and utilities ask for | 20% |
| Efficiency | CEC weighted efficiency | 15% |
| Input current | DC current each input accepts, so big modern panels aren't clipped | 15% |
| Warranty | warranty length | 25% |
How we rank explains each factor in full.