What does the 12000XP Off-Grid Inverter offer on paper?
The 12000XP Off-Grid Inverter is rated for 12000 W of continuous AC output at 240 V on a split phase. Its rated surge is 15360 W for up to 10 s.
For motor loads, it lists a locked rotor rating of 195 A. On large loads, it sits in the group with 2000 W or more of continuous AC output.
| Power and capacity | |
|---|---|
| Continuous AC output | 12000 W |
| Surge output | 15360 W |
| UPS switchover (max) | 10 ms |
| Solar charging | |
| Max solar input | 24000 W |
| Size and moving it | |
| Width | 20.87 in |
| Height | 34.25 in |
| Weight | 104.7 lb |
| Temperature and warranty | |
| Warranty | 5 years |
| Product | Best current price | Watts per dollar | Value rank |
|---|---|---|---|
| EG4 Electronics 12000XP Off-Grid Inverter | $1,899.99 at Signature Solar | 6.32 W/$ | #1 of 5 |
| EG4 Electronics 18kPV Hybrid Inverter | $4,699.08 at A1 SolarStore | 2.55 W/$ | #3 of 5 |
| MidNite Power MN15-12KW-AIO Hybrid Inverter/Charger | $5,650.23 at A1 SolarStore | 2.02 W/$ | #5 of 5 |
| EG4 Electronics FlexBOSS18 Hybrid Inverter | $3,879.57 at A1 SolarStore | 3.35 W/$ | #2 of 5 |
| Sol-Ark Limitless 15K-2P-N Hybrid Inverter | $6,099.15 at A1 SolarStore | 2.46 W/$ | #4 of 5 |
How big and heavy is the 12000XP Off-Grid Inverter?
The 12000XP Off-Grid Inverter weighs 104.7 lb, which puts it in the heavy (over 50 lb) class. It stands 34.25 in tall, 20.87 in wide and 5.91 in deep. Heavy units go up more easily with a helper and a plan for how you will support them.
The enclosure rating is IP20. A low IP rating offers little protection against dust and water, so check the maker's install guidance. It is rated to run from 0 C up to 45 C.
If your garage or shed drops below freezing in winter, plan for heat or pick a warmer room.
How much solar can the 12000XP Off-Grid Inverter take?
The 12000XP Off-Grid Inverter takes up to 24000 W of solar input, and the maker suggests an array of up to 28000 W. It has 2 MPPT inputs that track from 120 V to 385 V, and the most PV voltage it accepts is 480 V.
Size each panel string so its voltage on a cold morning stays under the input limit.
What batteries does it work with?
It runs on a 48 V battery bank and works with lead-acid or lithium. The battery window runs from 46.4 V to 60 V.
Charge and discharge current both top out at 250 A. Check that your battery's own current limit can keep up before you pair them.
What happens when the power goes out?
The 12000XP Off-Grid Inverter is rated for a switchover of 10 ms at most, inside the 20 ms or less mark for UPS switchover speed. A fast switch matters most for computers, routers and other gear you do not want to reboot.
Generator input is listed as yes, and up to 16 units can run in parallel.
Which inverter here gives the most watts per dollar?
The 12000XP Off-Grid Inverter gives 6.32 W/$, which ranks #1 of 5 on value in this article. That figure comes from its price of $1,899.99 new at Signature Solar.
The FlexBOSS18 Hybrid Inverter comes next at 3.35 W/$, ranked #2 of 5. Watts per dollar is a fair way to line up inverters, but it does not count features such as enclosure type or warranty length.
Where does the 12000XP Off-Grid Inverter fall short?
The 12000XP Off-Grid Inverter lists a warranty of 5 years, while the 18kPV Hybrid Inverter, MN15-12KW-AIO Hybrid Inverter/Charger, FlexBOSS18 Hybrid Inverter and Limitless 15K-2P-N Hybrid Inverter each list 10 years. On top of that, the inverter must be registered for the warranty to apply.
Register any inverter as soon as it is installed, so the paperwork is done before you need it. Its rated range starts at 0 C, against -25 C on each of the hybrid models in this article.
Who is the 12000XP Off-Grid Inverter right for?
At $1,899.99 from Signature Solar, the 12000XP Off-Grid Inverter is rated for 12000 W of continuous output. That price gives it the best watts per dollar here, at 6.32 W/$ and #1 of 5.
For an outdoor or unheated install, weigh the enclosure and temperature specs first. If grid sell back or rapid shutdown matters for your permit, check each spec sheet for it before you buy.
What does the 18kPV Hybrid Inverter add for the extra cost?
The 18kPV Hybrid Inverter matches the 12000XP Off-Grid Inverter at 12000 W of output. Its rated surge is 15500 W for up to 300 s, against 10 s on the 12000XP Off-Grid Inverter.
Grid sell back and rapid shutdown are both marked yes, and the case is NEMA 4X. Its current new price is $4,699.08, which ranks #3 of 5 on value at 2.55 W/$.
Where does the MN15-12KW-AIO Hybrid Inverter/Charger fit in?
The MN15-12KW-AIO Hybrid Inverter/Charger is last on value at #5 of 5, with 2.02 W/$ at a price of $5,650.23. It gives 11400 W, or 10000 W when it runs from the battery alone.
Its tracking range runs from 70 V to 550 V, against 120 V to 385 V on the 12000XP Off-Grid Inverter. It weighs 101.85 lb in a NEMA 3R case and is rated down to -25 C.
How does the FlexBOSS18 Hybrid Inverter compare with the 12000XP Off-Grid Inverter?
Against 12000 W on the 12000XP Off-Grid Inverter, the FlexBOSS18 Hybrid Inverter is rated for 13000 W of output. Its current new price is $3,879.57, and it ranks #2 of 5 at 3.35 W/$. Its rated surge is 20000 W for 0.5 s.
Grid sell back is marked yes, the case is NEMA 4X, and the operating range is -25 C to 60 C. It weighs 115 lb.
How do the Limitless 15K-2P-N Hybrid Inverter and 12000XP Off-Grid Inverter differ?
The Limitless 15K-2P-N Hybrid Inverter gives 15000 W and is rated to switch over in 5 ms, against 12000 W and 10 ms on the 12000XP Off-Grid Inverter. Its listed battery type is lithium, and its case is rated IP65 / NEMA 3R.
It weighs 135 lb, against 104.7 lb for the 12000XP Off-Grid Inverter. Priced at $6,099.15, it ranks #4 of 5 at 2.46 W/$.