Will Prowse Approved.

48V Hybrid Inverters

If you need a code compliant and permitted system in any state out there (even California), you need every certification out there! Every inverter on this page is ready to run for decades without any drama. If a product makes it on this list, it is very special! (affiliate links below)

EG4 Gridboss/Flexboss

This system is easy to scale and works great! They had overheating issues, but the latest software update fixes that.

Check out my write up on how to design and install these, and where to purchase:

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Sol Ark 15K

I love my Sol Ark! This inverter is cream of the crop and has been around for a long time. The 15K can back up most homes! Incredible system.

Two Built-In 500V MPPT Charge Controllers
1 – 6 PV Strings
Battery Disconnect
48V Battery Input
Auto-Generator Start, works with any generator that has 2 wire start.
Rapid Shutdown Signal
Built in Arc Fault and Ground Fault detection
Current Sensors Included
Battery Communication for LiFePO4.
Works with any battery type, FLA, AGM, SLA, LFP.
PV Disconnect
Wiring Knockouts an & WiFi
50A Breakers:
AC In/Out, AC Load Out
AC Gen In/Smart Load Out
Remote programmable monitoring and configuration included
Next Generation Efficiency
93% RTE – The most efficient in the world in/out of batteries
120/240V single/split phase & 120/208V three-phase in the same unit
Stackable up to nine in parallel
Easy AC-couple retrofit
No microinverters, no optimizers necessary on new installs
All-in-One box
Easy plug ‘n play install and inventory management
Everything needed for Grid Tied, Hybrid, or Off-Grid inside
Manages power from Solar, Battery, Grid, Load, and Generator simultaneously
10-Year Standard Warranty Included

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Sol Ark 18K! Huge!

I had no idea this was released. If your house cannot be backed up with the 15K, this is the way to go.

From the manufacturer:

Sol-Ark’s 18K-2P hybrid inverter continuously outputs up to 18kW from batteries alone and can pass up to 200A from the grid. It’s ideal for off-grid systems, on-grid systems, and systems selling to the grid.

Specifications:

Continuous output power: 18kW @ 120/240V
3x MPPTs, up to 500Vdc max
2x inputs per MPPT
MPPT operating voltage range: 150-425V
Max. usable input current per MPPT: 36A
Max. short circuit current per MPPT: 54A
Max. utilized solar power: 28.8kW
Max. charge/discharge current: 350A
Max. grid bypass: 200A
Certified to UL 1741 Standards
Weight: 137lbs
Dimensions (H×W×D): 33.98×18.27×11.10in

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