EG4

EG4 Electronics LLC is a solar energy storage and power electronics brand based in Sulphur Springs, Texas. It is part of Energy Access Innovations, the parent company that also owns the solar distributor Signature Solar and opened a 310,000 sq. ft. manufacturing facility in Commerce, Texas, in July 2025.

For off-grid and backup systems, EG4 makes 48 V all-in-one off-grid inverters such as the 6000XP and 12000XP, hybrid inverters including the 12kPV, 18kPV and FlexBOSS models, the MPPT100-48HV charge controller, and 48 V WallMount LiFePO4 batteries. Its own site has no cart: EG4 products are sold through Signature Solar at signaturesolar.com and through a list of approved distributors and installers.

EG4’s warranty pages give 5 years on the XP off-grid inverters, 10 years on the hybrid inverters, 3 years on the MPPT100-48HV and 10 years, prorated, on the WallMount batteries, and cover only products bought from an EG4 approved vendor. EG4’s product pages list UL 1741 certificates for its inverters and UL 1973 and UL 9540A for its WallMount batteries.