The Tigo EI Inverter 7.6kW is a hybrid inverter/charger compatible with a Tigo 50A Automatic Transfer Switch (ATS) for battery backup and off-grid functionality. Designed for residential solar installations, it can be used for solar-only grid-tied systems or paired with Tigo's EI or GO batteries for energy storage. The unit you describe likely refers to the Tigo Energy TSI-7.6K-US model.
Key features
Hybrid functionality: Serves as both a grid-tied inverter and a battery-ready storage controller for residential applications.
High DC oversizing: Offers up to 200% DC oversizing, allowing for up to 15,200W of solar panel input for a 7,600W AC output. This means you can install a larger solar array to maximize energy production, especially on cloudy days.
Multiple MPPTs: Includes three Maximum Power Point Trackers (MPPTs), each capable of handling two strings of PV modules. This flexibility is useful for complex roof layouts or different solar panel orientations.
Wide voltage range: Features a wide MPPT voltage range of 80V to 550V, with a low 50V startup voltage. This allows the inverter to start producing energy earlier in the morning and later in the evening.
Tigo Energy Intelligence Platform: Enables module-level monitoring, optimization, and
rapid shutdown capabilities when paired with Tigo TS4 Module Level Power Electronics (MLPE).
Communication: Comes with built-in Wi-Fi and Ethernet communication, with an option for cellular backup. This provides multiple ways to monitor your system's performance via the EI mobile app.
Durability: Features a rugged NEMA 4X/IP65-rated enclosure, providing protection against the elements.
Backup power capability: When paired with Tigo EI or GO batteries and the necessary 50A ATS, the inverter can provide backup power to a critical loads panel during a power outage. The 7.6 kW model can provide up to 7,600W of continuous backup power at 240VAC.
Important technical specifications
According to Inverters R US, for the Tigo Energy EI Inverter 7.6kW model (compatible with 50A ATS):
Specification Details
AC Nominal Power @ 240V 7,600W
AC Nominal Power @ 208V 6,580W
Max. AC Apparent Power 7,600 VA
Max. Recommended PV Power (STC) 15,200W
Number of MPPTs 3
Number of PV Strings per MPPT 2
MPPT Voltage Range 80V–550V
Max. Efficiency 98.4%
Nominal DC Battery Voltage 400V
Enclosure NEMA 4X / IP65
Weight 32.3 lb (14.65 kg)
Warranty 152 months (~12.7 years)
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