Tigo Energy · TSI-11.4K-US / 601-2111K4-0003
Ready to buy
The retained equipment reference is $2,660 current U.S. retail price. Confirm the 11.4kW U.S. part, ATS size, TS4 function and battery generation because the inverter alone does not provide transfer or module-level visibility. Require string or branch calculations, exact listings, settings, permit and utility scope, commissioning exports, credentials, warranty labor and final installed price.
Current market
Each line carries its own check date because price, software, specifications, and product cycle do not age at the same speed.
Confirm the 11.4kW U.S. part, ATS size, TS4 function and battery generation because the inverter alone does not provide transfer or module-level visibility. Confirm authorized U.S. stock, tax, freight, accessories, design, installation, warranty and return terms before paying.
Choose Tigo EI when four MPPTs and selective TS4 optimization avoid mandatory optimizer cost while preserving a single-vendor battery and backup path.
Other paths
These are not generic competitors. Each one represents a different way to buy into the same market.
SolarEdge
Solis
What changed
Older observations stay in the ledger when the current view changes. That lets a buyer tell the difference between an old complaint, an active issue, and a problem that was corrected.
EI Inverter 11.4kW was checked against exact manufacturer identity and support, current equipment price, independent equipment evidence, complete electrical, rapid-shutdown, interconnection, monitoring, service and outcome boundaries and bounded owner or installer reports.
Each amount stays tied to its source and capture date. Conflicting prices remain visible until the seller resolves them.
Current reference priceA structured timeline will begin with the next source capture
Owner experience
Owner and installer evidence is retained as a design, commissioning and service checklist for EI Inverter 11.4kW, especially ts4 function selection, ats commissioning, app ownership, battery pairing and replacement support, not as a yield, safety or reliability rate.
Reports are self-selected and span different modules, orientations, climates, stringing, branches, services, batteries, generators, utilities, codes, installers, firmware, tariffs, monitoring and system ages. They cannot prove yield, savings, fire safety, code compliance, permission, backup behavior, reliability or service outcomes for another site.Self-selected owners and installers discuss quotations, stringing, clipping, commissioning, monitoring, firmware, faults, replacement labor and support. Reports are anecdotal, configuration-specific and do not establish yield, savings, safety, reliability or failure rates.
Put each roof module's TS4 function and the ATS and battery part numbers on the one-line, then run the documented backup test before handoff.
1 evidence recordSources
The page separates what a source states directly from what we conclude across sources.
Tigo Energy identifies exact model TSI-11.4K-US / 601-2111K4-0003 as an 11.4kW hybrid with four MPPTs, optional Tigo TS4 optimization and monitoring, integrated revenue metering and 50A or 200A ATS paths.
$2,660 current U.S. retail price was retained for exact model TSI-11.4K-US / 601-2111K4-0003. Confirm the 11.4kW U.S. part, ATS size, TS4 function and battery generation because the inverter alone does not provide transfer or module-level visibility
Tigo EI is an AC- or DC-couplable hybrid and conventional string inverter. TS4 devices are optional by function except where the roof's rapid-shutdown design requires them, allowing optimization only where justified The exact model supplies 11.4kW at 208 or 240V, supports up to 200% documented DC oversizing and uses four MPPTs with an 80V start. Tracker current, string length, cold Voc and output current remain binding TS4-A-F, TS4-A-2F, TS4-A-O and other TS4 models provide different rapid-shutdown, monitoring and optimization functions and cannot be treated as interchangeable. Battery operation is limited to Tigo's current EI or GO compatibility documentation
Backup requires the listed 50A or 200A ATS, supported battery, neutral and load-panel design and commissioning test. The inverter's power rating does not establish service passthrough, motor start, every-load operation or utility export permission Integrated AFCI and rapid-shutdown transmitter need the correct receivers and layout. Preserve RGM, EPO, ATS, conductor, breaker, disconnect, grounding, UL listing, IEEE 1547 profile, NEC edition, fire access, permit and PTO NEMA 4X or IP65 use remains subject to clearances, temperature derating, sun, snow, conduit drainage, fan or airflow behavior and service access. The 45-pound class cabinet still requires secure mounting The current inverter warranty, battery, ATS, TS4 and labor terms are separate. Confirm installer certification, replacement shipping and who supports a mixed roof of monitored and unmonitored TS4 functions
EI App commissions the inverter and can work locally for defined tasks, while EI monitoring, cellular and remote support add cloud dependencies. Document homeowner and installer roles, account transfer, offline controls, interval data and firmware access
The current independent equipment database retains model TSI-11.4K-US with its tested AC rating, voltage, efficiency and grid-support identity. A database listing does not approve a roof, string, battery, grid profile or utility interconnection.
DOE separates equipment ratings from site design, production estimates, bids, financing, installation, permits, interconnection and operating results. A solar proposal remains site- and contract-specific.
Interconnection requires the serving utility's application, technical review, approved equipment and operating settings. An inverter listing or installer promise does not grant permission to export or operate.
PV equipment remains energized from multiple sources and must follow adopted electrical, rapid-shutdown, disconnect, labeling, access and fire-safety requirements. A listed component does not prove a complete installation compliant.
Self-selected owners and installers discuss quotations, stringing, clipping, commissioning, monitoring, firmware, faults, replacement labor and support. Reports are anecdotal, configuration-specific and do not establish yield, savings, safety, reliability or failure rates.
Home Hub Inverter 11.4kW is the optimizer-based high-voltage hybrid alternative at $3,743.99 current U.S. MSRP reference.
S6 Hybrid 11.4kW is the open-matrix high-voltage hybrid alternative at $1,850 current promotional U.S. retail price.
Manufacturer identity, exact model specification or manual, current U.S. support and equipment price, independent equipment or utility evidence and bounded owner or installer evidence were checked on August 19, 2026. This market covers current U.S.-supported residential grid-tied solar, microinverter, battery-ready, hybrid and inverter-charger systems whose conversion, module electronics, battery, service or islanding architecture materially changes the buyer decision. It excludes battery systems counted again as inverters, capacity-only siblings, OEM rebadges, bare optimizers and rapid-shutdown parts, commercial-only three-phase platforms, unsupported imports, obsolete systems and installer proposals without model-level equipment. Preserve exact nominal and continuous AC power, timed peak, output current and service voltage; MPPT count, voltage, current and short-circuit limits; module, optimizer, receiver, trunk and connector compatibility; DC/AC oversizing and clipping assumptions; battery voltage, protocol and approved models; pass-through versus inverter output; backed-up circuits, transfer, neutral, generator and islanding equipment. AFCI, GFDI, rapid shutdown, disconnects, OCPD, PCS, UL 1741, UL 3741, UL 9540, IEEE 1547 and other listings apply to exact configurations and do not replace adopted NEC, fire access, permit, utility grid profile, interconnection review or permission to operate. Outdoor ratings do not waive thermal derating, sun, snow, water, conduit, structure, clearance, noise and service access. Preserve local controls, installer credentials, app, gateway, cloud, privacy, firmware, offline behavior, warranty, authorized channel, parts and labor. Equipment price excludes the complete array, batteries, gateways, transfer equipment, panels, design, installation, roof work, service upgrades, permits, utility costs, tax and financing. No nameplate, optimizer, MPPT, efficiency, clipping model, production forecast, backup rating, warranty, quote, app or certification guarantees energy yield, savings, bill, uptime, outage performance, permission, fire safety, code approval or service outcome.
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