EG4 12kPV Hybrid Inverter
The EG4 12kPV turns up to 12000 W of solar into 8000 W of usable household power, charges your batteries and can sell the surplus back to the grid.
Characteristics
- Continuous output: 8000 W (16000 W peak, 0.5 s)
- Solar input: Up to 12000 W, 2 MPPT, 600 VDC
- Battery: 48V lithium or lead-acid, 167 A max
- Weight: 50 kg (110 lb), NEMA 4X enclosure
- All-in-one hybrid: grid-tied, off-grid, sell-back
Detailed overview: EG4 12kPV hybrid solar inverter
The EG4 12kPV is a residential hybrid inverter built for homeowners assembling their own solar storage system. It packs an MPPT charge controller, an inverter/charger and 48V battery management into a single wall-mounted enclosure, promising to work grid-tied, fully off-grid, or selling power back to the local utility.
On the solar side, its two MPPT trackers accept up to 12000 W of panels (15000 W recommended) at up to 600 VDC. That high voltage reduces the wire gauge needed and, in most installations, removes the need for a separate combiner box. On the output side, the 12kPV delivers 8000 W continuous (120/240 V or 120/208 V), with peaks quoted up to 16000 W for half a second, enough to start a compressor or a well pump without stalling.
Battery management covers both lithium and lead-acid chemistries, with charge/discharge current up to 167 A at 48V and closed-loop CAN/RS485 communication with EG4 batteries and many third-party brands. Maximum efficiency reaches 97.5% from solar to grid, and up to 99.9% from solar to battery. The NEMA 4X enclosure, built-in rapid shutdown and arc/ground-fault protection make it a unit designed around US electrical inspection requirements.
Control runs through a plug-in Wi-Fi module and the EG4 app or monitor, with remote adjustment. Up to 10 units can be paralleled to reach 80 kW of combined output, letting the system grow later without a full replacement. Backed by a 10-year warranty, the 12kPV is aimed first at the serious solar DIYer ready to size their own panel array and storage bank, rather than at someone after a turnkey solution.
This is a mainstay of the US DIY residential hybrid inverter market, sold through dealers such as a1solarstore.com and shopsolarkits.com. No direct sale could be confirmed in the UK at the time of writing: the price above is an indicative conversion from US dollars, to be checked before any purchase.
Full specifications
Detailed characteristics
Power and protection
| Output power?Maximum power delivered (for storages with a 230 V output). | 8000 W |
|---|
Solar section
| MPPT controllers?Number of built-in MPPT solar controllers (lets you connect panels facing different directions). | 2 |
|---|---|
| Max solar input?Maximum connectable PV power. | 12000 W |
Connectivity
| Wi-Fi?Remote control and updates over Wi-Fi. | Yes |
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Durability and format
| Weight?Weight of the battery. | 50 kg |
|---|---|
| Dimensions (L × W × H)?Length × width × height, in millimetres. | 285 × 520 × 750 mm |
Availability and warranty
| Warranty?Length of the manufacturer's warranty. | 10 years |
|---|
Related video
Video: EG4 12kPV Review and Test - Still Worth Buying? - Published on 01/04/2025
Our tester's review: Julien De Jurquet
Installing a hybrid inverter yourself sounds daunting, but the 12kPV makes it realistic for anyone who has already handled residential wiring. The high input voltage, up to 600 VDC, genuinely simplifies the cabling: less current to run, and in most layouts no combiner box needed between the panel strings and the unit. In practice, switching between grid, battery and solar happens with no perceptible bump, and production tracking in the EG4 app is clear, even if the interface still targets an experienced audience rather than a casual homeowner. The fan is audible under heavy load, though never bothersome. One real downside: the manual assumes residential electrical knowledge, and a poorly sized panel string can cost you real efficiency. For a household willing to learn, or to bring in an installer for the final hookup, the power-per-dollar ratio remains one of the best in the US residential storage market.
Frequently asked questions: EG4 12kPV hybrid solar inverter
Yes, it can run in solar-only mode with grid sell-back. Without a battery, energy that is not used immediately is simply exported to the grid rather than stored for the evening.
EG4 recommends at least 200 Ah at 48V per inverter, roughly 9.6 kWh usable. In practice, most residential installs target 15 to 30 kWh to cover a full evening.
Yes, that is one of its three operating modes (grid-tied, off-grid, or sell-back), selectable based on the installation and local utility rules.
Mounting the unit is manageable for an experienced solar DIYer, but the final connection to the electrical panel and utility interconnection paperwork almost always require a licensed electrician.
Up to 10 units, for a combined 80 kW of output, with centralized control through the EG4 monitor: a level of scalability rare at this price point.
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Published on 04/09/2026