The system integrates a battery, a hybrid inverter and a home energy management system into one device. It supports the integration of additional devices including heat pumps via SG-Ready interfaces. A connection to Tesla’s own wallbox is also planned.
Tesla is expanding its offering in the residential energy storage market with a new three-phase system. The Powerwall 3P system is now available and integrates a battery, hybrid inverter and home energy management system into a single unit.
The new product has a storage capacity of 13.4 kWh and delivers up to 15.4 kW of AC power, with a peak power of 21 kW for one second. This makes it suitable for demanding domestic applications, such as heat pumps or electric vehicle charging, the company said.
Four MPPT trackers are integrated for connecting photovoltaic systems, allowing flexible system design for complex roof layouts. The connected PV generator can reach a maximum power of 20.3 kW. The input voltage ranges from 60 V to 1,000 V, with a maximum input current of 16 A per MPPT and a short-circuit current of 21 A.
The battery capacity can be expanded with additional units. According to the manufacturer, up to four systems can be combined to provide 61.6 kW of output and 94.5 kWh of storage, making the solution suitable for small commercial applications.
The housing is IP67 rated for outdoor installation. A die-cast aluminum housing doubles as a heat sink, and integrated cell heaters enable operation in low-temperature environments.
A home energy management system is included and does not require a subscription. The system uses local processing, with optimization functions running on the device instead of in the cloud. According to the manufacturer, it contains electricity price signals, weather data for predicting PV yields and user consumption patterns to optimize self-consumption. Artificial intelligence is also used in this process, with access to external data sources for weather and prices.
The system is designed to maintain operation during power outages, even without an internet connection. It provides full three-phase backup power and can compensate for unbalanced loads in backup mode.
It supports the integration of additional loads, including heat pumps via SG-Ready interfaces. Compatibility with Tesla’s wall box is planned.
Installation is limited to certified partners. The system is supplied pre-assembled and pre-wired. The 300 lb (138 kg) unit is wall mounted and Tesla offers a special transport dolly as an installation aid, which must be purchased separately.
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