Generator's Pwrcell Professional Evaluation (Year 2024)
Generac PWRcell Residential Battery System: A Comprehensive Energy Storage Solution
The Generac PWRcell residential battery system is a scalable, high-capacity energy storage solution designed for optimal solar integration, boasting smart energy management and remote monitoring. This innovative system is equipped to handle demanding residential loads and thrive in harsh environments.
Key Features
The PWRcell system offers several key features that make it an attractive choice for homeowners seeking energy independence and resilience. With a capacity of up to 18 kWh of usable energy in a single cabinet, the system is scalable in 3 kWh increments, allowing for expansion up to 72 kWh of storage.
The system's power output stands at 10 kW continuous power and 15 kVA peak inrush power, capable of supporting large loads such as a 5-ton air conditioning unit. A Smart Disconnect Switch (SDS) ensures automatic transitions of backup power and supports electrical loads up to 200 amps.
Integration with both new and existing solar solar arrays enables the PWRcell to charge the battery directly from solar panels. The system also boasts compatibility with Ecobee thermostats for enhanced energy efficiency and control during outages. Real-time insights, remote monitoring, and control are available through the Generac PWRview app.
Specifications
The PWRcell's specifications are impressive, with an AC Output Voltage for backup of 120/240 VAC. The system's Max Continuous AC Power for a single battery is 9,000 W, with two batteries delivering 11,000 W. The DC Input Voltage Range is 360 - 420 VDC, with an AC Circuit Breaker for backup of 50 Amps. Protections include ground-fault and arc-fault (Type 1 AFCI).
The system's efficiency is noteworthy, with a peak efficiency of 97%, and a CEC weighted efficiency of 96.5%. The operating temperature range is -20°C to 50°C (-4°F to 122°F). The dimensions of the inverter unit are 622 x 489 x 203 mm (24.5" x 19.25" x 8").
Warranty Details
While specific warranty details for the PWRcell system were not found, Generac typically offers robust warranties on their residential energy products. It is reasonable to expect a similar warranty period for the PWRcell system, although this should be confirmed directly with Generac or the installer.
Pricing and Expansion
The estimated price range for the Generac PWRcell is between $10,000 and $20,000, not including installation. A household can accommodate up to two battery enclosures, capping at a total storage of 36 kWh. Expansion of storage capacity can be achieved by acquiring extra battery modules, each installation requiring a professional.
Design and Performance
The PWRcell is a DC-coupled setup with multiple parts, including a battery enclosure, inverter, automatic transfer mechanism, and PV connector. The battery enclosure accommodates several lithium-ion battery modules, ranging from three to six. The PV connector maximizes the efficiency of power production from solar panels and its storage in the battery.
The PWRcell's round-trip efficiency is 96.5%, with a depth of discharge of 84%. The automatic transfer mechanism (ATM) ensures a seamless switch to the backup battery during a power cut. The PV connector is designed to pair with a quick shutdown mechanism linked to the solar panels.
In summary, the Generac PWRcell system is a leading solar battery in the market, introduced in 2019, offering homeowners a reliable, scalable, and efficient energy storage solution.
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