Usable Capacity and Scalability
- Tesla Powerwall: Offers a fixed usable capacity of 13.5 kWh. Up to 10 units can be stacked for a total of 135 kWh.
- Generac Pwrcell: Has a modular design allowing capacities from 9 kWh to 36 kWh. It can be expanded in 3 kWh increments and supports up to two battery cabinets.
Power Output
- Tesla Powerwall: Provides a continuous power output of 5 kW and a peak output of 7 kW.
- Generac Pwrcell: Offers continuous power from 3.4 kW to 7.6 kW, and peak outputs can range from 4.5 kW to 9 kW depending on the configuration.
Efficiency
- Tesla Powerwall: Has a round-trip efficiency of approximately 90%.
- Generac Pwrcell: Features a higher round-trip efficiency of 96.5%, making it more efficient in energy storage and discharge.
Depth of Discharge
- Tesla Powerwall: Offers a 100% depth of discharge, allowing full use of its capacity without worrying about damaging the battery.
- Generac Pwrcell: Has a depth of discharge of 84%, meaning only up to 84% of its capacity can be safely used.
Coupling Type
- Tesla Powerwall: Uses an AC-coupled system, making it easier to retrofit existing solar systems.
- Generac Pwrcell: Utilizes a DC-coupled system, which typically requires a new solar system installation for optimal integration.
Price
- Tesla Powerwall: Generally priced between $9,000 and $14,000, depending on installation costs and additional components.
- Generac Pwrcell: Can range from $10,000 to $20,000, depending on the capacity and installation complexity.
Warranty
Both systems have a 10-year warranty, but Tesla’s does not include cycle or throughput limitations.
Overall, the Generac Pwrcell excels in efficiency and scalability, while the Tesla Powerwall offers better warranty terms and a higher depth of discharge.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-are-the-main-differences-between-tesla-powerwall-and-generac-pwrcell/
