Generac
Generac PWRcell 2 Home Battery System
$20,000.00
Reference price as of 2026-08-23 — check the manufacturer for the current price and stock.
Homeowners already invested in the Generac ecosystem (e.g. pairing with a Generac standby generator) who want a modular battery that scales one module at a time.
Full spec sheet
| Key specs | |
| Brand | Generac |
| Price | $20,000.00 |
| Capacity | 9,000 Wh |
| Continuous output | — |
| Peak / surge output | — |
| Weight | — |
| Battery chemistry | NMC lithium-ion |
| Dimensions (L x W x H) | — |
| Includes solar panel | No |
| Use cases | Home |
| Other verified specs | |
| Max continuous power | Up to 11.5kW, but requires two PWRcell 2 Battery Cabinets with at least 7 battery modules combined (Generac official spec) — a single base cabinet outputs less |
| Max scaled capacity | Up to 72kWh by connecting multiple cabinets |
| Not an Amazon product | This is not sold through Amazon — the button above links to Generac's official site, and WattReady earns no affiliate commission on it |
| Price note | $20,000 is an approximate installed cost for the base 9kWh kit per independent cost-guide sources — get a local quote before budgeting around this number |
| Source | generac.com official PWRcell 2 product page + independent cost guides |
Pros
- 9-18kWh per cabinet, modular — add battery modules as budget allows rather than buying full capacity upfront
- Native ecobee smart thermostat integration for in-home monitoring
- Can recharge from a Generac generator as well as solar or grid power, unlike battery-only systems
- 10-year warranty covering 4,000 cycles and 36 MWh of throughput
Cons
- Not sold on Amazon — installed-only through Generac dealers, so pricing is quote-based, not a fixed checkout price
- Base 9kWh kit runs roughly $20,000 installed — expanding to 18kWh+ adds $1,900-$2,500 per additional 3kWh module
- Uses NMC lithium-ion cells rather than LiFePO4 — less thermally stable than the LFP chemistry most competitors on this page use
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