The VillaGrid comes in two sizes, 5.75 and 11.5 kilowatt-hours (kWh). Two important metrics to keep in mind when comparing the VillaGrid to other home storage options are power and usable capacity.
VillaGrid has a roundtrip efficiency of 98 and 99 percent, depending on the model; this means that for every 10 kilowatt-hours (kWh) of electricity, you put into the battery, you'll receive 9.8 or 9.9 kWh of output, respectively.
Villara Energy Systems, located near Sacramento, California, is part of the Villara family of companies (established in 1947), which has been installing home energy equipment (including solar, batteries, and generators) for about 20 years. In 2021, it launched the VillaGrid, the only 20-year home battery currently available on the market.
If you want to install the VillaGrid as part of a solar-plus-storage system, battery costs are just one part of the equation. A 5 kilowatt (kW) solar energy system costs anywhere from $9,000 to $15,000, depending on where you live and the type of equipment you choose.
The VillaGrid is the industry's first available lithium titanate (LTO) home battery. Most lithium-ion batteries use graphite as their anode (check out this article to learn how batteries work), which is made of carbon and is flammable (though still very safe).
Villara battery technology is similar to other rechargeable batteries, both large and small: as time goes on, the battery loses some of its ability to hold a charge. Think of how the battery life of a brand-new smartphone compares to one that is a few years old.
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