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Savant Power Storage 50 in front of a Power Storage 20

Savant Battery Review Savant Power Storage: Specs and Fit

Savant Power Storage reviewed: PS20 and PS50 capacity, the PS20 inverter, how it scales, solar and generator support, warranty and which homes it fits.

By Adam Zell of Boston Automations · Updated

The short answer

Savant Power Storage is Savant's home battery, sold as the 20 kWh PS20 and the 50 kWh PS50. Savant lists a 12.5 kW inverter for the PS20, systems from 20 kWh up to 500 kWh, support for services from 200 A to 800 A and a 10 year warranty.

Its strength is that it is part of the Savant Power system. The same app that runs the battery also shows and switches each circuit, so during an outage the house keeps what matters on and drops the rest.

What are the Savant Power Storage specs?

Savant Power Storage at a glance, from Savant's published specs
ItemSavant Power Storage
ModelsPS20 (20 kWh) and PS50 (50 kWh)
Inverter12.5 kW (PS20)
System size20 kWh to 500 kWh
ScalingUp to 10 units for 125 kW / 200 kWh; up to ten inverters and ten battery stacks
Service sizes200 A to 800 A
FootprintInverter with 20 kWh stacked is under 26 x 13 inches and under 7 feet tall
SolarDC coupled up to 17 kW per unit, AC coupled up to 12.5 kW
GeneratorHardwired AC standby generators with 2-wire start; not portable generators
Energy modesEco, Power Outage and Storm Watch
Three phaseNot supported
Warranty10 years

Trade press describes the PS50 as an all-in-one inverter and LFP (lithium iron phosphate) battery. Published power ratings for the PS50 differ between sources, so we confirm the exact model and rating on your quote.

What does it do well?

It scales. A single PS20 covers a modest set of circuits, and a large house can stack units well past what one consumer battery offers. Savant's range up to 500 kWh and 800 A puts it in reach of homes that would otherwise need several batteries from different brands.

It works with the rest of Savant Power. Modules in the panel decide which circuits the battery carries, energy scenes switch the house to essentials in an outage, and the battery has a Storm Watch mode alongside Eco and Power Outage. On a normal day Savant says the system can offset peak utility rates.

It brings in other sources. Solar can connect on the DC or AC side, and a standby generator can recharge the battery in a long outage.

What are the limits?

Savant does not support three phase, so it does not suit three-phase buildings. It needs internet on site. It does not work with portable generators. And Savant lists grid transfer in under 70 ms for the PS20, so it is backup that switches over, not an always-on system that conditions every circuit with zero transfer time. Homes that need that should read Savant Power vs RoseWater Energy.

Which homes is it right for?

It fits homes that want battery backup with control over which circuits run, homes adding solar, and larger homes that need more storage than one consumer battery holds. If you already own a Powerwall, Savant can manage it instead. See Savant vs Tesla Powerwall.

Frequently asked questions

How big is a Savant battery?

How big is a Savant battery?

Savant Power Storage comes as the PS20, a 20 kWh battery, and the PS50, a 50 kWh battery. Savant says a system can store between 20 kWh and 500 kWh, and that up to 10 units can be combined for 125 kW and 200 kWh.

Can a Savant battery back up the whole house?

Can a Savant battery back up the whole house?

It can. Savant's compatibility guide says Power Storage supports partial and whole home backup, and Savant says its storage works with services from 200 A to 800 A. How long the house runs depends on the storage you install and which circuits you keep on.

What warranty does Savant Power Storage have?

What warranty does Savant Power Storage have?

Savant lists a 10 year warranty on its storage systems.

Does Savant Power Storage work with a generator?

Does Savant Power Storage work with a generator?

Yes, with hardwired AC standby generators that have 2-wire start and stop. Savant says portable generators are not supported at this time.

Does it need internet?

Does it need internet?

Savant's compatibility guide says the system needs internet on site and recommends a wired Ethernet connection.

How much does Savant Power Storage cost?

How much does Savant Power Storage cost?

Savant battery backup runs $10,000 to more than $100,000, depending on the size of the house and what you want backed up. Savant Power Modules for circuit control typically add $2,000 to $10,000.

Where to go next

Related guides

More Savant Power guides

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