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Comparing Energy Storage Battery Systems

Comparing Energy Storage Battery Systems

Want to know what is the best energy storage battery system out there today? Use this handy reference table to compare the facts. These energy storage systems consists of a hybrid inverter to work on or off the grid, a battery, an internal transfer switch, an enclosure to make all wiring connections, and a system management software app. Compare brands like Generac, Tesla, Enphase and SolarEdge. Quickly see the differences in power output, storage capacity and expand-ability. Make an informed decision so you know what you are buying. However, these products are ever-changing, with new models or capabilities being added all the time. We'll do our best to keep up for you.

BRAND generac-pwrcell-logo-200px.jpg  solaredge-logo-150.png enphase-logo-150.png  sol-ark-inverter-company-logo-175.png panasonic-solar-logo-150.png tesla-battery-company-logo-140.jpg
MODEL GENERAC
PWRcell
SOLAREDGE
Energy Hub
ENPHASE
Encharge
SOL-ARK
SA-12K
PANASONIC
EverVolt
TESLA
Powerwall
 SINGLE UNIT            
MAX SOLAR INPUT DC 15 kW 15 kW per module 15 kW 10 kW n/a*
MAX CONTINUOUS POWER AC OUTPUT OFF-GRID
8 kW 6 kW 3.8 kW 9 kW 5.5 kW 5 kW
OFF-GRID STARTING CURRENT AC
41.6A 30A 16A 50A 23A 30A
 BATTERY STORAGE CAPACITY AC  9 to 43 kWh   10 to 32 kWh 3.8 to 40 kWh 11 to > 100 kWh 3 to 40 kWh  13.5 kWh
 EXPANSION            
LOAD MANAGEMENT
Yes No No No No No
INVERTER STACKING No Up to 3 Up to 4 Encharge 10 Up to 8 Up to 3 Up to (10) Powerwall
MAX STACKED CONTINUOUS POWER n/a 15 kW 15.3 kW 96 kW 16.5 kW 48 kW
 MAX STACKED STARTING CURRENT  n/a 90A 64A 320A 93A n/a
MAX STACKED STORAGE CAPACITY n/a 96 kWh 40 kWh 100 kWh 102 kWh 135 kWh
GENERATOR INPUT up to 15kW up to 15kW up to 15kW up to 15kW up to 15kW n/a
OTHER SPECS            
INVERTER MANUFACTURER Generac SolarEdge Enphase Sol-Ark Panasonic Unknown
BATTERY MANUFACTURER Panasonic LG Chem Enphase Varies* Panasonic Panasonic
BATTERY TYPE Lithium Lithium Lithium Any 48V
Lithium or Lead-Acid
Lithium Lithium
LOCATION Indoor / Outdoor Indoor / Outdoor Indoor / Outdoor Indoor / Outdoor Indoor
Indoor / Outdoor
             
INVERTER WARRANTY 10 years 12 years 10 years 10 years 10 years 10 years
BATTERY WARRANTY 10 years 10 years 10 years 5 to 10 years 10 years 10 years
             
  generac-pwrcell-logo-200px.jpg  solaredge-logo-150.png enphase-logo-150.png  sol-ark-inverter-company-logo-175.png panasonic-solar-logo-150.png tesla-battery-company-logo-140.jpg

VIEW KITS
See prices for complete solar kits with Hybrid inverter and battery

Generac solar kits

SolarEdge Kits

Enphase micro-inverter solar kits

Sol-Ark solar kit

Panasonic Evervolt solar kits

Contact Tesla

NOTES

Generac uses optional Smart Management Modules (SMM) to turn loads on or off.

Generac uses individual battery modules that can be combined in a single enclosure. Up to two enclosures can be added for each inverter.

Generac can be installed as a multi-system configuration. Inverters must support separate load panels and must not have load panels outputs coupled. For 200A or larger service.

SolarEdge uses optional Backup Interface unit to connect PV solar inverters, batteries, house and generator.

The Enphase Encharge unit is made of multiple battery packs with IQ8 micro-inverters in a single enclosure.

Enphase uses optional Smart Switch unit to connect multiple Encharge batteries, P solar, the house and a generator.

Multiple Smart Switch units can be used for greater battery capacity.

Sol-Ark inverter works with any 48V battery including brands like
Fortress,
Simpliphi,
Sol-Ark,
Outback,
MK,
Trojan

Sol-Ark also makes a 5k and 8k model inverter.

Panasonic uses individual battery modules that can be combined in a single enclosure. Up to two enclosures can be added for each inverter.

*Tesla is an AC-coupled battery; no direct connection with PV solar panels.

Tesla Backup Gateway required for partial or whole home backup.

SunWatts does not offer Powerwall; contact Tesla for details.


Before starting, you should know how many kilowatts (kW) you need to power your home, and how many kilowatt-hours (kWh) of energy is needed for a typical day. kW is the power output rating; think of it as the size of solar generator needed. While kWh is the amount of energy used over time; it relates to the size of the storage tank you'll need. Learn more at Solar Battery Sizing Simplified.

It is also important to decide if you want whole house vs partial house backup power

NOTE: All product specifications are dependent on manufacturer information and are subject to change without notice.