PowerOak BLUETTI

Name: PowerOak BLUETTI
Brand: PowerOak

7.7 kWh · 5.76 kW · Lithium Iron Phosphate

UL 9540UL 1741 SBCEC listed · Nov 12, 2025

Overview

CEC Energy Storage System List

BLUETTI: 7.7 kWh nameplate energy; 5.76 kW continuous; lithium iron phosphate.

CEC Energy Storage System List

NLR PVWatts v8 · Cali-Graf calculation · CEC Energy Storage System List

Solar array size that refills the battery from empty in one average day, before the home uses any of it (NLR PVWatts v8, 20° south roof).

CEC Energy Storage System List

CEC Energy Storage System List

UL 9540 certifies the whole storage system; UL 9540A is the fire-propagation test that fire codes ask for indoors and near walls.

CEC Energy Storage System List

UL 1741 SB (IEEE 1547-2018)Yes
UL 1741 SA (Rule 21)Yes
CSIP (IEEE 2030.5)Yes (with conditions)
Anti-islanding method groupsGroup 1 Anti-Island8, Group 2a Anti-Island8, Group 2c Anti-Island8
JA12 declaration (Title 24)Yes
JA12 control strategiesBasic, TOU, Advance DR
Last CEC updateApr 1, 2026

CEC Energy Storage System List

Battery	Energy	Continuous power	Chemistry	Warranty	SoCal permits
Villara Energy Systems VillaGrid	5.8 kWh	8 kW	Lithium Titanate Oxide	20 years	—
Villara Energy Systems VillaGrid	5.8 kWh	8 kW	Lithium Titanate Oxide	20 years	—
SolarEdge Home Battery	9.7 kWh	5 kW	Lithium Ion	10 years	677
APsystems (Altenergy Power System) APbattery	5.2 kWh	5 kW	Lithium Iron Phosphate	—	—
FOXESS ECS4000-H2	10.7 kWh	5.76 kW	Lithium Iron Phosphate	—	—

Same segment, similar capacity; each row from the same sources.

How much energy does the PowerOak BLUETTI store?

7.7 kWh nameplate, per the California Energy Commission list.

Is the BLUETTI UL 9540 certified?

Yes — the CEC list shows UL 9540 certification (certified by sgs).

California Energy Commission — Energy Storage System List, data as of Oct 7, 2026. Manufacturer-reported values confirmed by CEC against certificates.
NLR (formerly NREL) — PVWatts v8, NSRDB PSM v3 typical-year weather for Los Angeles, Palmdale, Riverside, Santa Clarita, Chula Vista, Huntington Beach.
Cali-Graf calculations — formulas and inputs are shown next to each calculated value (efficiency from area, temperature-corrected voltages, string sizing, energy estimates).