BLUETTI AC300 vs EcoFlow DELTA 3 Ultra

EcoFlow DELTA 3 Ultra portable power station

Pick this if

BLUETTI AC300

Buyers who measure value in watts and watt-hours, not in grams and app screens.

Pick this if

EcoFlow DELTA 3 Ultra

Capacity: 3,072 Wh vs 2,765 Wh
Continuous AC output: 3,600 W vs 3,000 W
List price: $1,399 vs $2,299
Cost per watt-hour: $0.46 vs $0.83

Buyers who want one system to grow from camping into home backup.

Spec by spec

A green arrow marks the better figure on each row. Rows where only one unit publishes a number are shown without a winner rather than guessed.

Metric	AC300	DELTA 3 Ultra	What it means
Capacity	2,765 Wh	3,072 Wh	How much energy the unit stores. Sets how long everything else can run.
Continuous AC output	3,000 W	3,600 W	The largest load the inverter will run continuously, not counting surge.
Weight lower is better	—	72.1 lb	The spec buyers most often regret ignoring.
List price lower is better	$2,299	$1,399	Vendor list price at the time of collection; street prices move.
Cost per watt-hour lower is better	$0.83	$0.46	Price divided by capacity. The fairest single value metric.
Watt-hours per pound	—	42.6 Wh/lb	Capacity you get per pound carried.
Max solar input	2,400 W	3,200 W	Caps how large an array is useful, and therefore off-grid recharge speed.
Warranty	—	60 months	Stated warranty length from the vendor listing.

How each one ranks overall

BLUETTI AC300

#49 of 73 for Best value (Wh per dollar) ($0.83)
#51 of 75 for Most inverter headroom (108 W/100Wh)
#8 of 55 for Highest solar input (2.4 kW)
#55 of 72 for Most output per dollar (1.30 W/$)
#26 of 75 for Best for home backup (63/100)

EcoFlow DELTA 3 Ultra

#18 of 73 for Best value (Wh per dollar) ($0.46)
#18 of 74 for Most portable (Wh per pound) (42.6 Wh/lb)
#40 of 75 for Most inverter headroom (117 W/100Wh)
#3 of 55 for Highest solar input (3.2 kW)
#24 of 72 for Most output per dollar (2.57 W/$)
#20 of 75 for Best for home backup (67/100)
#20 of 75 for Longest warranty (60 mo)
#5 of 27 for Quietest under load (25 dB)

The brands behind them

BLUETTI

The value-and-power buyer who does not mind a heavy box

Best for: Buyers who measure value in watts and watt-hours, not in grams and app screens.

Not for: Buyers who need the lightest possible unit or the simplest possible interface.

Full BLUETTI profile →

EcoFlow

The tech-forward buyer who reads the spec sheet and wants room to grow

Best for: Buyers who want one system to grow from camping into home backup.

Not for: Buyers who want the lowest cost per watt-hour and will never use an app.

Full EcoFlow profile →

Where these numbers come from. Every figure on this page is taken from BLUETTI’s own product listing and is stored with the vendor’s exact wording, reproduced below. We do not estimate missing specs — a field the vendor does not publish is shown as “—” and excluded from rankings. Source: www.bluettipower.com/products/solar-generator-ac300.

Vendor wording for each figure (3)

capacityWh: “3000W, 2764.8Wh, 400W Solar Kit”
acOutputW: “AC300 3000W Solar Generator”
solarInputW: “2,400W Solar Input”

Where these numbers come from. Every figure on this page is taken from EcoFlow’s own product listing and is stored with the vendor’s exact wording, reproduced below. We do not estimate missing specs — a field the vendor does not publish is shown as “—” and excluded from rankings. Source: us.ecoflow.com/products/ecoflow-delta-3-ultra-portable-power-station-3072wh.

Vendor wording for each figure (5)