Side-by-side at every price point. Specs, charging speed, expandability, and our pick for each budget.
Two brands dominate the portable solar generator market: EcoFlow and BLUETTI. Walk into any "best solar generator" list and they hold half the spots. Both build LiFePO4-powered units with solar charging, app control, and UPS switchover.
But they are not interchangeable. The engineering priorities, pricing strategies, and expansion ecosystems are fundamentally different. This guide compares them head-to-head at three price tiers — budget, mid-range, and premium — so you buy the right brand for your needs.
Here is every major model from both brands, side by side. Scan the table, then read the tier breakdowns below.
| Spec | EcoFlow RIVER 3+ | BLUETTI AC2A | EcoFlow DELTA 2 Max | BLUETTI AC200L | EcoFlow DELTA Pro Ultra | BLUETTI EP500Pro |
|---|---|---|---|---|---|---|
| Price | $349 | $199 | $1,599 | $999 | $3,999 | $3,499 |
| Capacity | 286 Wh | 204 Wh | 2,048 Wh | 2,048 Wh | 6,144 Wh | 5,100 Wh |
| Output | 600W | 300W | 2,400W | 2,400W | 7,200W | 3,000W |
| Surge | 1,200W | 600W | 4,800W | 3,600W | 10,800W | 6,000W |
| Battery | LiFePO4 | LiFePO4 | LiFePO4 | LiFePO4 | LiFePO4 | LiFePO4 |
| Cycles | 3,000+ | 3,000+ | 3,000+ | 3,000+ | 3,500+ | 3,500+ |
| Weight | 8.4 lbs | 7.5 lbs | 50.7 lbs | 62.4 lbs | 143 lbs | 168 lbs |
| AC Charge | 56 min (0-80%) | 1.5 hrs | 68 min (0-80%) | 1.5 hrs | 2 hrs (0-80%) | 3 hrs |
| Solar Input | 220W max | 200W max | 1,000W max | 1,200W max | 5,600W max | 2,400W max |
| Expandable | No | No | Up to 6,144Wh | Up to 8,192Wh | Up to 90kWh | Up to ~15kWh |
| App | EcoFlow App | BLUETTI App | EcoFlow App | BLUETTI App | EcoFlow App | BLUETTI App |
| UPS | 30ms | 20ms | 30ms | 20ms | 10ms (Smart Panel) | 20ms |
Under $350. You need a backup that charges phones, runs a CPAP, keeps a mini-fridge cycling, or powers a laptop during outages. Both units here fit in a backpack.
EcoFlow's X-Stream charging is the headline: 0 to 80% in under an hour from a wall outlet. No other unit this small can match that. The 600W output handles blenders, small power tools, and mid-size appliances — double the AC2A's capacity.
The AC2A exists for one reason: get a LiFePO4 power station into your hands for under $200. It charges phones, runs a CPAP overnight, and powers a laptop workday. That's its lane, and it owns it. You're not running a blender on this — but you're not spending $349 either.
Best overall value: BLUETTI AC2A ($199). If $199 is your ceiling, there is no competition — the AC2A is the only LiFePO4 unit under $200. Best performance: EcoFlow RIVER 3 Plus ($349). If you can stretch to $349, the RIVER 3+ doubles the output, adds 40% capacity, and charges in half the time. Worth the upgrade if you need to run appliances, not just charge devices.
The money tier. $1,000–$1,600 buys enough capacity to run a household during a multi-day outage, power a food truck, or go completely off-grid in a van. This is where most buyers land.
On paper, the DELTA 2 Max and AC200L are twins: 2,048Wh capacity, 2,400W output, LiFePO4. The difference is charging speed. EcoFlow's X-Stream fills this unit from 0 to 80% in 68 minutes — twice as fast as the AC200L. If you're a contractor who needs to top off between job sites or a storm chaser who can't afford to wait, that speed matters.
Expandable to 6,144Wh with two DELTA 2 Max Extra Batteries. Lighter than the AC200L at 50.7 lbs. EcoFlow app is smoother and more reliable than BLUETTI's in our testing.
The AC200L is the unit we recommend most often. Same 2,048Wh, same 2,400W output, same LiFePO4 chemistry — $600 cheaper. It charges to 80% in about 1.5 hours (vs 68 minutes for EcoFlow), and expands to 8,192Wh with B300 expansion batteries ($1,299 each but much higher capacity than EcoFlow's).
The MC4 solar input is a real advantage — you can use any third-party panel without adapters. The 1,200W max solar input is also 200W higher than the DELTA 2 Max's 1,000W cap.
Best value: BLUETTI AC200L ($999). $600 savings, same core specs, more expansion headroom, better solar input. Unless charging speed is a dealbreaker, the AC200L is the smarter buy. Best for speed: EcoFlow DELTA 2 Max ($1,599). If you need the fastest recharge — contractors, storm chasers, mobile professionals — pay the premium for X-Stream.
Whole-home backup territory. $3,500–$4,000 buys enough capacity and output to run your house — fridge, router, lights, and (for EcoFlow) even central AC. These are Tesla Powerwall alternatives that ship to your door without an installer.
This is where EcoFlow pulls decisively ahead. The DELTA Pro Ultra outputs 7,200W continuous — more than double the EP500Pro's 3,000W. That's enough to run a 3-ton central AC unit, a well pump, a full kitchen, and every light in your house simultaneously.
The expansion ceiling is absurd: 90kWh with additional battery packs. That's multiple days of whole-home power with solar recharging. The Smart Home Panel ($1,599 separate) provides automatic grid-failover — power drops, the DELTA Pro Ultra kicks in within 10ms. No transfer switch, no manual switchover.
At $3,999, it's only $500 more than the EP500Pro but delivers 2.4x the output. After the 30% federal tax credit, the net cost drops to roughly $2,799.
The EP500Pro is a solid essential-load backup — fridge, router, lights, fans, phone charging. Its 3,000W output handles everything except central AC and heavy motor loads. The built-in wheels make it surprisingly easy to move for a 168 lb unit.
The 20ms UPS switchover keeps sensitive electronics protected. Expandable to ~15kWh with B230/B300 expansion batteries. At $3,499, it's $500 cheaper than the DELTA Pro Ultra — but the gap in output power (3,000W vs 7,200W) is massive.
Best whole-home: EcoFlow DELTA Pro Ultra ($3,999). No contest. 7,200W vs 3,000W is the entire argument. The DELTA Pro Ultra can run your AC. The EP500Pro cannot. If you're buying a whole-home backup, spend the extra $500. After the 30% tax credit, the DELTA Pro Ultra is actually cheaper at ~$2,799 net vs $3,499 for the EP500Pro (which may also qualify — check eligibility). Only consider the EP500Pro if you don't need AC and want a lower upfront cost.
| Category | Winner | Why |
|---|---|---|
| Charging Speed | EcoFlow WIN | X-Stream is 2x faster at every price point |
| Value / Price | BLUETTI WIN | 20-40% cheaper at equivalent specs |
| Raw Power Output | EcoFlow WIN | 7,200W at premium tier vs 3,000W |
| Expandability | EcoFlow WIN | 90kWh max vs 15kWh max |
| Solar Panel Compatibility | BLUETTI WIN | MC4 standard vs proprietary XT60 |
| App Experience | EcoFlow WIN | More responsive, better UI, more reliable connection |
| Whole-Home Backup | EcoFlow WIN | Smart Home Panel + 7,200W = true whole-home |
| Portability | Tie — depends on model. EcoFlow lighter at mid-range, BLUETTI has wheels at premium. | |
| Customer Support | EcoFlow WIN | US-based support, same-day response, larger community |
| Budget Buyer | BLUETTI WIN | AC2A at $199 is unmatched |
Score: EcoFlow 6, BLUETTI 3, Tie 1. EcoFlow wins more categories — but BLUETTI wins the two that matter most to budget-conscious buyers: price and panel compatibility. If money is the primary constraint, BLUETTI is the smarter brand.
Both brands use LiFePO4 batteries that last 3,000+ cycles — roughly 8-10 years of daily use. Both have 5-year warranties. Both are legitimate companies with US-based support operations. You can't go wrong with either brand. The question is whether you're optimizing for performance (EcoFlow) or value (BLUETTI).
It depends on your budget and needs. EcoFlow wins on charging speed (X-Stream charges to 80% in under an hour) and whole-home backup (DELTA Pro Ultra + Smart Home Panel). BLUETTI wins on value — the AC200L delivers 2,048Wh for $999, roughly 40% less than a comparable EcoFlow. Both use LiFePO4 batteries and have 5-year warranties.
BLUETTI is 20-40% cheaper at equivalent capacities. The BLUETTI AC200L (2,048Wh) costs $999 vs the EcoFlow DELTA 2 Max (2,048Wh) at $1,599. At the entry level, the AC2A is $199 vs RIVER 3 Plus at $349.
Not directly. BLUETTI uses MC4 connectors (industry standard), while EcoFlow uses proprietary XT60 connectors. Any MC4 panel works with BLUETTI out of the box. For EcoFlow, you need an MC4-to-XT60 adapter cable (around $15). Both brands accept standard solar voltages.
EcoFlow has a slight edge with California-based support and typically same-day email responses. BLUETTI operates US support from Nevada and averages 1-2 business days. Both handle warranty claims domestically — no shipping to China. Both offer 5-year warranties on LiFePO4 units.
EcoFlow DELTA Pro Ultra — decisively. It outputs 7,200W continuous (runs central AC) vs the EP500Pro's 3,000W (essential loads only). It expands to 90kWh vs ~15kWh. The Smart Home Panel provides automatic grid failover. The DELTA Pro Ultra costs $500 more but delivers more than double the capability. After the 30% federal tax credit, the DELTA Pro Ultra can net around $2,799.
Browse our full guides for each brand with detailed specs and current pricing.
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