EcoFlow · PowerRock series · Power Station Arena coverage · IFA Berlin 2026
A 4 kW, 3,072 Wh jobsite power station in a sealed metal body with a built-in RCD, aimed at the European contractor who cannot run a combustion generator.
EcoFlow announced the PowerRock 4000 at IFA Berlin on September 4, 2026 as an industrial portable power station: 4,000 W continuous at 230 V, a 3,072 Wh pack, a surge ladder EcoFlow publishes in full — 7.2 kW for up to 100 s, 9 kW for up to 10 s, 10 kW for 20 ms — a 30 mA residual-current device built in, an all-metal IP65 housing inside a roll cage, 38 kg, and a three-year warranty. It charges from mains, a vehicle alternator or a generator, and not from solar. EcoFlow calls it launched across Europe, but that means announced: the buy button says “Coming soon”, no EcoFlow store lists it, and orders go through its sales team, and distributor rollout is due from November 2026 in 26 named countries that do not include the UK. No US launch has been announced. No price has been published in any currency, and neither have the cell chemistry, cycle life, socket standard, any USB or DC output, or any UPS behaviour.
Reporting and analysis by Gunner GustafsonAnnounced Sep 4, 2026Updated Sep 8, 2026
Photo: EcoFlow · product render, from its IFA 2026 page · numbered labels are ours
The short answer
Announced, not yet on sale. No price, no ship date, no outlet list — yet.
5 of the 27 specs below are still blank — price and cell chemistry among them. Our read on the product is below, and so are the units you can buy today.
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01 · What was announced
Announced September 4, 2026 at IFA Berlin 2026. The framing below is ours; every figure in it is graded in the ledger that follows.
EcoFlow’s own framing is the buyer’s real problem: temporary site power means a permit, an electrician and a wait measured in weeks, and a combustion generator is restricted in dense urban areas, unsafe indoors and impossible below ground. The PowerRock 4000 is EcoFlow’s answer for that site — its placard calls it an industrial portable power station — and it is sold like site equipment, not like a DELTA: not through EcoFlow’s store but through enterprise sales now and, from November 2026, through professional electrical, hardware, building-materials and tool distributors and rental partners across 26 European countries.
Mechanically it is a 3,072 Wh pack behind a 4,000 W, 230 V inverter in an all-metal IP65 housing with a roll cage, at 38 kg. Three things separate it from the consumer units that share its numbers. The residual-current device is built in — 30 mA detection, cut-off in under 300 ms — which EcoFlow says removes the inline RCD modules European sites otherwise hang off every distribution board, and which it calls an industry first by its own assessment. The surge is published as a ladder with times and temperatures rather than a single peak. And the inputs are a site’s inputs: 220–240 V mains at up to 16 A, a vehicle alternator at 42–60 V DC, or a generator — with solar explicitly not supported.
What EcoFlow has not said is a long list. No price in any currency. No order date beyond “coming soon” and a November distributor rollout. No cell chemistry, no cycle life, no socket standard for the two AC outlets, no word on any USB or 12 V output, and no UPS or pass-through claim. The UK is not among the 26 launch countries and no US launch has been announced; the only product pages are German and French.
02 · Specs
Everything known so far, line by line, so you can tell which numbers are firm enough to plan around. Each figure is marked EcoFlow-published, and blanks are blank on purpose: if you came for the price, you should see that we looked rather than find a guess.
EcoFlow calls September 4 a European launch, but its own FAQ says the unit is not sold on its website, and no EcoFlow store listed it on September 8, 2026.
EcoFlow’s phrase is “the high-voltage version” — a description of the 230 V unit that is launching, not an announcement of any other. The only product pages are German and French.
The press release stops at the 7.2 kW tier; the 9 kW and 10 kW tiers are on EcoFlow’s own spec sheet and FAQ. EcoFlow sizes the 7.2 kW tier to carry a welding machine through one full rod.
The press release rounds it to “3 kWh”.
No expansion battery and no DC battery port is announced. “Expandable” here means a second PowerRock on a mains lead.
The spec sheet writes both as ceilings (≤ 38 kg, ≤ 40.5 kg).
EcoFlow’s own product photo labels the four sockets AC CHARGE 16A MAX, ALT CHARGE 20A MAX and two AC OUTPUT 16A MAX — so there are two outputs, each capped at 16 A. It does not say whether they are Schuko or CEE. At 230 V, 4,000 W is about 17.4 A, so the full rating needs both sockets, not one (our arithmetic).
EcoFlow’s two documents disagree by one minute; we print both. No charge time is published for the alternator or generator paths.
Published as a current limit, not a wattage; EcoFlow states no watt figure and we do not derive one.
There is no PV row on the spec sheet. Unusual for the category; do not assume otherwise.
Quoted at full load, which is unusually honest and makes it non-comparable with the sub-30 dB figures makers quote at a few hundred watts.
Storage −10 °C to 45 °C, dry and sheltered; EcoFlow advises against permanent outdoor storage.
EcoFlow’s own caveat on the IP65: not to be run in the rain, pressure-washed or immersed, and fully dry before switch-on. The drop test’s faces, orientation and count are not published.
EcoFlow calls it an industry first for the category — by its own footnote, its assessment of publicly available product information — and says it removes the need for separate inline RCD modules on European sites. It works only with earthing mode enabled in the app and a reliably earthed plug (EcoFlow’s examples: CEE 7/4 or CEE 7/7). Also listed: over-voltage, overload, over-temperature, short-circuit, low-temperature, under-voltage and over-current protection.
IEC 62040 here is a safety standard the unit was tested to, not a UPS mode or switchover claim — EcoFlow makes none. The compliance block appears on the German spec page only.
From the earlier of delivery or purchase date; without proof of purchase, from the manufacturing date in the serial number.
From EcoFlow’s IFA stand wall only — absent from the press release and from ecoflow.com. Test conditions not published.
03 · Our arithmetic
EcoFlow has published no runtimes and no charging-circuit requirement. These are our estimates from EcoFlow’s figures, and they are labelled as our analysis everywhere they appear.
| Load | Base pack · 3.07 kWh |
|---|---|
| 500 W — Lighting, chargers and a radio | 5.2 h |
| 1,500 W — One 15 A corded tool at full draw | 1.7 h |
| 3,000 W — Two tools running plus lighting | 52 min |
| 4,000 W — The full continuous rating | 39 min |
Assumes 85% of rated capacity reaches the load — the same planning constant our comparison engine uses for every station. Real runtime at 4.0 kW will also depend on how the pack derates in heat, which nobody has measured yet.
Our analysisWhat the charging claims imply
0→80% of a 3.07 kWh pack is 2,458 Wh in 48 minutes: an average of about 3.1 kW of AC input, which is comfortably inside an ordinary 230 V / 16 A outlet.
AC to 80% is 48 minutes in EcoFlow’s press release and 49 in its own FAQ; both say 60 minutes to full. The other ways in are a vehicle alternator (42–60 V DC, 20 A max) or a generator — not solar, which EcoFlow states is not supported.
Our analysis Surge headroom
7,200 W peak is 1.8× the continuous rating. Consumer stations run 1.5–2×, which is why a 3,600 W unit can stall on a compressor start. What decides real-world starts is how long the peak is held — the one surge number EcoFlow has not published.
Good to knowEvery estimate above updates automatically if EcoFlow revises a published figure; nothing here is typed in by hand.
04 · Our take
Analysis by the Test Desk — not a summary of EcoFlow’s release or anyone else’s coverage. Every comparison figure below comes from the named maker’s own page.
Start with the number EcoFlow already sells. 3,072 Wh is the DELTA 3 Ultra’s pack to the watt-hour, and that unit is on sale today with a 3,600 W inverter at 72.1 lb, and it charges from solar. So the PowerRock’s case cannot rest on capacity, and only barely on output — 4,000 W against 3,600 W. What the extra weight (83.8 lb against 72.1 lb) and the wait buy is everything around the pack: an all-metal IP65 housing in a roll cage with a 1 m drop claim, a 30 mA residual-current device that trips in under 300 ms, an alternator input, peaks rated in seconds rather than a single number, and a three-year warranty. Judge it on those lines, because the pack is not new.
The surge spec is the best thing on the sheet, and almost nobody has printed it. The press release stops at 7.2 kW; EcoFlow’s own spec page goes on: 7.2 kW for up to 100 s at 25 °C or 60 s at 35 °C, 9 kW for up to 10 s at 35 °C, 10 kW for 20 ms. A ladder with times and temperatures is what tells you whether a motor starts — a motor’s start is measured in seconds, not milliseconds, a welder’s run lasts the length of a rod, and a summer site is not 25 °C — and a single peak figure answers none of that. BLUETTI’s Pioneer 5000, announced the same day for the same buyer, prints 18 kW and no duration at all. The bigger number is not the better spec until BLUETTI says how long it is held; until then the PowerRock is the only one of the pair whose surge you can size a tool against.
Then the line most readers will fill in wrongly. The PowerRock does not charge from solar: EcoFlow says so in as many words, and the spec sheet has no PV row. It refills from 220–240 V mains at up to 16 A, from a vehicle alternator at 42–60 V DC and up to 20 A, or from a generator, and EcoFlow publishes a charge time only for mains. For a site that is a coherent choice — the pack is meant to be filled overnight in the yard or in the van between jobs, not from a panel leaning on a fence — but it is the opposite of what the category has trained buyers to expect, and it means a site with no mains, no vehicle and no generator has no way to top the unit up at all. If your work is remote, EcoFlow’s own DELTA 3 Ultra keeps this pack and adds the panel input.
EcoFlow’s stand wall gave two runtimes worth a minute’s arithmetic, which is ours. A breaker at 2,200 W for about 1 h 14 min draws roughly 2,700 Wh, about 88% of the 3,072 Wh pack — plausible for a tool held near flat out. A cut-off saw at 2,700 W for about 1 h 7 min would need about 3,000 Wh, 98% of the pack, which no inverter delivers; read that one as 54 cuts with the saw spinning down between them, not 2,700 W held for an hour. Our flat 85%-usable planning figure gives 1 h 11 min at a continuous 2,200 W and about 58 min at 2,700 W. The conditions behind EcoFlow’s two figures — ambient, tool, duty cycle — are not published, and neither figure appears anywhere but the stand.
Wait or buy? If you are in one of the 26 launch countries and the job is indoor, below ground or noise-restricted — the site where a combustion generator is not allowed and an inspector will ask about residual-current protection — the PowerRock is built for exactly that, the RCD is aimed at exactly that inspector, and the sensible move is to register with EcoFlow’s enterprise channel and wait, because nothing about it can be priced yet. Everywhere else there is nothing to wait for: the UK is not on the list and no US launch has been announced. And if the problem is energy and output rather than sealing and compliance, the answer is already on the shelf — the DELTA 3 Ultra above, or BLUETTI’s Apex 300, which weighs what the PowerRock weighs, pushes 3,840 W and takes solar. Two things would change our read: a published price, and a socket panel that turns out to be CEE 16 A rather than domestic, which would make this site power rather than a very rugged power station.
The story behind the launch is that two makers opened the same category in one week. The Pioneer 5000 and the PowerRock 4000 were announced on the same day at the same show, for the same European contractor and rental yard, and they answer the brief differently. BLUETTI went bigger and wheeled: 5 kW, a 5.12 kWh pack, expansion, and a bare 18 kW peak. EcoFlow went sealed and carried: 4 kW, a 3,072 Wh pack, an RCD, and a peak spec written out in seconds. Neither has a price. The carry-on incumbent both are measured against, Instagrid’s ONE max, is 2.1 kWh, 3.6 kW and 20 kg with IP54 — so EcoFlow’s answer to it is more energy, a little more continuous power and a better ingress rating at 38 kg against 20 kg, and BLUETTI’s is to change the question with wheels. Which answer the yards prefer will turn on the two numbers nobody has published: the price, and the length of BLUETTI’s 18 kW.
The field it is entering
The consumer alternatives further down are what a shopper can buy this week. The units below are the category EcoFlow is actually walking into — the ones a rental yard already stocks. Figures from each maker’s own product page; the PowerRock 4000’s from the ledger above.
| Unit | Continuous | Peak | Pack | Weight | Sealing |
|---|---|---|---|---|---|
EcoFlow PowerRock 4000 Announced · not on sale — Weight EcoFlow-published. | 4,000 W | 7,200 W | 3.07 kWh | 3,883.8 kg | IP65 |
Instagrid ONE max The European jobsite carry-on — Two-thirds of the capacity at about half the weight, a lower ingress rating, and an 18 kW peak on a convention that cannot be lined up against EcoFlow’s timed tiers. · maker page | 3,600 W | 18,000 W | 2.1 kWh | 20 kg | IP54 |
BLUETTI Pioneer 5000 The wheeled E-Generator announced the same day — More of everything on wheels, and an 18 kW peak with no published duration — EcoFlow publishes all three of its tiers. · our coverage | 5,000 W | 18,000 W | 5.12 kWh | — | IP65 · IK10 |
05 · Buy today
Same capacity band, shipping now, with published outlet lists and prices we read twice a day. Bars share one scale with the announced unit at the top; each card links to a head-to-head we have adjudicated.
Reference · not on sale
38 kg (83.8 lb) net; 40.5 kg (89.3 lb) packed (EcoFlow-published) · Not yet published
EcoFlow
$1,399 listed · 72 lb
Our default answer for anyone outside the 26 launch countries or whose work is remote: the same 3,072 Wh pack from the same maker, on sale today — 3,600 W instead of 4,000 W, 72.1 lb instead of 83.8 lb, and a solar input the PowerRock does not have — and what you give up is the sealed metal body, the RCD and the timed surge tiers.
EcoFlow
$2,799 listed · 112 lb
If the 4,000 W is the number you came for, we’d buy it here today: EcoFlow’s shipping 4,096 Wh unit carries more pack than the PowerRock, in a consumer housing without the IP65 body, the roll cage or the RCD.
BLUETTI
$1,499 listed · 84 lb
The one we’d choose if the PowerRock’s weight is acceptable but its wait is not: 83.78 lb carrying 2,764.8 Wh, 3,840 W and solar, shipping now, giving up a little pack, the IP65 metal body and the built-in RCD.
Anker
$1,500 listed · 92 lb
The PowerRock’s 3,072 Wh and 3,600 W in Anker’s shipping unit — our capacity-and-output match for the buyer who, on reflection, never needed the roll cage, the RCD or the alternator input.
Anker
$2,200 listed · 132 lb
More of both — 3,840 Wh and 6,000 W continuous — and the one we’d steer you to if the problem was ever headroom rather than a hose-down; it is a home unit, so the IP65 body and the RCD are what you give up.
Jackery
$1,399 listed · 60 lb
The lightest way we know to buy the PowerRock’s exact 3,072 Wh — 59.52 lb and 3,600 W, shipping — and our pick for carrying that energy up stairs, at the cost of every jobsite feature the PowerRock’s extra weight pays for.
06 · The line
EcoFlow’s large units have so far been DELTA-family consumer housings sold through its own store; the PowerRock is the first one sold through trade distributors instead.
4,096 Wh · 4,000 W
EcoFlow’s 4 kW consumer flagship — the PowerRock’s continuous rating, in a house.
$2,799 listedCompare →
3,072 Wh · 3,600 W
The PowerRock’s 3,072 Wh pack in EcoFlow’s consumer housing, with solar.
$1,399 listedCompare →
3,072 Wh · 3,600 W
Consumer DELTA-family housing: no ingress rating, no RCD.
$1,599 listedCompare →
3,600 Wh · 3,600 W
Consumer DELTA-family housing: no ingress rating, no RCD.
$1,899 listedCompare →
For the whole EcoFlow range as it stands today, see our EcoFlow guide; for the two current units closest to this one in role, the DELTA 3 Ultra and Apex 300 side by side.
07 · Fit
Read from what EcoFlow chose to announce and what it chose to leave out.
08 · Questions
Short answers, each with its own link.
No. EcoFlow announced it at IFA Berlin on September 4, 2026 and calls that a European launch, but its own buy panel reads “Coming soon”, no EcoFlow store lists it, and enquiries go to enterprise sales. Distributor rollout across 26 European countries is due from November 2026. We update this page and email the alert list when that changes.
Not published — in any currency, by EcoFlow or by any distributor — and there is no anchor to estimate from, so we do not. For reference only: EcoFlow’s own EcoFlow DELTA 3 Ultra carries the same 3,072 Wh pack at $1,399 today, without the sealed body or the RCD.
No. EcoFlow states solar charging is not supported. It charges from 220–240 V mains at up to 16 A, from a vehicle alternator at 42–60 V DC and up to 20 A, or from a generator. Mains to 80% takes 48 minutes by the press release or 49 by EcoFlow’s FAQ; 100% takes 60 minutes in both. No time is published for the alternator or generator paths.
Neither has been announced. The first wave is 26 European countries and the UK is not among them; no US launch has been announced, and EcoFlow lists no UL, ETL, FCC or UKCA mark. It is a 230 V / 50 Hz unit.
Our estimates at 85% usable capacity: about 39 minutes at the full 4 kW, 1 h 11 min at 2,200 W, 1 h 44 min at 1,500 W and 5 h 13 min at 500 W. EcoFlow’s stand wall claimed about 1 h 14 min for a 2,200 W breaker and 1 h 7 min for a 2,700 W cut-off saw making up to 54 cuts; the conditions behind those are not published.
Same 3,072 Wh pack. The EcoFlow DELTA 3 Ultra, at $1,399, gives you 3,600 W, 72.1 lb, solar charging and a unit you can order today. The PowerRock gives you 4,000 W, an IP65 all-metal body in a roll cage, a built-in 30 mA RCD, surge tiers rated in seconds, an alternator input and a three-year warranty, at 83.8 lb, with no price and no order date.