Indevolt PowerFlex 2000: not sold in the UK

The PowerFlex 2000 is a balcony solar battery from Indevolt, a brand whose main site names Power Genius GmbH in Germany as the company behind it. It gets searched in the UK mostly because of one eFIXX video, filmed before the UK plug-in rules existed. This page sets out what the unit is, what that video showed, and what we found when we looked for it on sale here.

What the PowerFlex 2000 is

One box holding a battery, an inverter and a four-input solar controller, meant to sit outdoors beside the panels. Panels charge it in the day and it feeds your wiring later. From Indevolt's documentation, read on 8 October 2026:

Fully expanded with five packs, that's about 12 kWh, which matches the figure eFIXX gave. eFIXX also said a side socket can stay powered if the mains fails.

Can you buy it in the UK?

Not from Indevolt, as far as we could find on 8 October 2026:

• Indevolt's UK store listed two products, both on pre-sale: the PowerFlex 3000 “plug-in solar battery” and the PFA4000 extended battery. No PowerFlex 2000.
• The PowerFlex 2000 page on Indevolt's main store returned “404 Page not found”, and its product list no longer had the main unit, though it still sold PFA2000 packs.
• Amazon UK returned no results for “Indevolt PowerFlex 2000”, or for “Indevolt”.

We found no UK price for the PowerFlex 2000 and couldn't confirm it was ever sold here. If you see one offered second-hand or by an importer, the rules below still apply.

Indevolt UK and the PowerFlex 3000

Indevolt UK's homepage describes an “all-in-one battery and solar storage system engineered for UK homes” and points to the PowerFlex 3000. Its listing gives “3,000W solar input”, four independent MPPT inputs and “3,000W backup power”. It's on pre-sale, so we can't say when it ships, and prices on a pre-sale can change, so check Indevolt UK's store for the current figure. Like the 2000, it holds a battery, and like the 2000 it had no ENA register record when we checked.

The UK plug-in rule

SI 2026 No. 848, in force since 27 August 2026, lets a plug-in solar device of up to 800 VA go into an ordinary socket. The government's Interim Product Specification says it “does not apply to other technologies including but not limited to … Plug-in battery systems; Plug-in solar PV devices integrated with battery systems”. And registration alone isn't enough: “A device being submitted for registration shall not, in itself, be regarded as demonstrating compliance.”

The PowerFlex 2000 fails both tests. It has a battery, and we found no register record for it. We downloaded every record on the register on 8 October 2026, all device types including energy storage, and searched for Indevolt, Power Genius, PowerFlex, PFA and SolidFlex. Nothing came back. That matters for the electrician route too: a G98 connection can't point to a type-test listing for this unit today.

What the eFIXX video showed

eFIXX, a channel for electricians, published this in June 2026. YouTube labels it as including paid promotion, and the product link in its description goes to Indevolt UK. Indevolt UK's About page lists eFIXX under “independent testing”; given the paid-promotion label, we don't describe it that way. What eFIXX did, in its own words:

1. Loss of mains with a matched load. A 500 W drill on the same socket as the inverter, then the power cut: “It's gone off. So, that worked.”
2. Two generators on one extension lead, the PowerFlex and a separate microinverter: “Yes, the micro inverter's output has shut down.” Extension leads aren't allowed under the UK specification, so this was a misuse test, not an approved setup.
3. An RCD test with generation present. “Push the test and the circuit has tripped.”
4. Shutdown speed on an oscilloscope, exporting 800 W: the output stopped in “just over half a cycle” of the AC waveform.

eFIXX concluded that “even when we try our best to break it, the inverter shuts down when the mains supply is lost”, and gave its opinion that the risks around bidirectional RCDs with this kind of equipment “are overplayed”.

That's reassuring engineering on one unit. It isn't a G98 type test, it isn't a test against the UK specification, and the video doesn't claim the product is legal to plug in here. eFIXX's savings figures in the video are its own estimates, not product data. Indevolt UK also links a review by Renewable Heating Hub, which we haven't reviewed.

A German-market design: the 800 W and 2,400 W point

eFIXX called the PowerFlex 2000 “an integrated unit designed to maximize plug-in solar in Germany”, and said: “In plug-in mode, the output is limited to 800 W. But if the unit is connected to a dedicated fixed circuit, that output can increase to 2,400 W.” It suspected that option “will almost certainly be disabled, locked out, or handled differently” on a future UK version.

Indevolt's documentation backs up the regional split: 800 W by default in Germany and Austria, 2,400 W in France, Belgium and the Netherlands, and no UK default at all. For a UK buyer the setting doesn't change much. The plug-in route is capped at 800 VA and closed to batteries whatever the output, and any fixed installation would go through an electrician.

What to look at instead

• Solar you can plug in yourself. 120 kits were Compliant under Plug-in Solar at the last check of our register tracker. Our shortlist is in the best balcony solar kits.
• A balcony battery you can buy here. The EcoFlow STREAM Ultra X and the Anker Solarbank 4 Pro are sold in the UK and are electrician installs.
• Why batteries are excluded. See the battery rules explainer and our battery storage guide.
• Checking any kit. Our guide to checking a kit is legal walks through the register search.

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