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Anker SOLIX Balcony Solar UK Review 2026
This article contains affiliate links. If you buy through them, we may earn a small commission at no extra cost to you. It does not influence our editorial opinions.
Anker SOLIX is a balcony solar system range from Anker — the established USB and charging brand — built around high-efficiency IBC panels, a 10-year inverter warranty, and the Solarbank 2 all-in-one battery unit that is genuinely one of the most practical solutions for UK buyers who want storage without complexity.
Quick Facts - Products covered: Anker SOLIX RS40P (panels-only kit) and Solarbank 2 E1600 (all-in-one with battery) - UK pricing: RS40P from approximately £600–£800 (panels + inverter bundle); Solarbank 2 E1600 approximately £899–£1,200 - Panel efficiency: Up to 25% (IBC module technology — highest in this market) - Inverter warranty: 10 years - Battery: 1.6kWh LFP built into the Solarbank 2 unit (expandable to 9.6kWh) - Available now? Via Amazon UK and Anker's UK website on the grey market; BSI-certified versions expected July–October 2026
The Anker SOLIX Range: What's in It for UK Buyers
Anker entered the balcony solar market in Europe in 2023 with a single proposition: take the DIY complexity out of adding battery storage to a plug-in solar system.
The standard approach before Anker — and still the EcoFlow approach — is to buy your solar panels and microinverter as one kit, then buy a separate portable power station as a battery, then wire them together with a bypass cable. It works, but it requires two separate products, a specific connection setup, and some configuration.
The Anker SOLIX Solarbank 2 E1600 collapses that into a single outdoor unit: microinverter and 1.6kWh battery in one weatherproof box that mounts on your balcony rail. Solar panels plug into one side; a standard socket cable from the other side connects to your home. No battery bypass cables, no second device.
For UK buyers considering battery storage — and the payback improvement that comes with it — this is a genuinely compelling architecture.
Anker SOLIX RS40P: The Panels-Only Kit
The RS40P is the entry point to the Anker SOLIX range: two high-efficiency panels paired with a microinverter, without the Solarbank 2 battery unit.
Specifications
| Spec | Details |
|---|---|
| Panel type | IBC (Interdigitated Back Contact) monocrystalline |
| Panel wattage | 2 × 445–455W (≈ 890–910W total DC input) |
| Cell efficiency | Up to 25% |
| AC output (inverter) | 800W |
| Microinverter IP rating | IP67 |
| Panel/cable IP rating | IP68 |
| Microinverter warranty | 10 years |
| Panel performance warranty | 25 years (80% output retention) |
| App connectivity | Wi-Fi |
| Monitoring | Anker app |
What 25% Efficiency Means Practically
IBC (Interdigitated Back Contact) cells place the electrical contacts on the back of the cell rather than the front, eliminating the shading from conventional metallic busbars and achieving efficiency levels that standard PERC cells cannot match. Anker's RS40P achieves up to 25% cell efficiency — the highest available in this market segment as of 2026, and meaningfully above the 21–22% of budget panels and the 23% of standard EcoFlow panels.
In practical terms: a 25% efficient 400W panel occupies slightly less physical space than a 22% efficient panel producing the same output. For a balcony where space is limited, this matters.
But it's important not to overstate this. A 400W panel rated at 25% efficiency still produces 400W. The efficiency figure describes how much of the sunlight hitting the panel is converted to electricity — not how much electricity you'll get. If two panels are rated at the same wattage (400W), they'll produce very similar output regardless of whether one is 22% or 25% efficient — the 25% panel is just physically smaller.
UK Pricing and Availability
The RS40P is available on Amazon UK and from Anker's UK website. European pricing for the RS40P bundle (2 panels + inverter) is approximately €999–€1,199 (roughly £850–£1,020). UK pricing is likely to be set around £799–£999 once official UK-certified versions launch.
Currently, units sold in the UK are European-specification CE-marked products. They function correctly on UK electrical systems — 230V, 50Hz is consistent across UK and Europe — but are not yet UK BSI product standard certified.
Comparison with EcoFlow STREAM
The RS40P competes directly with the EcoFlow STREAM 800W bundle. The RS40P's key advantages are a longer inverter warranty (10 years vs EcoFlow's 5 years) and higher panel efficiency (25% vs 23%). EcoFlow counters with a lower price (~£478 vs ~£799–£999 for the RS40P) and the superior EcoFlow app ecosystem.
If budget allows, the RS40P is a genuinely better-specified kit. If you're comparing the RS40P against the EcoFlow STREAM on a strict value basis, the STREAM's significantly lower price is hard to ignore.
Best Balcony Solar Kits UK 2026
Anker SOLIX Solarbank 2 E1600: The All-in-One Battery System
The Solarbank 2 E1600 is Anker's headline product and the most innovative design in this roundup. It integrates a microinverter, a 1.6kWh lithium iron phosphate (LFP) battery, and a smart energy management system into a single outdoor unit.
Specifications
| Spec | Details |
|---|---|
| Battery chemistry | LFP (Lithium Iron Phosphate) |
| Battery capacity | 1.6kWh |
| Battery cycle life | 6,000 cycles (at 80% depth of discharge) |
| Max expandable capacity | 9.6kWh (up to 5 additional battery modules) |
| AC output (to home) | 800W |
| Off-grid output | 1,000W |
| Solar input | Up to 2,400W (4 × MPPT channels) |
| IP rating | IP67 |
| Operating temperature | -20°C to +50°C |
| Warranty | 10 years |
| App | Anker app (iOS and Android) |
| Dimensions | 365 × 160 × 450mm |
| Weight | ~12kg |
How the Solarbank 2 Works
During daylight hours, the Solarbank 2 charges its battery from the solar panels. It simultaneously feeds electricity into your home through the mains socket. In the evening, when panels stop producing, the battery discharges — continuing to feed electricity into your home circuit through the same socket.
The smart energy management system uses a current clamp (clips onto your consumer unit cables) to monitor your home's real-time electricity consumption. It adjusts the discharge rate to match your usage, aiming to keep your imported electricity from the grid as close to zero as possible during discharge.
This is meaningfully smarter than simply plugging a battery into a socket and letting it discharge at a fixed rate. By matching discharge to consumption, self-consumption rates (the percentage of generated electricity you actually use yourself) reach 88–93% according to testing — versus roughly 50–70% for a solar-only system with no storage.
Battery Chemistry: Why LFP Matters
Lithium Iron Phosphate (LFP) batteries are the preferred chemistry for residential energy storage. Compared with the lithium-nickel-manganese-cobalt (NMC) batteries in most smartphones and laptops:
- Safer: LFP cells do not undergo thermal runaway in the same way as NMC. A damaged or overcharged LFP cell vents gases; it does not catch fire or explode.
- Longer life: 6,000 cycles at 80% depth of discharge equates to approximately 16 years of daily cycling. NMC typically achieves 500–2,000 cycles.
- Better cold performance: LFP retains useful capacity down to -20°C — critical for UK winters where temperatures regularly drop below 0°C in northern regions.
The Solarbank 2's LFP battery is a meaningful safety and longevity advantage over any portable power station (typically NMC) used as a battery partner for a panel-only system.
UK Pricing
The Solarbank 2 E1600 (battery unit only, without panels) is listed on Amazon UK at approximately £899. The complete system (Solarbank 2 + 2 × Anker 435W panels) is approximately £1,099–£1,299.
This sits at the premium end of the market. For comparison, the EcoFlow STREAM Ultra (800W panels + 1.92kWh battery) is priced at approximately £949 — slightly cheaper, with more battery capacity, but using NMC chemistry rather than LFP and with a 5-year inverter warranty versus Anker's 10.
Performance Expectations in the UK
A south-facing Anker SOLIX 800W system in London can expect to generate approximately 840–870 kWh/year based on PVGIS modelling for a south-facing 30° tilt installation. The IBC panel efficiency advantage over standard panels is partly offset by inverter efficiency (Anker's microinverter performs at comparable efficiency to the market standard), so the output difference between Anker and a comparable 800W system with standard panels is modest in absolute terms.
At 24.67p/kWh (Ofgem Q2 2026 rate), a south-facing London installation with the Solarbank 2 achieving 90% self-consumption would save approximately:
- Annual generation: ~860 kWh
- Self-consumption at 90%: 774 kWh used
- Annual saving: 774 × £0.2467 = £191/year
Without battery (RS40P alone, 50–60% self-consumption in a typical household): - Self-consumption at 55%: 473 kWh used - Annual saving: 473 × £0.2467 = £117/year
The battery adds approximately £74/year in savings in this scenario, on a battery cost premium of ~£400–£500. That's roughly a 5–7 year payback on the battery component specifically. Whether that's worthwhile depends heavily on when you're at home during the day.
How Much Can You Save with Balcony Solar?
The Anker App
The Anker app is functional rather than exceptional. It shows real-time generation, battery state of charge, and home consumption (with the current clamp installed). Historical data is available. The interface is clean.
Where it falls short of EcoFlow's app: less sophisticated tariff integration (no built-in optimisation for time-of-use tariffs like Octopus Agile), no weather forecast integration, and a smaller community of UK users providing troubleshooting tips.
This gap may close as Anker's UK user base grows. For buyers primarily interested in knowing whether their system is working and how much they're generating, the Anker app is sufficient.
Who Should Buy Anker SOLIX
RS40P (panels-only kit): Buyers who want high-efficiency panels (25%), a 10-year inverter warranty, and a recognised brand name — and are willing to pay the premium over EcoFlow for those features. The RS40P is a well-specified kit that will serve reliably over a long system life.
Solarbank 2 E1600 (with battery): The best choice for buyers who: (a) primarily use electricity in the evenings rather than during the day, (b) want a simpler all-in-one battery solution without buying separate components, and (c) value LFP battery chemistry and long cycle life. It is the best-designed all-in-one battery system in this market.
Who Should Not Buy Anker SOLIX
Price-sensitive buyers: The RS40P costs roughly £300–£500 more than the EcoFlow STREAM for comparable panel output. For buyers where payback period is the priority, that extra cost is hard to justify.
App experience buyers: If seamless software, deep tariff integration, and the best monitoring interface matter most, EcoFlow's app ecosystem is still ahead.
Buyers who want the cheapest complete certified kit: Look at the EcoFlow STREAM or the forthcoming Lidl kit. Anker is a mid-to-premium choice.
FAQs
Q: Is Anker SOLIX available in the UK right now? A: Yes — Anker SOLIX products are available through Amazon UK and Anker's UK website as of April 2026. However, these are European CE-marked products pending UK BSI product standard certification (expected July–October 2026). They function correctly on UK electrical systems but are not yet officially UK-certified.
Q: How does Anker SOLIX compare to EcoFlow for UK buyers? A: Anker has a longer inverter warranty (10 years vs EcoFlow's 5) and higher panel efficiency (25% vs 23%). EcoFlow has a better app, a lower starting price, and a more established UK presence as a government launch partner. For solar-only buyers, EcoFlow is better value. For buyers wanting integrated battery storage, the Solarbank 2 is more elegantly designed than EcoFlow's separate battery approach.
Q: Can the Solarbank 2 power my home during a power cut? A: Yes — the Solarbank 2 E1600 includes a 1,000W off-grid AC output. With the battery charged to full (1.6kWh), you could run a small number of appliances (lights, phone charging, a laptop) for several hours during a grid outage. It is not a whole-home backup solution, but it provides meaningful resilience.
Q: How long does the Solarbank 2 battery last before needing replacement? A: Anker rates the E1600 battery at 6,000 charge cycles at 80% depth of discharge. At one cycle per day, that equates to approximately 16 years — well beyond the practical life of most home installations. LFP chemistry also degrades more gradually than NMC; you would likely still have 80%+ of original capacity after 10 years of normal use.
Q: Is the Anker SOLIX system suitable for renters? A: Yes, with the appropriate landlord permission. The Solarbank 2 is a self-contained outdoor unit that mounts on a balcony rail with adjustable clamps — no drilling or permanent fixings required. When you move, you take the whole system with you. The RS40P panels use similar rail-clamp mounting. Balcony Solar for Renters UK
Q: What's the difference between the Solarbank 2 E1600 and the Solarbank 2 E1600 Pro? A: The E1600 Pro adds a higher-power AC output mode and additional smart energy management features at a higher price point. For most UK residential balcony solar installations, the standard E1600 is sufficient. The Pro version is aimed at users wanting to maximise time-of-use tariff optimisation or integrate with a broader home energy management system.
Q: Does the Anker SOLIX work with any solar panels or only Anker's own? A: The Solarbank 2 and RS40P microinverter accept any standard solar panels with MC4 connectors within the specified wattage range. You are not locked into Anker panels. However, if you want to use the Anker 435W IBC panels for their 25% efficiency, these are only sold directly through Anker's channels or Amazon UK.