EcoFlow STREAM vs Anker SOLIX: Which Should You Buy in the UK?

We've aggregated reviews, owner feedback, and technical assessments from across the web to give you the clearest possible comparison between the two leading balcony solar systems.

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How we compiled this comparison

This editorial comparison is based on aggregated reviews from YouTube, Reddit, TechRadar, Which?, Trustpilot, and owner forums — not a single test of either product. We've tried to represent what the weight of evidence shows rather than a single reviewer's experience.

Quick Verdict

Choose EcoFlow STREAM if:

• You want the best smartphone app experience
• You want to start without a battery and add storage later
• You're a smart home enthusiast who values AI optimisation
• You want access to the largest UK owner community
• You may want to expand beyond 2 kWh of storage eventually

Choose Anker SOLIX if:

• Maximising solar generation is your primary goal
• You want a built-in 2 kWh battery without paying extra
• You have a south-facing balcony that can use 800W effectively
• You want to spend slightly less upfront with storage included
• You don't care about AI features or smart scheduling

The One Number That Matters Most

EcoFlow STREAM

600W

panel capacity

Anker SOLIX

800W

panel capacity

On a south-facing balcony in summer, that 200W difference can mean approximately 0.3–0.5 additional kWh per day — worth around £20–£35 per year at current electricity prices. Over the warranty period, this could add up to £100–£175 in additional savings.

Full Side-by-Side Comparison

Category	EcoFlow STREAM	Anker SOLIX Solarbank 2
Price (2026)	£949 (no battery)	Wins£899 (2 kWh battery included)
Panel wattage	600W	Wins800W
Battery	Optional — modular 1–5 kWh LFP add-ons	Built-in 2 kWh LFP (Solarbank 2 Pro)
App quality	WinsExcellent — AI optimisation, real-time monitoring, home energy dashboard	Good — functional monitoring, solid data, no AI features
Warranty	5 years	5 years
Setup ease	WinsVery easy — guided app walkthrough	Easy — straightforward but less hand-holding
UK support & community	WinsStrong — large UK user community, extensive online resources	Good — established UK brand but less balcony solar-specific content
Schuko adapter needed?	Yes	WinsYes (UK version includes adapter)
Battery expandability	WinsYes — add up to 5 kWh in 1 kWh increments	No — fixed 2 kWh

What the Reviews Actually Say

On the app experience

Across the review sources we've aggregated, EcoFlow's app wins decisively. Multiple YouTube reviewers who've tested both describe the EcoFlow app as "a generation ahead" of Anker's. The specific features cited most often: the AI discharge scheduling (which automatically shifts battery output to your high-consumption periods), the home energy dashboard integrating solar generation with overall home consumption, and the ability to set export limits and import priorities. Anker's app provides solid monitoring but is described as "functional" rather than smart. If the app experience matters to you, EcoFlow wins clearly.

On the battery question

This is where the comparison gets nuanced. The Anker Solarbank 2 Pro includes 2 kWh built-in — which is genuinely useful storage capacity, enough to cover evening TV, lighting, and device charging from daytime generation. The EcoFlow STREAM base system has no battery, but you can add 1–5 kWh in modular LFP packs. The catch: those add-on packs are expensive (roughly £400–£700 per kWh), so a comparable 2 kWh EcoFlow setup costs significantly more than the Anker. However, the EcoFlow's modularity is valuable if you want to start small and expand — Anker's fixed 2 kWh cannot be upgraded.

On real-world generation

One Reddit contributor ran both systems simultaneously on adjacent south-facing balconies over three summer months and found the SOLIX generated approximately 12% more electricity than the STREAM — less than the theoretical 33% difference from wattage, due to real-world shading, panel angle, and inverter efficiency factors. In financial terms, the extra generation was worth approximately £25 over the three months, or around £70–£90 per year. Whether that justifies buying the SOLIX over the STREAM depends heavily on your priorities — the STREAM offers more back in smart features and battery flexibility.

On UK support and community

EcoFlow has a clear lead on UK-specific resources. The EcoFlow UK community is more established, with more YouTube content, Reddit threads, and forum discussions than Anker SOLIX. For a first-time balcony solar owner, this matters — when you hit a setup question at 9pm on a Sunday, a large community is more valuable than any official support channel. Anker's UK support is good, but the community around the SOLIX is thinner. This gap may narrow as the SOLIX becomes more established in the UK market.

Don't forget the Schuko adapter

Both systems use Schuko plugs, as they're designed primarily for the European market (where balcony solar is already legal and widely adopted). You'll need a UK adapter for either. Neither system includes one as standard, so budget an extra £5–£10 for a UK-to-Schuko adapter — and ensure you use a quality one that can handle continuous load.

Video Reviews & Comparisons

YouTube creators reviewing the EcoFlow STREAM and comparing EcoFlow vs Anker SOLIX systems.

FlytPath — Anker SOLIX vs EcoFlow DELTA Pro direct comparison (102k views)

Solar Surge — Full EcoFlow STREAM balcony solar system review (128k views)

Dork off-grid — Honest EcoFlow Stream owner review: things to know before buying (35k views)

Buy Either System

EcoFlow STREAM

~£949 · Best app · Expandable battery

Purchase links coming soon.

Anker SOLIX Solarbank 2

~£899 · 800W · Built-in 2 kWh battery

Purchase links coming soon.

Want deeper dives? EcoFlow STREAM review roundup · Anker SOLIX review roundup · Best Balcony Solar Kits UK