Every EcoFlow STREAM Model, Compared Honestly

Pros

• +Cheapest entry to the STREAM ecosystem by a wide margin
• +IP67 weatherproof and fanless — completely silent
• +Two MPPT channels, so two panels facing different directions each get optimised independently
• +Output can be software-capped to 800W or 600W in the app to match UK limits
• +Can be added to a STREAM battery later — nothing wasted if you upgrade

Cons

• −No storage — surplus generation is exported to the grid for nothing (most DIY installs can't qualify for SEG payments)
• −Ships with a Schuko (EU) plug — you need a UK adapter
• −App is cloud-dependent; no local-only control

Pros

• +Lowest price for a battery-integrated STREAM unit
• +Lightest of the battery models at 22 kg
• +Same 1.92 kWh LFP cell chemistry and app as the dearer models

Cons

• −No off-grid discharge from the AC outlet — in a power cut, your stored energy is stranded. This is the Max's dealbreaker
• −Only 2 MPPT inputs and 1,000W max solar input — the least room to grow
• −The ~£100 saving over the Pro buys you meaningfully less product

Pros

• +Three MPPT inputs covers most real balcony layouts (e.g. two on the railing, one on the wall)
• +1,500W solar input is plenty for a UK balcony where panels rarely hit rated output anyway
• +Compact and manageable one-person install
• +Supports off-grid discharge, unlike the Max

Cons

• −Only ~£150 cheaper than the Ultra, which adds a fourth MPPT and 2,000W input
• −1.92 kWh fills up fast on a sunny day if you're out at work — expect clipped generation in summer
• −Schuko plug, UK adapter needed

Pros

• +Same 4 MPPT / 2,000W solar front-end as the flagship Ultra X
• +Off-grid AC output for power-cut resilience
• +Modular — stack additional STREAM batteries later if 1.92 kWh proves too small
• +EcoFlow discounts this model hard and often; it's regularly the best value in the range

Cons

• −1.92 kWh is undersized for its 2,000W input — on a good day it's full by lunchtime
• −At full price the gap to the Ultra X narrows enough that the X is the better buy
• −Cloud-dependent app, Schuko plug — the range-wide gripes apply

Pros

• +3.84 kWh — double every other Gen 1 model — actually matches the 2,000W solar input
• +Big enough to make smart-tariff arbitrage worthwhile (charge cheap overnight, discharge at peak)
• +4 MPPT inputs handle four panels in four different orientations
• +Off-grid AC output; expandable further with extra battery units

Cons

• −38.8 kg — this is a two-person lift and a serious object on a small balcony
• −The dearest Gen 1 model, and EcoFlow's pricing swings ±£350 with sales — annoying to time
• −Payback stretches past 8–10 years at typical UK self-consumption rates; buy it for capability, not a spreadsheet win

Pros

• +Pairs with the STREAM Microinverter (or an existing balcony setup) to add storage without rewiring
• +Works with no solar at all — charge on a cheap overnight tariff, discharge at peak
• +Cheapest route to STREAM storage if you already own an inverter and panels

Cons

• −Zero MPPT inputs — buy this thinking it connects to panels and you'll be returning it
• −AC-coupled round trip is less efficient than DC charging on the Pro/Ultra models
• −Only worth it if the price gap to a Pro/Ultra is real on the day you buy