AC-coupled, no panels
Where they stand, two measures at a time
A single-number ranking hides what is being optimised. Here there are two axes at a time, and the question «which are the best» is answered by those nobody beats on both measures.
On Cost per kWh, further left is better; on Nominal capacity, higher up. The coloured corner, “best zone”, is where both measures are good.
Filled in are the 3 products that no other beats on both measures. They are not «the best»: they are the ones nobody dominates.
Striped, paler points have at least one of the two measures without a verified source.
3 sheets are missing, because they do not state both measures.
The figures behind this chart
| Product | Cost per kWh · €/kWh | Nominal capacity · kWh | Verified |
|---|---|---|---|
| Jackery SolarVault 3 Pro Max AC | 287.70 | 2.52 | Partly |
| EcoFlow STREAM AC Solar Battery | 338.18 | 5.02 | Yes |
| MARSTEK Venus E Mini | 360.77 | 2.01 | Partly |
| MARSTEK Venus E Gen 3.0 | 390.43 | 5.12 | Yes |
| EcoFlow STREAM AC | 468.23 | 1.92 | Yes |
| EcoFlow STREAM AC Pro | 520.31 | 1.92 | Yes |
On Cost of stored energy, further left is better; on Battery life cycles, higher up. The coloured corner, “best zone”, is where both measures are good.
Filled in is the 1 product that no other beats on both measures. It is not «the best»: it is the one nobody dominates.
Striped, paler points have at least one of the two measures without a verified source.
3 sheets are missing, because they do not state both measures.
The figures behind this chart
| Product | Cost of stored energy · €/kWh | Battery life cycles · cicli | Verified |
|---|---|---|---|
| Jackery SolarVault 3 Pro Max AC | 0.08 | 3650 | No |
| EcoFlow STREAM AC Solar Battery | 0.09 | 3650 | No |
| MARSTEK Venus E Mini | 0.11 | 3650 | No |
| MARSTEK Venus E Gen 3.0 | 0.11 | 3650 | No |
| EcoFlow STREAM AC | 0.13 | 3650 | No |
| EcoFlow STREAM AC Pro | 0.14 | 3650 | No |