Zareba 30 Mile Solar ESP30M-Z
For remote pastures where a small solar unit is too weak: it runs a long cattle fence from its own panel and battery.
Amazon $299.99$299.99
The Zareba 30 Mile Solar ESP30M-Z rates 3.4 among battery and solar electric fence energizers; the Gallagher M120 rates 2.8 among plug-in ones. The Gallagher M120 costs $165 less ($134.99 vs $299.99).
Gallagher M120
#12 in Plug-inFull review
A small, well built plug-in charger for paddocks and small pastures, best when the long warranty matters more than raw output.
Amazon $134.99$134.99
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different power source classes (battery and solar and plug-in), and each is scored against the reference points for its own class, so a rating says how well each does among its own power source peers. How we rank explains each factor.
| Factor weight | Zareba 30 Mile Solar ESP30M-Z | Gallagher M120 |
|---|---|---|
| Overall rating | 3.4/5 | 2.8/5 |
| Value 35% | 37 $599.98 per joule ($299.99, 0.5 J output) | 16 $281.23 per joule ($134.99, 0.5 J output) |
| Output 25% | 53 0.5 J output | 20 0.5 J output |
| Warranty 25% | 50 2-year warranty | 100 3-year warranty |
| Lightning cover 15% | 100 warranty covers lightning damage | 0 lightning damage not covered |
Specifications
| Zareba 30 Mile Solar ESP30M-Z | Gallagher M120 | |
|---|---|---|
| Output | ||
| Power | Solar | Plug-in (110 V) |
| Output energy | 0.5 J | 0.5 J |
| Stored energy | - | 1.2 J |
| Rated fence length | 30 miles | 15 miles |
| Rated area | - | 60 acres |
| Peak voltage | 7.8 kV | - |
| Low impedance | Yes | - |
| Build | ||
| Battery | 12 V | - |
| Solar panel | 5 W | - |
| Lightning cover | Yes | No |
| Warranty | 2 years | 3 years |