5 Best Predatorguard Generators For Goats to Stop Predators

There’s nothing quite like the sinking feeling of a morning headcount that comes up short. Predators are a constant pressure for anyone raising goats, turning a peaceful pasture into a source of anxiety. While sturdy physical fences are a start, a determined coyote, bear, or neighborhood dog will often find a way over, under, or through them. This is where the electric fence energizer—the heart of your predator defense—becomes your most valuable tool.

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Securing Your Herd: Electric Fencing for Goats

An electric fence isn’t primarily a physical barrier; it’s a psychological one. A painful, memorable shock teaches a predator that your pasture is not worth the effort. This is far more effective than a simple woven wire fence that a coyote might test relentlessly until it finds a weak spot.

The system is simple in concept. An energizer, or "fencer," sends a high-voltage, low-amperage pulse of electricity down a conductive wire. When an animal touches the wire and the ground simultaneously, it completes the circuit and receives a sharp, unpleasant shock. For goats, their insulating hair means you need a fencer with enough power to get the message through.

Your complete setup will include the energizer, fence wire or electrified netting, insulated posts, and a critical grounding system. Each component must work together. Skimping on any one part, especially the energizer or the ground rods, will compromise the entire fence and leave your animals vulnerable.

Zareba A100LI: Top Solar-Powered Protection

For remote pastures or paddocks far from an outlet, a solar energizer is the obvious solution. The Zareba A100LI stands out as a reliable, all-in-one unit that’s incredibly easy to set up. It combines the solar panel, a 12-volt battery, and the energizer into a single, compact case you can mount on a T-post.

With a 1.0 joule output, this unit is rated for up to 30 miles of single-wire fence under ideal conditions. In the real world, with goats and a moderate weed load, it’s perfect for powering a few acres of multi-strand polywire or a couple of rolls of electric netting. It’s a true "set it and forget it" system for smaller operations.

The main tradeoff is its reliance on the sun. During long stretches of dark, cloudy winter days, the battery’s performance can decline. You have to ensure the solar panel stays clean and free of snow and is positioned for maximum sun exposure. It’s a fantastic tool, but it’s not a magical power source.

Gallagher M1100: Power for Large Pastures

When you have a lot of ground to cover and a serious predator load, you need serious power. The Gallagher M1100 is an AC-powered beast designed for exactly that scenario. Pushing out 11 stored joules, this energizer doesn’t just power a fence; it commands it.

This unit is built for large, permanent perimeter fences on homesteads with 50 to 100+ acres. Its real advantage is the ability to maintain a strong charge even with a heavy weed load touching the wires, which would cripple a smaller fencer. It also features a built-in display with indicator lights that tell you the fence’s voltage and if there’s a fault, saving you hours of walking the fenceline with a tester.

Of course, this power comes with requirements. The M1100 must be plugged into a standard 110V outlet, so it needs to be installed in a barn or weatherproof shed near your fence perimeter. It is also a significant investment. This is not the energizer for a small backyard pen; it’s a professional-grade tool for protecting a large herd across a wide area.

Parmak Magnum 12: Durable All-Weather Solar

Parmak has a long-standing reputation for building tough, American-made energizers, and the Magnum 12 Solar-Pak is a testament to that. This 12-volt, solar-powered unit is a workhorse, known for its exceptional durability and performance in less-than-ideal weather. It’s the kind of equipment that feels like it was built to last a lifetime.

Delivering 1.4 joules, it has a bit more punch than many comparable solar models, making it excellent for dealing with the thick coats of goats and the determination of predators. Its key feature is its low-impedance design, which means it effectively shocks through weeds and brush that might otherwise ground out the fence. It’s a solid choice for rotational grazing systems in areas with lush, fast-growing vegetation.

The Magnum 12 is heavier and bulkier than some other all-in-one solar units, but that heft is a direct result of its robust construction. It’s designed to sit out in the rain, sun, and snow and just keep working. For farmers who prioritize reliability and all-weather performance over sleek design, the Parmak is often the top choice.

Premier 1 IntelliShock 60 for Portability

Rotational grazing is one of the best management practices for goats, and it requires a fencing system that can move with the herd. The Premier 1 IntelliShock 60 is built for exactly this kind of flexible, portable setup. It’s a versatile energizer that can be powered by either a 110V AC outlet or a 12V deep-cycle battery.

This dual-power capability is its greatest strength. You can use it in the barn for a permanent pen, then disconnect it, hook it up to a marine battery, and take it to a remote pasture for a temporary paddock of electronet. With a 0.6 joule output, it has ample power for a few rolls of netting, which is the most common use case for portable fencing.

The IntelliShock 60 is not meant for powering vast, multi-mile perimeters. It is a specialized tool for intensive grazing management. Its portability and adaptability make it an invaluable asset for hobby farmers looking to maximize their forage and keep their goats on fresh ground while ensuring they stay protected wherever they are.

Patriot PE2: A Simple, Reliable AC Energizer

Sometimes you just need a small, secure pen right next to the barn. Whether it’s for kidding season, quarantining a new animal, or keeping a buck separate, you don’t always need a high-powered, expensive energizer. The Patriot PE2 is the perfect solution for these small-scale, close-to-home jobs.

This is a simple, plug-in AC energizer that is incredibly affordable and easy to install. You mount it on the wall, plug it in, and connect your fence and ground wires. With a 0.12 joule output, it’s designed for short, single-wire fences up to a couple of miles in ideal conditions, but in reality, it excels at electrifying a single small paddock or a few strands of wire around a garden.

This is not a predator-proof fencer for a large pasture. Its low power means it won’t handle much weed contact and may not deliver a sufficient shock to a well-insulated predator like a bear. But for keeping your own goats contained in a small, clean area where a mild deterrent is all that’s needed, the PE2 is a reliable and cost-effective choice.

Choosing Joules: Power Needs for Your Goats

When you shop for an energizer, the most important number to look for is its joule rating. Voltage might sound impressive, but joules measure the actual energy and shocking power delivered in each pulse. A high-voltage, low-joule fencer creates a loud pop but delivers a weak, ineffective shock.

For containing goats and deterring predators, you need a low-impedance energizer with a strong joule output. Low-impedance means the fencer can maintain its energy level even when weeds or grass touch the line. A good rule of thumb is to look for a minimum of 1 joule for small setups, and plan for at least 1 joule per mile of fence you intend to power.

Don’t be afraid to oversize your energizer slightly. A shock that is merely annoying can train a predator to be more clever, while a powerfully painful shock creates a lasting psychological barrier. You want the first encounter a coyote has with your fence to be its last. A stronger energizer provides peace of mind, especially during times of high predator pressure like denning season.

Proper Grounding: Key to an Effective Shock

You can buy the most powerful energizer on the market, but it will be completely useless without an adequate grounding system. Electricity travels in a circuit. The pulse leaves the energizer, travels down the wire, goes through the predator’s body into the soil, and travels through the earth back to the ground rods, completing the circuit. If the path back is weak, the shock will be weak.

For a proper ground, you need at least three 6- to 8-foot long galvanized steel ground rods. Drive them fully into the earth, spaced at least 10 feet apart from each other. Connect them in a series using a single, unbroken piece of high-quality ground wire and proper clamps, running the wire from the last rod to the one before it, and so on, back to the ground terminal on your energizer.

Never use rusty rebar, short pieces of pipe, or a single, short rod. These are the most common causes of electric fence failure. In very dry or rocky soil, you may need to add more rods or even run a dedicated ground wire along your fence line parallel to the hot wires. Investing time in a proper ground system is the single most important thing you can do to ensure your fence delivers a powerful, predator-stopping shock.

Ultimately, the best energizer is the one that fits your farm’s unique needs—your power availability, pasture size, and management style. Whether you choose a powerful AC unit for a permanent perimeter or a flexible solar model for rotational grazing, the goal is the same. A well-grounded, high-energy pulse is what stands between your herd and the dangers of the wild, giving you the confidence to know your animals are safe.