Electric Fence Energizers: Reliable Power for Every Paddock and Field

Electric Fence Energizers: The Heart of Your Electric Fence

Without an electric fence energizer, an electric fence is just wire and posts. The energizer is what sends short, powerful pulses along the conductor, and horses, cattle, sheep and goats quickly learn to respect them. How strong it needs to be depends on the length of the fence, the vegetation along it and the type of livestock. When choosing the power source, what matters most is where your field is and whether there is mains power nearby.

Battery, Mains or Solar

If there is a socket within reach, a 230V mains energizer is the easiest option because it runs without battery changes. On remote land, 9V energizers with a dry battery work for weeks with little attention, while 12V energizers on a rechargeable battery deliver more power for long fences. Dual-power units switch between battery and mains, and solar energizers recharge their battery during the day. Models with an app send the fence voltage straight to your phone.

Choosing the Right Output

As a rule of thumb, the longer the fence and the heavier the vegetation, the more pulse energy the energizer needs so that enough voltage still reaches the far end. Sheep with thick fleece and wildlife usually need a higher voltage than horses or cattle. Just as important is good earthing with several earth stakes, because even a powerful energizer achieves little if the current cannot flow back cleanly.

Frequently asked questions

How many volts does an electric fence for horses need?
For horses, a few thousand volts are usually enough, and around 2,000 to 3,000 volts at the weakest point is a common guideline. What counts is that the voltage still reaches the end of the fence. Check it regularly with a fence tester.

Which electric fence energizer is right for me?
The key factors are the power source, the length of the fence and the type of animal. With a socket nearby, a mains unit is the natural choice; without one, go for a battery or solar energizer. If there is a lot of vegetation, it is worth choosing one power class higher.

Can I connect two energizers to one fence?
No, only one energizer should ever run on a fence. Two units interfere with each other and can become dangerous. Divide long fences into separate sections, each with its own energizer.