The energizer is the heart of every electric fence system — it turns mains, battery, or solar power into the short, high-voltage pulses that deter animals safely. Browse mains, battery, and solar models sized for smallholdings through to full plantation perimeters.
An energizer (also called a fence charger) takes power from a mains supply, a 12V battery, or a solar panel and converts it into a pulsed high-voltage output, sent along the fence wire roughly once per second. That pulsed design — rather than a continuous current — is what makes an electric fence shock startling and memorable to an animal without being dangerous.
The right energizer depends on three things: how long your fence line is, how many wire strands you're running, and how much vegetation load the fence carries (green vegetation touching a live wire bleeds off charge, so a longer or weedier line needs more joules to stay effective). As a rough starting point, small paddocks and short boundaries need less output than multi-kilometre plantation perimeters or wildlife-deterrent fences aimed at wild boar or elephants.
Use the energizer sizing tool to get a joule recommendation from your fence length and animal type, or read How Many Joules Do I Need? for the full explanation.
An energizer alone doesn't make a working fence — it needs fence wire, insulators to keep the live wire off posts, and a proper earthing kit to complete the circuit. A fence tester is worth keeping on hand to confirm output after installation and during routine checks.
Explore energizers from Pro Fence, StarLite, StarForce, and our authorised dealer brands on the Brand Centre, or jump straight into Quick Order to build a matched system from your fence length and application.
