Electric fences are often of interest to people
who live in rural areas as a part of a home security plan.
Electric fences are usually used to contain livestock, but they
can also be used to keep wild animals off your property. They
can also be used to keep pests (or pets) out of garden areas.
Electric fences used in residential settings should have
low-output chargers. Electric fences are typically powered by
normal A/C outlets, but it is also possible to buy solar
energizers for your fence. Solar energizers convert and store
solar energy to power the fence.
It is also possible to buy electric pet containment fencing.
Electric pet containment fencing doesn't actually involve
putting up a fence at all. All you do is lay underground wire.
These kinds of systems consist of a transmitter and collar (that
the pet wears), and a thin gauge wire which you can use to
"build" any sort of "fence" up to 25 acres. When your pet
wanders close to the boundary, a warning sound goes off, and if
they try to cross the underground wire boundary, they will
receive a shock (it is not harmful to your pet; the shock is
only slightly stronger than a typical static electricity shock
you get from shuffling across your carpet). Electric pet
containment fencing is a good way to teach your pets not to
wander into other people's yards.
If you are interested in installing a wireless pet fence, you
can get pretty good deals online, for example the Smartdog Basic
Plus In-Ground Pet Fence is less than $200 from Smarthome.com.
If you are a horse-owner, you may also be interested in this
article: How Electric Fences Work. It deals specifically with
electric fences and horses.