ABsolutely, go to a shop to buy your electric fence unit. Battery operated is good and they are usually easier when moving around from place to place. Be aware that at some show societies and other horse events/locations electric fencing on its own isn't allowed. Some locations prefer you to use solid steel panels (portable), for holding your horse. You've probably seen floats with these panels mounted on the side of the float.
I have done extensive travelling with horses in the past and found that electric fencing is not always reliable, trees fall on it and down it goes, batteries go flat or connections come loose and horse only takes a few minutes to work out they can push through etc. However it can be done, but do be careful how you set up.
