how can i create a power plant system

i am working on a race that will get power plants and buildings that require power. the problem is that i dont know how to create it so i need help.

Oh that's easy just do this.

seems that your post was incomplete. if you tried to post a link it didnt work.

Oh sorry, I bet that's really frustrating!

On the facts provided here, I suggest you alter your current approach to include other relevant factors in the process in the making a power plant.

if it is more information you want then that is what you will get. think command and conquer.(a power bar that measures all power and that fills for each power plant built. it also changes color as power is being used.) i want to create that in warcraft 3 but gold,lumber,food and mana is in use.

Aww, but food would be so useful for this! Can't you do something else with the food you're using?

all races is using food so the power bar will have to be in addition to that.(shown to all races.) i am open for other suggestions though.

You could use a multiboard to display the power, this way you could use an actual bar for it. You'd then need to trigger all the effects that power has, I'm not sure what those are.

in command and conquer it works like this: when the power is low the defenses dont work while units are produced more slowly. the minimap also stops working in some.

Some of those effects may be tricky to reproduce. I suppose slower unit production could be achieved by periodically applying the freezing breath buff on unit producing buildings by using dummy attackers. I can't really think of a way to turn off the minimap, though.

the most important is to disable defenses so lets focus on figuring out that and how to create the power bar.

And that means?

when the power is low i need all defensive buildings to stop working. i also need something that slows production but that can be dealt with later. i want the power bar at the top of the lower part of the interface.

You could stun them, that'd stop attacking.