The process of putting on a quality techno live PA is a very difficult skill to master. Typically the artist does not have a microphone or a guitar with which to act flamboyantly, and he/she/they subsequently has/have a problem with stage presence and artistic integrity.
There are varied effective ways to overcome this. You may want to use a combination of them. Keep in mind that none of these can really substitute for rocking the party til the sun comes up. Or until it goes down if you're playing at a day party. You know, like The Advent. (He just stands behind his equipment, plays his music and smokes cigarettes in case you were wondering)
Eye candy - Underworld and Tool (yeah, they're not a techno group, but they stand still on stage) both have their own specific "look": Underworld with the animated stylings of Tomato, and Tool from their members that used to work in the special effect industry. If you distract the audience with enough pretty pictures, they will not be bothered by you standing still. Alternatively, have a pretty girl sing along. It works for BT.
Costumes and props - If you've never seen the Orbital minipop, here's a little description. It is a black square, with two pairs of white dots bouncing around. If you've never seen Orbital live, here's why that's important. Orbital are mostly invisible during their live performances. They have pretty pictures and lights all over the place to distract the audience, but the stage is kept dark. This gives them a problem with vision, so they constructed headsets with tiny flashlights. (They also have a row of little cows on their mixing board.) Underground Resistance, Scan 7, and Ultradyne and errr Slipknot but I'll bet they got the idea from UR, yeah put on anonymous shows with gas masks, ski masks, bandanas covering faces, and scary makeup. Dopplereffekt don scientist uniforms. Even standing still looks cool when you're dressed up like a sound terrorist.
Play a weird instrument - Aaron Spectre looks like your average nerdy goth kid, but he plays a hammered dulcimer on stage. How many people play drum and bass and darkwave with a hammered dulcimer on stage?
Play an instrument, and act silly - Underworld's Karl Hyde plays guitar. He uses it to make noises and to control drum machines which in turn make noises. He also dances around like a nutter when he's not playing, accepting snow globes from dirtylist members and wearing them like a hat for a while before putting them on top of his equipment rack.
Don't drop heavy things on the audience because you drank too much - The Crystal Method did this once. I've avoided them since. However, the existence of Genitorturers fans may prove me wrong.
Play live - No tapes. No CDs. No Minidiscs. No DAT. Unless you're using them for sample playback or recording, they are against the rules.