I'd get rid of your Tesla Module for right now. See if you can create a "Hide" Module that will temporarily get rid of modules, and then you can call them back using one of your existing modules.
You don't create modules silly, you find or buy them. There might be a way to craft them at a special workshop, but for you there's no crafting. I think what you mean is to cut power, so we'll have +2kW (that's the number in parenths next to the energy). One watt (W) is equal to one joule (J) per second. The k just means 1000. For the record, one AA battery holds about 10kJ, so our storage system isn't very good but it doesn't need to be as long as our power is equal or greater than our cosumption, so we will never drain power.