For an industry or science experiment which needs a large burst of power - big enough that the electricity grid can't normally supply it - you'd usually have a

For an industry or science experiment which needs a large burst of power - big enough that the electricity grid can't normally supply it - you'd usually have a large bank of capacitors. You charge those capacitors slowly over time and then discharge all the energy you stored in them quickly. Alternatively, you can tell the grid operator that you're about to draw more power (probably paying them for the privilege), and they can in turn pay some standby generation to turn on at the same time. I don't know whether the Large Hadron Collider needs this. Other than that, electricity is electricity for the most part. It's all run through transformers to have the same voltage and frequency. Some generation sources are also good because you can turn them on and off quickly (dispatchability), or because they help to keep the grid A.C. frequency and voltage stable. Batteries are also great for both of these. Usually the grid operator pays some generators to provide these services.