I am was reading some answers on whether capacitors store charge (which they don't, as far as I know), on this website, and then one response got me thinking:
There are some ways to store or accumulate static electric charge. A Van de Graaff generator is a device that accumulates electric charge. This can actually store a net charge. This device stores excess charge with respect to ground and touching it makes your hair stand up.
Still, this device with respect to itself should be neutral and so stores no net charge, so my question is, does Van de Graaff generator really store charge, or is it like a capacitor?