Can have some great fun with capacitors, Charge one up, the get the unsuspecting victim to hold both terminals!. Beyond that, it will likely be 20 years before they get one to hold a charge for more than a few min, In the meantime, the lights will be out because the only reliable source of power in the UK will have been shut down by Green Taxation.
As of NOW. 64% is coming from Gas, (Most of which comes down the pipeline from Russia!) 16% from Coal 13% from wind, and 4% from France!.
"YOUR" Energy security is in the hands of the Old Soviets.