Possible Clues:

• A lot coming with commercial storage unit
• Unit in electromagnetism
• Electrical unit named for an English physicist
• Storage unit for physicists
• Derived SI unit of electrical capacitance
• Measure of electrical storage capacity
• Fine little source of heat, a fitted electrical unit
• Measure associated with Leyden jars
• Supercapacitor unit
• Much beside plug in electrical unit