I'm working an electricity broking desk at a finance firm this summer, and was hoping someone could clarify the science of it all for me. -For example, a plant has 350MW of capacity. Say 350MWh are demanded for a one hour period. Assuming this plant bids successfully to supply the full amount, does this mean it simply needs to run at full capacity for an hour? -Looking at transmission lines, they are listed in terms of kV. For example, one is listed as being 350kV HVDC. But after Googling kV to MW, 1MW is 1000kV amperes. I don't understand this at all, surely that woud mean you'd need thousands of transmission lines to transport a very small load of electricity (say 100MW)? -Lastly, what is the difference between HVDC and AC in terms of transmission capabilities? Thank you!