Types of Power Station

I would like to have descriptions of the way the various type of power station works. Over the next few weeks I will write stuff up here.

In the meantime, there is some information, with a US tint, at "How the Power Distribution Grid Works", How Stuff Works (http://www.howstuffworks.com), by Marshall Brain. BYG Publishing, Inc., 1998.

Coal-fired: Er, burns coal, heats up steam, turns a turbine.
Gas-fired OCGT: Open cycle gas turbine. Somewhat like a jet engine, the combusted gas is what drives the turbine.
Gas-fired CCGT: Combined Cycle Gas Turbine. The exhaust gas of the turbine is used to raise steam, which provides more power via a steam turbine.
Hydro: Water flows downhill, turns a turbine.
Pumped storage: Like other hydro, but there isn't enough water to have it on all the time. However, it can pump water back up when there is spare power around, so that it will be ready when needed. This is useful because it is very difficult to store electricity.
Magnox: Older type of Nuclear power station.
AGR: Advanced Gas-cooled Reactor Nuclear power station. Most new nuclear power stations are of this type.
PWR: Pressurised Water Reactor Nuclear power station. Sizewell B is of this type.