Electricity: levelling the renewables playing field

GONE ARE THE DAYS WHEN GENERATING RENEWABLE ELECTRICITY WAS SOMETHING OF A COTTAGE INDUSTRY - 100GW+ OF INSTALLED WIND CAPACITY WORLDWIDE PROVES THIS. A PARADIGM SHIFT HAS OCCURRED, LEADING TO A GREATER CHALLENGE; WHAT DOES AN ELECTRICITY STRUCTURE WHICH SEAMLESSLY INCORPORATES MULTIPLE SOURCES OF GENERATING TECHNOLOGY LOOK LIKE, AND CRUCIALLY HOW CAN IT BE ACHIEVED? POLLY HIGGINS LOOKS AT LIBERALISATION, LONG DISTANCE TRANSMISSION, HVDC AND SUPERGRIDS.