For most of us, transmitting power is an invisible part of modern life. You flick the switch and the light goes on.
But the way we transport electricity is vital. For us to quit fossil fuels, we will need a better grid, connecting renewable energy in the regions with cities.
Electricity grids are big, complex systems. Building new high-voltage transmission lines often spurs backlash from communities worried about the visual impact of the towers. And our 20th century grid loses around 10% of the power generated as heat.
One solution? Use superconducting cables for key sections of the grid. A single 17-centimetre cable can carry the entire output of several nuclear plants. Cities and regions around the world have done this to cut emissions, increase efficiency, protect key infrastructure against disasters and run powerlines underground. As Australia prepares to modernise its grid, it should follow suit. It’s a once-in-a-generation opportunity.
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