How big do you want your power grid?

Earlier this year the green light was given to what will eventually be the world’s largest solar farm. There are regulatory and funding obstacles to overcome yet, but if all goes to plan the Sun Cable project will see 10 gigawatts of solar panels installed in the Australian desert.

To put that in context, Britain’s Hinkley Point C nuclear reactor will deliver 3.2 GW of power when/if it comes online in 2025. So this would be three times the capacity of Hinkley, even though it will cost less t...