The Australian Renewable Energy Agency (ARENA) this week released an update to its Ultra Low Cost Solar White Paper, saying that ultra low-cost solar is within reach, but could slip away without a change in how Australia delivers utility-scale solar projects.

The quest for ultra-low cost solar is now far more dependent on cheaper construction methods and system integration rather than lower-priced cells and modules.

The speed and scale of delivering large solar projects is now the key risk to reaching Australia’s ambitions for ultra low-cost solar, according to a white paper from the…