The new plants will contribute to Iberdrola's rapid expansion across the Iberian peninsula, after the firm secured 149MW of new Portuguese projects last month.
Calls for new rules coincide with news that Australia is guaranteed to meet its 2020 target for large-scale renewables generation thanks to progress in recent years.
Exempting utilities from mandatory procurement under 41-year-old PURPA law risks further harming independent producers and consumers, says PV body as it proposes way forward.
The Victoria government has released new planning guidelines for large-scale solar farms to ease tensions between solar developers and local communities, but they are yet to come into effect.