The States provide data on solar resources and grid...

The States provide data on solar resources and grid infrastructure. 5 MWac projects are guaranteed connection to the grid and the grid will purchase the project's full electricity output (ie. no curtailment). With the low equipment costs these days, margins in the sector are no longer razor thin - such that the economics work even without a feed-in tariff. An equity IRR of 10% across a portfolio of 5 MWac projects (with gearing of 50%) is a comfortable assumption in my view. (I have worked on the financier side of financing solar PV projects years ago in various jurisdictions). All IMO and GLTAH.