This a study that makes certain assumptions about usage and capacity and draws conclusions of the realities of what that market will look like into the future. This one is labeled the "Study Scenario' and is paired with the Central Study Scenario' and the 'Baseline Scenario', all of which make differing assumptions about what direction the Wind generation market will become over the next 40 years.
This study assumes significant investment and growth specifically in GW expansion, breaking down costs, difficulties, consequences and lots of other details. The crux of the study comes at ES.2-3 where it shows, in years where there is no Wind power subsidy from the federal government, there is no expansion of generation.
From the Article: ES.5.1 The Opportunity: The Wind Vision analysis modeled a future Study Scenario (with various sensitivities) in which 10% of the nation’s electricity demand is met by wind power in 2020, 20% by 2030, and 35% by 2050.
ES.4.2 Risk of Inaction: Without actions to improve wind’s competitive position in the market, such as those described in the roadmap, the nation risks losing its existing wind manufacturing infrastructure and a range of public benefits.
This is an Energy Dept rationalization for increased funding most especially of the Wind Power Production Tax Credit. The most entertaining part is the repeated mentions of the limitations of wind power (low wind regions, distance from power grid, unpredictable output). They have to increase power usage significantly to predict lower prices (because of the largely insurmountable technical issues with Wind) even though electricity usage has declined for 6 years. In short, this is a brochure for the best case scenario for Wind Power if everything goes right. The original studies (this is an executive summary) dont seem to be available.