  We analyze how both traditional data center integration and dispatchable load
integration affect power grid efficiency. We use detailed network models,
parallel optimization solvers, and thousands of renewable generation scenarios
to perform our analysis. Our analysis reveals that significant spillage and
stranded power will be observed in power grids as wind power levels are
increased. A counter-intuitive finding is that collocating data centers with
inflexible loads next to wind farms has limited impacts on renewable portfolio
standard (RPS) goals because it provides limited system-level flexibility and
can in fact increase stranded power and fossil-fueled generation. In contrast,
optimally placing data centers that are dispatchable (with flexible loads)
provides system-wide flexibility, reduces stranded power, and improves
efficiency. In short, optimally placed dispatchable computing loads can enable
better scaling to high RPS. We show that these dispatchable computing loads are
powered to 60~80\% of their requested capacity, indicating that there are
significant economic incentives provided by stranded power.
