Though lead acid batteries is not our first choice in storage due to polluting and maintenance issues, this is an excellent research paper. Which shows the benefits of storage and the DC bus in terms many engineers will be comfortable with.
This is a historical reference, the battery in its update form is a excellent solution and a green one too.
The Desertec Concept
Sustainable electricity and water for Europe Middle East and North Africa
A excellent research document, though there are considerably more options now available that are best suited to a specific environmental conditions with the advent of viable stationary power storage systems.
Electrical Storage
Making large scale adoption of wind and solar projects a reality
This is a summarization of storage and the relative costs. However in this study Stationary Battery storage research is limited. The market is quite dynamic and many new advancements are achieving commercialization in stationary storage that are not included.
US wind integration report 062509
A review of large-scale wind grid integration in the United States
Prepared by five wind energy experts, this paper examines and summarizes wind integration experience in the United States. U.S. wind capacity has nearly tripled since 2005, and the wind power integration issue is attracting increasing attention. The paper begins with a description of time scales of grid operation; discusses estimated grid impacts based on wind integration studies and operating experience; summarizes estimated wind integration costs; considers literature on how to determine the capacity value of wind; describes potential solutions and means of accommodating higher levels of wind power; discusses recent grid outages involving wind power; and closes with a summary.
