China Renewable Energy Program of the EF organized a training seminar on cost calculation method on ancillary services for accommodating large scale RE on April 29, 2011. Mr. Kevin Porter and Mr. Andrew Mills who are the consultants on renewable energy to the Center for Resource Solutions (CRS) gave presentations at the seminar to introduce the study method and US practice in the area. The 3 presentations are now available on the Energy Foundation website for download.