Cost and Time Estimates
The Reference Design Report estimates the cost of building the ILC, excluding R&D, prototyping, land acquisition, underground easement costs, detectors, contingencies, and inflation, at US$6.75 billion (in 2007 prices). From formal project approval, completion of the accelerator complex and detectors is expected to require seven years. The host country would be required to pay $1.8 billion for site-specific costs like digging tunnels and shafts and supplying water and electricity.
U.S. Secretary of Energy Steven Chu estimates the total cost to be US$25 billion. ILC Director Barish says this is likely to be an overestimate. Other Department of Energy officials have estimated a $20 billion total.
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