The Big Move was to be accompanied by an investment strategy, in order to ensure that capital costs for the GTHA's regional transportation system were funded in a sustainable way. This would require the generation of $50 billion for all of the identified projects, which equated to $2 billion annually for 25 years. While the RTP outlined the preliminary requirements, an Investment Strategy would be crafted in more detail in separate cover. Metrolinx was given until June 2013 to draft such a strategy.