By May 2009, Silverstein wanted the PANYNJ to fund the construction of 2 and 4 WTC, but the PANYNJ was only willing to provide funding for 4 WTC, citing the Great Recession and disagreements with Silverstein. At the time, the PANYNJ had leased one-third of 4 WTC's office space, but no tenant had been signed for 2 WTC. Silverstein also held an option to lease space to the city government for , but he was reluctant to exercise the option, since he believed that market-rate rents for the space would increase drastically when the building opened. Silverstein expressed confidence that the building would attract financial tenants since it was close to Wall Street. Three PureCell fuel cells were delivered at the World Trade Center site in November 2010, providing about 30 percent of 4 WTC's power. By the end of that year, the building had reached the tenth story; the project to date had been funded entirely by insurance proceeds.
