In May 2004, the Nuclear Regulatory Authority allowed the Pakistan Atomic Energy Commission to sign the contract with the China National Nuclear Corporation (CNNC) to start the work on the second reactor, "CHASNUPP-II", which would be modeled as similar to "CHASNUPP-I" design. The construction of the second unit start on 27 December 2005 and achieved its critical phase on 21 February 2011. The "CHASNUPP-II"joined the nation's electricity grid system on 13 March 2011 and commenced its official operations on 17 May 2011. The second unit is also a CNP-300 reactor with nominal difference of generating a gross electrical capacity of 325 MWe with a net output of about 300 MW. The reactor was designed and built in Pakistan with local industry's participation. Pakistani administration eventually financed the commercial nuclear power plant for industrial usage and reportedly contracted Chinese National Nuclear Corp. for overseeing the second unit to be installed, which was officially inaugurated on 10 May 2011 by former Prime Minister Yousaf Raza Gillani. The Pakistani government provided finance of US$860 Mn, with Chinese banks loaning the nation US$ 350 Mn.