WAYNE, N.J. — Toys"R"Us is installing the largest rooftop solar power installation in North America at its distribution center in Flanders, N.J. Staging for the system is currently underway and construction will conclude this summer. Upon completion, the 5.38 megawatt on-site solar array will occupy 869,294 sq. ft. It is estimated to generate 72% of the electrical needs for the Toys"R"Us facility, which is the largest of the chain’s 10 DCs and covers over 1.5 million sq. ft., in addition to the roof, which spans 32 acres.