INVITES EXPRESSION OF INTEREST FOR “DESIGN, ENGINEERING, SUPPLY & PROCUREMENT, ERECTION, TESTING, COMMISSIONING AND COMPREHENSIVE OPERATION & MAINTENANCE FOR 5 ( FIVE ) YEARS FOR 2 KW, 3 KW, 5 KW, 10 KW GRID CONNECTED SMALL WIND TURBINES POWER PROJECT ON ROOFTOP OF GSECL BUILDINGS IN GUJARAT STATE”,