The world's largest solar park set up at an investment of Rs.16,500 crore at Pavagada in Karnataka's Tumakuru district was launched by Chief Minister Siddaramaiah today. The 2,000 MW park, named as 'Shakti Sthala', spans across 13,000 acres spread over five villages and is a benchmark in the unique people's participation in power model put on ground, according to officials.