The government’s aim of 100,000 MW solar power generation by 2022 hinges on the success of 33 solar energy parks with 19,900 MW capacity being planned across 21 states.Till recently, the upcoming 750 MW park at Rewa in Madhya Pradesh was being touted as the biggest in the world. Now, say officials, Karnataka would have the biggest one, with 2,000 MW capacity being planned at Pavagada in Tumakuru (earlier Tumkur) district. Some 3,000 MW of solar park capacity has been implemented or is in the process of being tendered.The term describes an area earmarked for development of solar power generation projects. It is generally expected to offer 500 Mw and above in capacity; officials said hilly states have been allowed to set up smaller parks, since getting contiguous land is a problem there.The solar park is a novel concept out of India. It can be replicated elsewhere through the International Solar Alliance,” said Ashvini Kumar, managing director, Solar Energy Corporation of India (SECI). It is the Union government’s nodal agency for developing this form of energy.He says these are being set up under four models. One, the state government declares a designated agency for implementation. Two, a project is done in a joint venture with SECI. Three, implemented entirely by SECI. Four, states join hands with private developers.