Richest Asian Gautam Adani on Friday announced a Rs 65,000 crore investment in Rajasthan over the next 5 to 7 years in setting up a mega 10,000 MW solar power capacity, expanding cement plant and upgrading Jaipur airport. The investment by ports-to-energy conglomerate that Gautam Adani heads also spans city gas infrastructure for retailing CNG to automobiles and piped gas to households and industries as well as laying transmission lines to carry renewable power.