our reporter wolf gebhardt went to learn more about combining tourism and climate protection. >> it's an ambitious vision. one of sri lanka's biggest hotel chains wants to cover all of its energy needs with renewables by 2020. jetwing runsns 30 upscale e hos on the island, and welcomes visitors from around theorld. >> no o business can be suststd in the long term, if you d dont look after your people and the planet. their strategy is to install cutting-edge air conditioning systems... >> we can be a role model or we can be a guinea pig. >> just how green is jet wing really smart ? >> we visit the chairman of jetwing at home. hiran cooray is one of the most powerful men in sri lanka's tourism industry. his father herbert set up the company in the 1970s. even back then, the business was envivironmentally minded.. >> my father always believed, when wherever we go and build hotels, we go in as strangers to that area. so for him it was important that we look after that environment and also that the local communities benefitted, from whatever he was doing () the hotel chain is a proper fami