Electricity group Andes Energia announced its Director Alan Stark, who was also Vice-President for Exploration and Production, has resigned from his position at the company to focus on the development of his consultancy business.Nicholas Mallo Huergo, Chairman, said: "We express our gratitude to Alan for his contribution. My board colleagues and I wish him every success in the development of his business and look forward to utilising his services in the future."As of 09:12 the share price remained unchanged at 58.13p.WS